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ADS1174EVM TI1 | Alldatasheet

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User's Guide SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Figure ADS1274EVM (Left) and ADS1274EVM-PDK (Right) This user's guide describes the characteristics, operation, and use of the ADS1174EVM and ADS1274EVM, both by themselves and as part of the ADS1174EVM-PDK or ADS1274EVM-PDK. These evaluation modules (EVMs) are evaluation boards for the ADS1274 a 24-bit multi-channel, delta-sigma analog-to-digital converter (ADC), and the ADS1174 a 16-bit version of the ADS1274. The EVM allows evaluation of all aspects of the ADS1174 or ADS1274 devices. Complete circuit descriptions, schematic diagrams, and bills of material are included in this document. The following related documents are available through the Texas Instruments web site at www.ti.com EVM-Compatible Device Data Sheets Device Literature Number Device Literature Number ADS1274 SBAS367B OPA1632 SBOS286A ADS1174 SBAS373A SN74LVC2G157 SCES207K REF5025 SBOS410 TPS73018 SBVS054H REF3125 SBVS046C TPS65131 SLVS493B OPA2350 SBOS099C PCA9535 SCPS129H ADCPro is a trademark of Texas Instruments. Microsoft, Windows are registered trademarks of Microsoft Corporation. SPI is a trademark of Motorola. I C is a trademark of NXP Semiconductors. NI-VISA is a trademark of National Instruments. All other trademarks are the property of their respective owners. SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

1.1

Features

1.2 Introduction www.ti.com EVM Overview ADS1174EVM/ADS1274EVM Bill of Materials ADS1174EVM/ADS1274EVM Features: Contains all support circuitry needed for the ADS1174/ADS1274 +10V and 10V generated from the +5V supply or supplied externally Voltage reference options: external or onboard Clock options: External clock source or 27MHz onboard crystal oscillator GPIO access Compatible with the TI Modular EVM System ADS1174EVM-PDK/ADS1274EVM-PDK Features: Easy-to-use evaluation software for Microsoft Windows XP Data collection to text files Built-in analysis tools including scope, FFT, and histogram displays Complete control of board settings Easily expandable with new analysis plug-in tools from Texas Instruments For use with a computer, the ADS1174EVM-PDK or ADS1274EVM-PDK is available. This kit combines the ADS1174EVM/ADS1274EVM board with the DSP-based MMB0 motherboard, and includes ADCPro software for evaluation. The MMB0 motherboard allows the ADS1174EVM/ADS1274EVM to be connected to the computer via an available USB port. This manual shows how to use the MMB0 as part of the ADS1174EVM-PDK/ADS1274EVM-PDK, but does not provide technical details about the MMB0 itself. ADCPro is a program for collecting, recording, and analyzing data from ADC evaluation boards. It is based on a number of plug-in programs, so it can be expanded easily with new test and data collection plug-ins. The ADS1174EVM-PDK/ADS1274EVM-PDK is controlled by a plug-in running in ADCPro. For more information about ADCPro, see the ADCPro Analog-to-Digital Converter Evaluation Software User's Guide (literature number SBAU128 available for download from the TI web site. This manual covers the operation of both the ADS1174EVM/ADS1274EVM and the ADS1174EVM-PDK/ADS1274EVM-PDK. Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with the ADS1174EVM and the ADS1274EVM. For clarity of reading, the remainder of this manual will refer only to the ADS1274EVM or ADS1274EVM-PDK, but operation of the EVM and kit for the ADS1174 is identical, unless otherwise noted. The ADS1274EVM is an evaluation module built to the TI Modular EVM System specification. It can be connected to any modular EVM system interface card. The ADS1274EVM is available as a stand-alone printed circuit board (PCB) or as part of the ADS1274EVM-PDK, which includes an MMB0 motherboard and related software. As a stand-alone PCB, the ADS1274EVM is useful for prototyping designs and firmware. Note that the ADS1274EVM has no microprocessor and cannot run software. To connect it to a computer, some type of interface is required. SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

3.1 Serial Data Interface Analog Interface www.ti.com For maximum flexibility, the ADS1274EVM is designed for easy interfacing to multiple analog sources. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin, dual-row, header/socket combination at J9. This header/socket provides access to the analog input pins of the ADS1274. Consult Samtec at http://www.samtec.com or call 1-800-SAMTEC-9 for a variety of mating connector options. These signals can also be connected to the terminal block J7. Most of the pins on and are directly connected, with no filtering or protection. Use appropriate caution when handling these pins. Table summarizes the pinouts for analog interfaces and J7. Table J9/J7:Analog Interface Pinout Pin Number Signal

Description

J9.1, J7-2 A1N AINN1, ADS1274 J9.2, J7-3 A1P AINP1, ADS1274 J9.3, J7-4 A2N AINN2, ADS1274 J9.4, J7-5 A2P AINP2, ADS1274 J9.5, J7-6 A3N AINN3, ADS1274 J9.6, J7-7 A3P AINP3, ADS1274 J9.7, J7-8 A4N AINN4, ADS1274 J9.8, J7-9 A4P AINP4, ADS1274 J9.18 EXTREFN External Reference source input side of differential input) J9.20 EXTREFP External Reference source input side of differential input) J9.10-16 (even) Unused J9.15 Unused J9.9-19 (odd), J7-1 AGND Analog ground connections (except J1.15) The ADS1274EVM is designed to easily interface with multiple control platforms. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin, dual-row, header/socket combination at J5. This header/socket provides access to the digital control and serial data pins of the ADC. Consult Samtec at http://www.samtec.com or call 1-800-SAMTEC-9 for a variety of mating connector options. All logic levels on are 3.3V CMOS, except for the I C pins. These pins conform to 3.3V I C rules. Table describes the serial interface pins. Table J5: Serial Interface Pins Pin No. Pin Name Signal Name I/O Type Pullup Function J5.1 CNTL SYNC In High J5.2 GPIO0 MODE0 In High J5.3 CLKX SCLK In None ADS1274 SPI clock J5.4 DGND DGND In/Out None Digital Ground J5.5 CLKR CLKR Out None SCLK clock J5.6 GPIO1 MODE1 In High J5.7 FSX /DRDY/FSYNC In/Out Low J5.8 GPIO2 FORMAT0 In High ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

3.2 Data Output www.ti.com Digital Interface Table J5: Serial Interface Pins (continued) Pin No. Pin Name Signal Name I/O Type Pullup Function J5.9 FSR /DRDY/FSYNC In/Out None J5.10 DGND DGND In/Out None Digital Ground J5.11 DX DIN In None ADS1274 SPI data in J5.12 GPIO3 FORMAT1 In High J5.13 DR DOUT1 Out None ADS1274 data out J5.14 GPIO4 FORMAT2 In None J5.15 /INT /DRDY/FSYNC Out None J5.16 SCL SCL I C n/a I C clock J5.17 TOUT CLK In None Can be used to provide a clock from a processor J5.18 DGND DGND In/Out None Digital Ground J5.19 GPIO5 CLK Select None J5.20 SDA SDA I C n/a I C data Many pins on have weak pull-up/pull-down resistors. These resistors provide default settings for many of the control pins. Many pins on correspond directly to ADS1274 pins. See the ADS1274 product data sheet for complete details on these pins. Most data communications are directed through DOUT1. The data from all eight channels can be observed on the DOUT1 pin using the TDM mode. That is the signal used by the ADS1274EVM-PDK to read back and display all the channels. All the data output signals (DOUT1 to DOUT4) can be monitored on J2. Figure illustrates the pinout for J2. Figure Connector SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

4.1 Bipolar Power Options Power Supplies www.ti.com is the power-supply input connector. Table lists the configuration details for J3. Analog inputs to the ADC can be applied directly to the device (see Section 8.1 Analog Input bypassing the onboard amplifiers, and in this case only +5V and +3.3V are required to power the EVM. If the amplifiers are used, an additional bipolar supply is needed to power them. The EVM includes a switching power supply to generate a +10V and 10V supply. For optimum noise performance, the external supplies (+VA and VA) should be used. Table Configuration: Power-Supply Input Pin No. Pin Name Function Required J3.1 +VA +10V to +15V Yes, unless onboard +10V is used. J3.2 VA 10V to 15V Yes, unless onboard 10V is used. J3.3 +5VA +5V analog supply Always J3.4 5VA analog supply No J3.5 DGND Digital ground input Yes J3.6 AGND Analog ground input Yes J3.7 +1.8VD 1.8V digital supply No J3.8 +3.3VD 3.3V digital supply Always J3.9 VD1 Not used No J3.10 +5VD +5V Used to generate +10V/ 10V The 1.8V for DVDD comes from the voltage regulator U16 using 3.3V as the source voltage input. All of the power supplies AVDD (+5V), DVDD (1.8V), and IOVDD (3.3V) have corresponding jumpers J10, J11(AVDD), J13(DVDD) and J14(IOVDD) that can be replaced with a current meter to measure the respective supply currents. J15 and J16 require a jumper to select the voltage used by the onboard amplifiers. The external voltages can range from 10V to 15V. The onboard voltage is always 10V. Table and Table list the options for J15 and J16, respectively. Figure shows the pinout for connectors J15 and J16. Table J15 +10V Selection Jumper Name Function 1-2 (OB) +10V Select the +10V that is generated on the EVM 2-3 (EXT) +VA Select the external +VA voltage Table J16 10V Selection Jumper Name Function 1-2 10V Select the 10V that is generated on the EVM 2-3 VA Select the external VA voltage ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

www.ti.com Voltage Reference Figure Connectors J15, J16 The ADS1274EVM has three sources for the reference voltage. Jumper can select the voltage from either the REF3125(U1) or REF5025(U2). The reference from either source is filtered and buffered by U3A. Switch chooses either the onboard reference or the external reference voltage that is connected to the reference pins of J9. Figure illustrates the pinout for connector J1. Figure shows switch as it appears on the EVM. Figure Connector Figure Switch SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

Power-Down, Mode and Format Control Clock Source 7.1 Usage in PDK 7.2 Usage as a Stand-Alone EVM Power-Down, Mode and Format Control www.ti.com The ADS1274 has several pins to control power-down of individual channels, and mode and format for the digital interface. These pins are controlled on the EVM either through software or hardware (using switches S10 and S11). For users of the ADS1274EVM as a stand-alone module, these pins may be pulled high or low through DIP switches S10 and S11. Refer to the ADS1274 product data sheet for complete details on these pins and which state sets which options. For use in the ADS1274EVM-PDK, the state of these pins is controlled by software, using the I C port expander on the EVM. When used in the ADS1274EVM-PDK, DIP switches S10 and S11 must all be switched so that they are down, toward the center of the board. The ADS1274EVM-PDK software will check at startup to verify that these switches are set correctly, and will generate an error message if they are not. However, it cannot detect if the switches are changed after startup. CAUTION When using the EVM as part of the ADS1274EVM-PDK, DIP switches S10 and S11 must all be switched so that they are down, toward the center of the board. Failure to do so may damage the EVM. The ADS1274 clock can come from one of several sources: the onboard 27MHz crystal oscillator, a clock supplied by a processor on the TOUT pin (J5.17), or an external clock source connected to J18.1 (ground) and J18.2 (signal). If the onboard 27MHz oscillator is selected, the device can be run in the high-speed mode, the high-resolution mode, the low-power mode, or low-speed mode with CLKDIV set to If the performance of the device must be explored with CLKDIV set to in the low-power and low-speed modes, an external clock must be provided to the board, either using the TOUT connection or having an external clock source connected to J18. The same is true if frequencies other than the 27MHz provided by the onboard oscillator must be investigated. If using the ADS1274EVM as part of the ADS1274EVM-PDK, J19 should not have any pins shorted. Remove any shorting blocks on jumper J19. The ADS1274EVM-PDK software will allow selection of the clock source under software control (this option is accomplished by using port of the I C expander U17). The software allows selection of the onboard 27MHz oscillator, or a clock provided by a PLL on the MMB0 which directly drives the appropriate CLK pins of the interface, or an external, customer supplied clock. If an external clock is selected with the software, this clock must be provided on J18. Note that if the external clock is selected and no clock is provided, the software may hang waiting for data from the converter. If using the EVM in your own system and not with the PDK hardware and software, observe the following recommendations: J17 should be removed if the external clock source is used and the TOUT pin is still driven by a processor in order to avoid conflicts. Jumper J19 can be used to always select the 27MHz crystal (IOVDD position) or allow the onboard/external clock selection to be controlled by GPIO5 (J5.19) as shown in Figure ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

8.1 Analog Input www.ti.com EVM Operation Figure Jumper J19 The following section provides information on the analog input, digital control, and general operating conditions of the ADS1274EVM. The analog input sources (channels 1-4) can be applied directly to (top or bottom side) or through signal-conditioning modules available for the the modular EVM system. Terminal block is connected in parallel with the analog signal connections to J9. Each input signal can be selected to connect directly to the analog inputs of the ADS1274 or they can use the OPA1632 buffers that are provided. Switches S2-5 can be switched away from the ADS1274 to select the Terminal Block (TBK) or towards the ADS1274 to select the Amplifier (AMP) for the analog inputs through as shown in Figure Figure Amplifier Selection Switches SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

8.2 Digital Control 8.3 ADS1274EVM-PDK Power Supply EVM Operation www.ti.com The digital control signals can be applied directly to (top or bottom side). The modular ADS1274EVM can also be connected directly to a DSP or microcontroller interface board, such as the 5-6KINTERFACE or HPA-MCUINTERFACE boards available from Texas Instruments, or the MMB0 if purchased as part of the ADS1274EVM-PDK. For a list of compatible interface and/or accessory boards for the EVM or the ADS1274, see the relevant product folder on the TI web site. Some of the digital signals are controlled directly with pins on J5. Other signals such as the Power Down controls can only be controlled with slide switches or by U17 and U18 that are set up and read using the I C signals on pins and of J5. The Format and Mode pins can be controlled by all three methods (slide switches, GPIO pins on J5, and the I C control from U17). The ADS1274 allows the serial interface to be used in two different formats: an SPI-compatible mode and a frame-sync format. Switch S12 can be used to switch between these two formats. The left position, marked SPI selects the SPI format. In this format, the signals are connected in this configuration: The SCLK input of the converter is driven by the serial port signal CLKX, pin J5.3. The signal from the selected source for the clock (see Section Clock Source is connected to the CLKR pin (J5.5) allowing the serial port of a processor to be synchronized to the converter master clock. The signal from the selected clock source is routed to the CLK input of the converter. Port P10 of the I C port expander U18 is connected to a logic high level, so that the position of switch S12 can be read back by software. The right position of S12, marked FS selects the frame-sync format. In this format, the signals are connected in this configuration: The SCLK input of the converter is driven by the serial port signal CLKR, pin J5.5. The signal from the selected clock source is connected to the CLKX pin (J5.3), allowing the serial port of a processor to be synchronized to the converter master clock. The CLK input of the converter is driven by the CLKR signal (J5.5). This connection ensures that the CLK and SCLK signals have the same phase and the correct ratio as outlined in the data sheet of the device. Port P10 of the I C port expander U18 is connected to a logic low level, so that the position of switch S12 can be read back by software. For use in the ADS1274EVM-PDK, S12 must be in the right (FS) position, which is the default factory setting. Switching to SPI format will allow the EVM to connect to any SPI-compatible processor that does not support the frame-sync mode. If this format is selected, keep in mind that the high-speed mode will not work at full speed (32.768MHz) because of the limitations outlined in the device product data sheet. The ADS1274EVM can either be powered by an AC adapter or by applying the 5V, +10V and 10V to the connectors on the MMB0 board. The MMB0 board will provide the and 3.3V to the ADS1274EVM along with the +10V and 10V signals. Because the circuitry is provided on the ADS1274EVM to generate +10V and 10V, the complete system can be powered from the supplied AC adapter that supplies +6V and 3A. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

8.4 Default Jumper Settings and Switch Positions www.ti.com EVM Operation Figure shows the jumpers found on the EVM and the respective factory default conditions for each. Figure ADS1274EVM Default Jumper Locations Table lists the switches found on the EVM and the respective factory default conditions for each. Table List of Switches Switch Default Position Switch A IN Terminal Block (amplifiers bypassed) Down A IN Terminal Block (amplifiers bypassed) S12 Right Frame-sync format SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

9.1 Installing the ADCPro Software ADS1274EVM-PDK Kit Operation www.ti.com This section provides information on using the ADS1274EVM-PDK, including setup, program installation, and program usage. To prepare to evaluate the ADS1274 with the ADS1274EVM-PDK, complete the following steps: Step Install the ADCPro software (if not already installed) on a PC. Step Install the ADS1274EVM-PDK EVM plug-in software. Step Set up the ADS1274EVM-PDK. Step Connect a proper power supply or use the included AC adapter. Step Complete the NI-VISA USB driver installation process. Step Run the ADCPro software. Step Complete the Microsoft Windows USB driver installation process. Each task is described in the subsequent sections of this document. CAUTION Do not connect the ADS1274EVM-PDK before installing the software on a suitable PC. Failure to observe this caution may cause Microsoft Windows to not recognize the ADS1274EVM-PDK. The latest software is available from the TI website at www.ti.com/ The CD-ROM shipped with the ADS1274EVM may not contain the latest software, but the ADCPro installer will check for updates when executed (if connected to the Internet), and then give you the option of downloading and installing the latest version. Refer to the ADCPro User Guide for instructions on installing and using ADCPro. To install the ADS1274EVM-PDK plug-in, run the file: ads1274evm-pdk-plugin-1.0.0.exe 1.0.0 is the version number, and increments with software version releases: you may have a different version on your CD). Double-click the file to run it; then follow the instructions shown. You can also utilize the ADCPro Update Check feature to check for newer versions of the ADS1274EVM-PDK plug-in, once you have installed one version of it. The software should now be installed, but the USB drivers may not yet have been loaded by the PC operating system. This step will complete when the ADCPro software is executed; see Section 9.4 Running the Software and Completing Driver Installation ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

9.2 Setting Up the ADS1274EVM-PDK www.ti.com ADS1274EVM-PDK Kit Operation The ADS1274EVM-PDK contains both the ADS1274EVM and the MMB0 motherboard; however, the devices are shipped unconnected. Follow these steps to set up the ADS1274EVM-PDK. Step Unpack the ADS1274EVM-PDK kit. Step Set the jumpers and switches on the MMB0 as shown in Figure Set the Boot Mode switch to USB. Connect +5V and +5VA on jumper block J13 (if +5V is supplied from J14 +5VA). Leave +5V and +VA disconnected on jumper block J13. If the PDK will be powered from an AC adapter, connect J12. If the PDK will be powered through the terminal block, disconnect J12. (See Section 9.3 for details on connecting the power supply.) Figure MMB0 Initial Setup SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

www.ti.com space Step Plug the ADS1274EVM into the MMB0 as Figure illustrates. Figure 10. Connecting ADS1274EVM to MMB0 CAUTION Do not misalign the pins when plugging the ADS1274EVM into the MMB0. Check the pin alignment carefully before applying power to the PDK. Step Set the jumpers and switches on the ADS1274EVM as shown in Figure (note that these settings are the factory-configured settings for the EVM). Note that the default configuration for the EVM is to use external 10V supplies for the input amplifiers. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

9.2.1 About the MMB0 9.3 Connecting the Power Supply 9.3.1 Connecting an AC Adapter www.ti.com ADS1274EVM-PDK Kit Operation The MMB0 is a Modular EVM System motherboard. It is designed around the TMS320VC5507 a DSP with an onboard USB interface from Texas Instruments. The MMB0 also has 16MB of SDRAM installed. The MMB0 is not sold as a DSP development board, and it is not available separately. TI cannot offer support for the MMB0 except as part of an EVM kit. For schematics or other information about the MMB0, contact Texas Instruments. The ADS1274EVM-PDK can be operated with a unipolar +5V supply or a combination of +5V and bipolar (10V to 15V) supply. When the MMB0 DSP is powered properly, LED glows green. The green light indicates that the 3.3V supply for the MMB0 is operating properly. (It does not indicate that the EVM power supplies are operating properly.) An AC adapter can be connected to barrel jack on the MMB0. is located next to the USB connector. The adapter must output to dc. The connector must be sleeve-negative, tip-positive. It should have a current rating of at least 2A. Jumper J12 on the MMB0 connects a wall-mounted power supply to the board. To use the wall-mount supply, J12 must be shorted. Figure illustrates how to connect an AC adapter to the MMB0. Figure 11. Connecting an AC Adapter SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

9.3.2 Connecting a Laboratory Power Supply 9.4 Running the Software and Completing Driver Installation ADS1274EVM-PDK Kit Operation www.ti.com A laboratory power supply can be connected through terminal block J14 on the MMB0, as shown in Figure Both unipolar and bipolar configurations are supported. To use a unipolar lab power supply configuration: Disconnect J12 on the MMB0. Connect a +5V dc supply to the +5VD terminal on J14. Connect ground of the dc supply to the GND terminal on J14. For bipolar mode, also connect a 10V dc supply to the VA, and +10V on the +VA terminals on J14. It is not necessary to connect a +5V dc supply voltage to the +5VA terminal on J14 if the +5V/+5VA position on J13 is shorted. Figure 12. Laboratory Power-Supply Connection Note: The software is continually under development. These instructions and screen images are current at the time of this writing, but may not exactly match future releases. The program for evaluating the ADS1274EVM-PDK is called ADCPro. This program uses plug-ins to communicate with the EVM. The ADS1274EVM-PDK plug-in is included in the ADS1274EVM-PDK package. The program currently runs only on Microsoft Windows platforms of Windows XP; Windows Vista is NOT supported. If this is the first time installing ADCPro and plug-ins, follow these procedures to run ADCPro and complete the necessary driver installation. Make sure the ADCPro software and device plug-in software are installed from the CD-ROM as described in Section 9.1 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

9.4.1 NI-VISA USB Device Driver Installation www.ti.com ADS1274EVM-PDK Kit Operation After the ADCPro software is installed, apply power to the PDK and connect the board to an available PC USB port. The computer should recognize new hardware and begin installing the drivers for the hardware. Figure through Figure are provided for reference to show the installation steps. For the first screen, Figure it is not necessary to search for the software; it has already been installed to your PC. For the remaining steps, accept the default settings. Figure 13. NI-VISA Driver Installation SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

www.ti.com Figure 14. NI-VISA Driver Installation Question Figure 15. NI-VISA Driver Installing ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

www.ti.com ADS1274EVM-PDK Kit Operation Figure 16. NI-VISA Driver Complete Installation This should complete the installation of the NI-VISA drivers. You can verify proper installation by opening the Device Manager and locating as shown in Figure Figure 17. NI-VISA Driver Verification Using Device Manager SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

9.4.2 USBStyx Driver Installation ADS1274EVM-PDK Kit Operation www.ti.com Step Start the software by selecting ADCPro from the Windows Start menu. The screen in Figure appears. Figure 18. ADCPro Software Start-up Display Window Step Select ADS1274EVM from the EVM drop-down menu. The ADS1274EVM-PDK plug-in appears in the left pane, as shown in Figure ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

www.ti.com ADS1274EVM-PDK Kit Operation Figure 19. ADS1274EVM-PDK Plug-In Display Window Step The ADS1274EVM-PDK plug-in window has a status area at the top of the screen. When the plug-in is first loaded, the plug-in searches for the board. You will see a series of messages in the status area indicating this action. Step If you have not yet loaded the operating system drivers, Windows will display the Windows Install New Driver Wizard sequence (illustrated in Figure through Figure Accept the default settings. Note: During the driver installation, a message may appear indicating the firmware load has TIMED OUT. Click OK and continue driver installation. The plug-in will attempt to download the firmware again once the driver installation completes. SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

www.ti.com Figure 20. Install New Driver Wizard Screen Figure 21. Install New Driver Wizard Screen ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

www.ti.com ADS1274EVM-PDK Kit Operation Figure 22. Install New Driver Wizard Screen Figure 23. Install New Driver Wizard Screen SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

www.ti.com Figure 24. Install New Driver Wizard Screen Step Once Windows finishes installing the software driver, the plug-in downloads the firmware to the MMB0. The status area will display Connected to EVM when the device is connected and ready to use. If the firmware does not load properly, you can try resetting the MMB0 by pressing reset and then reloading the plug-in. Step You can verify the proper installation of the USBStyx driver using the Device Manager. Note that the first driver item, NI-VISA USB Devices, will disappear and a new item, LibUSB-Win32 Devices will appear, as Figure shows. Figure 25. USBSytx Driver Verification Using Device Manager The driver installation wizard sequence should not appear again, unless you connect the board to a different USB port. The evaluation software is based on ADCPro, a program that operates using a variety of plug-ins. (The ADS1274EVM plug-in is installed as described in the installation section, To use ADCPro, load an EVM plug-in and a test plug-in. To load an EVM plug-in, select it from the EVM menu. To load a test plug-in, select it from the Test menu. To unload a plug-in, select the Unload option from the corresponding menu. ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

10.1 Using the ADS1274EVM-PDK Plug-in 10.1.1 Channel Enable Tab www.ti.com Evaluating Performance with the ADCPro Software Only one of each kind of plug-in can be loaded at a time. If you select a different plug-in, the previous plug-in is unloaded. The ADS1274EVM-PDK plug-in for ADCPro provides complete control over all settings of the ADS1274. It consists of a tabbed interface (see Figure with different functions available on different tabs. These controls are described in this section. You can adjust the ADS1274EVM settings when it is not acquiring data. During acquisition, all controls are disabled and settings may not be changed. When you change a setting on the ADS1274EVM plug-in, the setting immediately updates on the board. Settings on the ADS1274EVM correspond to settings described in the ADS1274 product data sheet; see the ADS1274 data sheet for details. Because the effective data rate of the ADS1274 depends upon settings of the Clock Freq and Operating Mode, the Data Rate indicator in the upper right corner of the plug-in interface is always visible and updates whenever a setting changes that affects the data rate. The ADS1274 can acquire from one to four channels simultaneously. The Channel Enable tab (as shown in Figure provides the control to turn each channel on or off. Figure 26. Channel Enable In addition, the Manual Control button (shown in Figure can be used to enable or disable all the channels. Figure 27. Manual Channel Control SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

10.1.2 Settings Tab Evaluating Performance with the ADCPro Software www.ti.com The ADS1274 requires a clock to operate. The maximum frequency is selected for the different operating modes, as shown in Table Table Operating Modes: Clock Frequency Operating Mode CLKDIV Frequency (MHz) High-Speed 32.768 High-Resolution Low-Power Low-Power 13.5 Low-Speed Low-Speed 5.4 If the PLL is selected as the clock source, a frequency can be entered in the Clock Frequency box; the software will find the closest frequency that is possible for the PLL to synthesize (and which is within the maximum allowable frequency for the mode selected) and will set the clock to that frequency, as well as display the actual frequency used in the Clock Frequency box once focus has moved from that control. Figure 28. Clock Settings and Mode The Operating Mode control (illustrated in Figure can select from High-Speed, High-Resolution, Low-Power, or Low-Speed. Figure 29. Operating Mode ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

10.1.3 Collecting Data 10.2 Troubleshooting www.ti.com Evaluating Performance with the ADCPro Software The CLKDIV control can be selected to be or The Data Output Formats are limited to the Frame Sync, TDM Format, but both Dynamic and Fixed Mode can be selected. Figure shows the output data format options. Figure 30. Output Data Format Once you have configured the ADS1274 for your test scenario, press the ADCPro Acquire button to start the collection of the number of datapoints specified in the Test plug-in Block Size control. The ADS1274EVM-PDK plug-in disables all the front panel controls while acquiring, and displays a progress bar as shown in Figure Figure 31. Progress Bar While Collecting Data For more information on testing analog-to-digital converters in general and using ADCPro and Test plug-ins, refer to the ADCPro User Guide If ADCPro stops responding while the ADS1274EVM-PDK is connected, try unplugging the power supply from the PDK. Unload and reload the plug-in before reapplying power to the PDK. SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

11.1 Bill of Materials Schematics and Layout www.ti.com Schematics for the ADS1174EVM and ADS1274EVM are appended to this user's guide. The bill of materials is provided in Table Note: All components should be compliant with the European Union Restriction on Use of Hazardous Substances (RoHS) Directive. Some part numbers may be either leaded or RoHS. Verify that purchased components are RoHS-compliant. (For more information about TI's position on RoHS compliance, see the Texas Instruments web site Table ADS1174EVM/ADS1274EVM Bill of Materials Item No. Qty Value Ref Des R39-R45. R44, Resistor, Thick Film Chip Ω Panasonic ERJ-3GEYJ470V R45 5%, 1/10W, Size 0603 49.9 R36, R46, Resistor, Thick Film Chip 49.9 Ω Panasonic ERJ-3EKF49R9V R56-R69 1%, 1/16W, Size 0603 100 R37 Resistor, Thick Film Chip 100 Ω Panasonic ERJ-3GEYJ101V 5%, 1/10W, Size 0603 R2-R19 Resistor, Thick Film Chip k Ω Panasonic ERJ-3EKF1001V 1%, 1/16W, Size 0603 R38 Resistor, Thick Film Chip k Ω Panasonic ERJ-3GEYJ202V 5%, 1/10W, Size 0603 4.22K R71 Resistor, Thick Film Chip 4.22 k Ω Panasonic ERJ-3EKF4221V 1%, 1/16W, Size 0603 10K R50, R51, R70 Resistor, Thick Film Chip k Ω Panasonic ERJ-3GEYJ103V 5%, 1/10W, Size 0603 47K R47 Resistor, Thick Film Chip k Ω Panasonic ERJ-3GEYJ473V 5%, 1/10W, Size 0603 100K R1,R72 Resistor, Thick Film Chip 100 k Ω Panasonic ERJ-3GEYJ104V 5%, 1/10W, Size 0603 150K R53, R54 Resistor, Thick Film Chip 150 k Ω Panasonic ERJ-3GEYJ154V 5%, 1/10W, Size 0603 470K R48, R49 Resistor, Thick Film Chip 470 k Ω Panasonic ERJ-3GEYJ474V 5%, 1/10W, Size 0603 1.1M R52 Resistor, Thick Film Chip 1.1 M Ω Rohm MCR10EZHF1104 5%, 1/8W, Size 0805 1.24M R55 Resistor, Thick Film Chip 1.24 M Ω Rohm MCR10EZHF1244 5%, 1/8W, Size 0805 100K RA1, RA2 Resistor, Chip Array Terminal CTS 745C101104JPTR Bus 100 k Ω 5%, 1/16W, SMD 6.2pF C28, C29 Capacitor, C0G Ceramic 6.2 pF Murata GRM1885C1H6R2DZ01D 0.5pF, 50WV, Size 0603 1.5nF C36-C43 Capacitor, C0G Ceramic 1500 pF TDK C1608C0G1H152JT 5%, 50WV, Size 0603 2.2nF C17-C20 Capacitor, C0G Ceramic 2200 TDK C1608C0G1H222JT pF 5%, 50WV, Size 0603 4.7nF C33 Capacitor, X7R Ceramic 4700 pF TDK C1608X7R1H472KT 10%, 50WV, Size 0603 10nF C32, C34, C76 Capacitor, X7R Ceramic 0.01 µ F TDK C1608X7R1H103KT 5%, 50WV, Size 0603 0.1 µ F C4-C12, C26, Capacitor, X7R Ceramic 0.1 µ F TDK C1608X7R1H104KT C52-C63, 10%, 50WV, Size 0603 C77-C80, C83, C84 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

www.ti.com Schematics and Layout Table ADS1174EVM/ADS1274EVM Bill of Materials (continued) Item No. Qty Value Ref Des 0.15 µ F Capacitor, X7R Ceramic 0.15 µ F TDK C1608X7R1E154KT 10%, 25WV, Size 0603 0.22 µ F C35 Capacitor, X7R Ceramic 0.22 µ F TDK C1608X7R1C224KT 10%, 16WV, Size 0603 0.47 µ F Capacitor, X5R Ceramic 0.47 µ F TDK C1608X5R1A474KT 10%, 10WV, Size 0603 µ F C27, C81 Capacitor, X7R Ceramic µ F TDK C1608X7R1C105KT 10%, 16WV, Size 0603 4.7 µ F C25 Capacitor, X7R Ceramic 4.7 µ F Murata GRM21BR61C475KA88L 10%, 6.3WV, Size 0805 µ F C21-C24, C82 Capacitor, X5R Ceramic µ F TDK C3216X5R1C106MT 20%, 16WV, Size 1206 µ F C30, C31 Capacitor, X5R Ceramic µ F TDK C3225X5R1C226MT 20%, 16WV, Size 1210 100 µ F Capacitor, X5R Ceramic 100 µ F TDK C3225X5R0J107MT 20%, 6.3WV, Size 1210 Precision Delta-Sigma ADC, Texas ADS1274IPAP Differential Input Instruments (ADS1274EVM) or ADS1174IPAP (ADS1174EVM) Precision Voltage Reference, 2.5V Texas REF5025ID Instruments Operational Amplifier, Dual Texas OPA2350EA Instruments Precision Voltage Reference Texas REF3125AIDBZ Instruments U8-U11 Fully-Differential Amplifier Texas OPA1632DGN Instruments U19 Single, Inverter Texas SN74LVC1G04DBVR Instruments U20 Single, D Flip-Flop Texas SN74LVC2G74DCTR Instruments Single, 2-Line to Data Texas SN74LVC2G157DCT Selector/Multiplexer Instruments U16 LDO Voltage Regulator, 1.8 200 Texas TPS73018DBV mA Instruments Dual output 800-mA DC/DC Switch Texas TPS65131RGET boost converter Instruments U17, U18 16-Bit I2C I/O Expander Texas PCA9535RGE Instruments U21 EEPROM, 1.8V, 256K Microchip 24AA256-I/ST MHz 3.3-V Oscillator CTS CB3LV-3I-27M0000 J5A, J9A 20-pin SMT Plug Samtec TSM-110-01-L-DV-P J5B, J9B 20-pin SMT Socket Samtec SSW-110-22-F-D-VS-K J3A 10-pin SMT Plug Samtec TSM-105-01-L-DV-P J3B 10-pin SMT Socket Samtec SSW-105-22-F-D-VS-K J2, Header Strip, 4-pin Samtec TSW-102-07-L-D J4, J17, J18 Header Strip, 2-pin Samtec TSW-102-07-L-S J1, J15, J16, Header Strip, 4-pin Samtec TSW-103-07-L-S J19 Terminal Block 3.5-mm 9-Position On Shore ED555/9DS PCB Technology SBAU134A August 2008 Revised May 2009 ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK Submit Documentation Feedback

www.ti.com Table ADS1174EVM/ADS1274EVM Bill of Materials (continued) Item No. Qty Value Ref Des D1, Schottky Diode, 20V, ON MBRM120LT1G Semiconductor J10-J14 Bus Wire (18-22 Gauge) L1, Inductor, 4.7 µ 1.8 6x6mm, EPCOS B82462G4472M SMD S1-S5 Switch, Mini Slide, DPDT NKK SS22SDP2 S10 DIP Switch, Half-Pitch, 8-Position C K TDA08H0SB1 S11 DIP Switch, Half-Pitch, 6-Position C K TDA06H0SB1 S12 4PDT Slide Switch, Top Actuator Tyco/Alcoswitch MMS42 TP8 PCB Test Point, Large Loop, Keystone 5011 Through-hole Electronics N/A Shorting Blocks Samtec SNT-100-BK-G-H ADS1174EVM, ADS1274EVM, ADS1174EVM-PDK, and ADS1274EVM-PDK SBAU134A August 2008 Revised May 2009 Submit Documentation Feedback

A B C D 654321 D C B A ti 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE SHEET OF FILE SIZE DATE REV29 AUG 2008 DRAWN BY ENGINEER B DATA ACQUISITION PRODUCTS

REVISION HISTORY

HIGH-PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP RUSSELL ANDERSON RUSSELL ANDERSON B ENGINEERING CHANGE NUMBER APPROVED ADS1174EVM DOCUMENT CONTROL NO. 6496220 CNTL1 CLKX3 CLKR5 FSX7 FSR9 DX11 DR13 INT15 TOUT17 GPIO519 GPIO0 2 DGND 4 GPIO1 6 GPIO2 8 DGND 10 GPIO3 12 GPIO4 14 SCL 16 DGND 18 SDA 20 SERIALHDR +10V -10V DVDD R38 AVDD AVDD OBCLK EOH1 GND 2OUT3 VCC 4 CTS_CB3LV-3I-27.0000-T IOVDD C34 10 nF IOVDD C27 1uF A 1 B 2Y3 GND 4 Y5 A/B 6 VCC8 SN74LVC2G157DCT R48 470K J3A (TOP) = SAM_TSM-105-01-L-DV-P J3B (BOTTOM) = SAM_SSW-105-22-F-D-VS-K SCLK DOUT SYNC IOVDD +VA1 -VA 2 +5VA3 -5VA 4 DGND5 AGND 6 +1.8VD7 VD1 8 +3.3VD9 +5VD 10 POWERHDR R39 150nF C12 0.1uF 0.1uF AVDD 0.1uF AVDD 0.1uF SW-DPDT REFP REFN C21 10uF IOVDD C11 0.1uF 0.1uF IOVDD 0.1uF AVDD INP1 BSW7 INN5 VIN4 ENP8 PSP9 ENN10 PSN11 AGND19 INP24 NC12 NC 20 INN6 OUTN 14 PGND 3PGND 2CN 18CP 21 OUTN 13VNEG 15FBN 16VREF 17FBP 22VPOS 23 TPS65131RGE EPC_B82462-G4472-M C25 4.7 uF C30 22 uF 16V MBRM120 MBRM120 R52 1.1M R53 150K R50 10K C28 6.2 pF C31 22 uF 16V C35 0.22 uF R37 100 R54 150K R55 1.24M R51 10K C29 6.2 pF EPC_B82462-G4472-MC32 10 nFC33 4.7 nF C26 0.1uF R45 R44 R42 47 R40 R41 47 R47 47K R49 470K DVDD C10 0.1uF TP1 8 4 U3A OPA2350 U3B OPA2350 0.1uF EXT GPIO5 GND 0.47uF JPR-1X3 100uF IN1 OUT 2 GND3 REF3125AIDBZ TP2 TP5 TP6 TP7TP3 TP4 1 2 3 4 C22 10uF C24 10uF C23 10uF AINN1 AINN2 AINP1 AINP2 AN1 AP1 AN2 AP2 AN3 AP3 AN4 AP4 VCOM SheetB SheetB.Sch AINN3 AINN4 AINP3 AINP4 C17 2.2nF C0G C18 2.2nF C0G C19 2.2nF C0G C20 2.2nF C0G AINN1 AINN2 AINN3 AINN4 AINP1 AINP2 AINP3 AINP4 RA1 100K J5A (TOP) = SAM_TSM-110-01-L-DV-P J5B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K

12 J10

+VA -VA J15 VA+ +VA J16 VA- -VA RA2 100K IN1 GND2 EN3 OUT 5 NR 4 U16 TPS73018DBV IOVDD C76 10nF C77 0.1uF J19 JPR-1X3 IOVDD S11 DIPSWITCH-6 IOVDD P001 P012 P023 P034 P045 P056 P067 P078 GND9 P1010 P1111 P1212 P13 13 P14 14 P15 15 P16 16 P17 17 A0 18 SCL 19SDA 20VCC 21INT 22A1 23A2 24 U17 PCA9535RGE C78 0.1uF IOVDD JPR-2X1 TP8 GND TP9 +10V TP10 -10V TP11 P001 P012 P023 P034 P045 P056 P067 P078 GND9 P1010 P1111 P1212 P13 13 P14 14 P15 15 P16 16 P17 17 A0 18 SCL 19SDA 20VCC 21INT 22A1 23A2 24 U18 PCA9535RGE C79 0.1uF IOVDD R70 10K R71 4.22K C80 0.1uF R72 100k IOVDD 2 4 5 3U19 SN74LVC1G04DBV CLK1 D2 Q 3 GND 4 Q 5 CLR 6PRE7 VCC8 U20 SN74LVC2G74DCTR IOVDD C83 0.1uF VIN2 VOUT 6 TRIM 5GND4 TEMP3 REF5025 C82 10uF C81 1uF AVDD 100K IOVDD J18 EXT CLK J17 A01 A12 GND 4 SDA 5 SCL 6 WP7 VCC 8 A23 U21 MCP_24LC256-I/ST C84 0.1uF IOVDD IOVDD S12 ALC_MMS42 J20 HEADER-3X2 RA3 100K DOUT 1 8 2 7 3 6 4 5 S10 DIPSWITCH-4 NC33 MODE34 DGND35 DGND36 DGND37 DGND38 PWDN439 PWDN340 PWDN241 PWDN142 AGND43 AVDD44 NC45 NC46 NC47 NC48 NC49 NC50 NC51 NC52 AVDD53 AGND54 VCOM55 VREFP56 VREFN57 AGND58 AGND59 AVDD60 AINP461 AINN462 AINP363 AINN364 AINP2 1 AINN2 2 AINP1 3 AINN1 4 AVDD 5 AGND 6 DGND 7 TEST0 8 TEST1 9 CLKDIV 10 SYNC 11 DIN 12 NC 13 NC 14 NC 15 NC 16 DOUT4 17DOUT3 18DOUT2 19DOUT1 20 DGND 21IOVDD 22IOVDD 23DGND 24DGND 25DVDD 26 CLK 27SCLK 28 DRDY/FSYNC 29FORMAT2 30FORMAT1 31FORMAT0 32 ADS1174IPAP

A B C D 654321 D C B A ti 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE SHEET OF FILE SIZE DATE REV DRAWN BY ENGINEER REV ENGINEERING CHANGE NUMBER APPROVED B DATA ACQUISITION PRODUCTS HIGH-PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP DOCUMENT CONTROL NO. AN0+ 2 AN1+ 4 AN2+ 6 AN3+ 8 AN4+ 10 AN5+ 12 AN6+ 14 AN7+ 16 REF- 18 REF+ 20AGND17 AGND19 AN0-1 AN1-3 AN2-5 AN3-7 AGND9 AGND11 AGND13 VCOM15 ANALOGHDR VOCM OPA1632 R58 49.9 R59 49.9 R8 1K C55 0.1uF C38 1.5nF C0G C39 1.5nF C0G C56 0.1uF +10V -10V R11 R10 VOCM U10 OPA1632 R60 49.9 R61 49.9 R12 1K C58 0.1uF C40 1.5nF C0G C41 1.5nF C0G C59 0.1uF +10V -10V R15 R13 R14 C60 0.1uF C57 0.1uF REFN REFP J9A (TOP) = SAM_TSM-110-01-L-DV-P J9B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K VOCM U11 OPA1632 R62 49.9 R63 49.9 R16 1K C61 0.1uF C42 1.5nF C0G C43 1.5nF C0G C62 0.1uF +10V -10V R19 R17 R18 C63 0.1uF VOCM OPA1632 R56 49.9 R57 49.9 R4 1K C52 0.1uF C36 1.5nF C0G C37 1.5nF C0G C53 0.1uF +10V -10V C54 0.1uF TERMBLOCK-MINI-9 ANP1 ANP2 ANP3 ANP4 ANN1 ANN2 ANN3 ANN4 SW-DPDT SW-DPDT SW-DPDT SW-DPDT ANN1 ANN2 ANN3 ANN4 ANP1 ANP2 ANP3 ANP4 CHAN-N1 CHAN-N2 CHAN-N3 CHAN-N4 CHAN-P1 CHAN-P2 CHAN-P3 CHAN-P4 AN1 AP1 AN2 AP2 AN3 AP3 AN4 AP4 VCOM CHAN-N1 CHAN-N2 CHAN-N3 CHAN-N4 CHAN-P1 CHAN-P2 CHAN-P3 CHAN-P4 CM CM ADS1174EVMRUSSELL ANDERSON RUSSELL ANDERSON

29 AUG 2008 B6496220

A B C D 654321 D C B A ti 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE SHEET OF FILE SIZE DATE REV29 AUG 2008 DRAWN BY ENGINEER B DATA ACQUISITION PRODUCTS HIGH-PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP RUSSELL ANDERSON RUSSELL ANDERSON B ENGINEERING CHANGE NUMBER APPROVED ADS1274EVM DOCUMENT CONTROL NO. 6492533 CNTL1 CLKX3 CLKR5 FSX7 FSR9 DX11 DR13 INT15 TOUT17 GPIO519 GPIO0 2 DGND 4 GPIO1 6 GPIO2 8 DGND 10 GPIO3 12 GPIO4 14 SCL 16 DGND 18 SDA 20 SERIALHDR +10V -10V DVDD R38 AVDD AVDD OBCLK EOH1 GND 2OUT3 VCC 4 CTS_CB3LV-3I-27.0000-T IOVDD C34 10 nF IOVDD C27 1uF A 1 B 2Y3 GND 4 Y5 A/B 6 VCC8 SN74LVC2G157DCT R48 470K J3A (TOP) = SAM_TSM-105-01-L-DV-P J3B (BOTTOM) = SAM_SSW-105-22-F-D-VS-K SCLK DOUT SYNC IOVDD +VA1 -VA 2 +5VA3 -5VA 4 DGND5 AGND 6 +1.8VD7 VD1 8 +3.3VD9 +5VD 10 POWERHDR R39 150nF C12 0.1uF 0.1uF AVDD 0.1uF AVDD 0.1uF SW-DPDT REFP REFN C21 10uF IOVDD C11 0.1uF 0.1uF IOVDD 0.1uF AVDD INP1 BSW7 INN5 VIN4 ENP8 PSP9 ENN10 PSN11 AGND19 INP24 NC12 NC 20 INN6 OUTN 14 PGND 3PGND 2CN 18CP 21 OUTN 13VNEG 15FBN 16VREF 17FBP 22VPOS 23 TPS65131RGE EPC_B82462-G4472-M C25 4.7 uF C30 22 uF 16V MBRM120 MBRM120 R52 1.1M R53 150K R50 10K C28 6.2 pF C31 22 uF 16V C35 0.22 uF R37 100 R54 150K R55 1.24M R51 10K C29 6.2 pF EPC_B82462-G4472-MC32 10 nFC33 4.7 nF C26 0.1uF R45 R44 R42 47 R40 R41 47 R47 47K R49 470K DVDD C10 0.1uF TP1 8 4 U3A OPA2350 U3B OPA2350 0.1uF EXT GPIO5 GND 0.47uF JPR-1X3 100uF IN1 OUT 2 GND3 REF3125AIDBZ TP2 TP5 TP6 TP7TP3 TP4 1 2 3 4 C22 10uF C24 10uF C23 10uF AINN1 AINN2 AINP1 AINP2 AN1 AP1 AN2 AP2 AN3 AP3 AN4 AP4 VCOM SheetB SheetB.Sch AINN3 AINN4 AINP3 AINP4 C17 2.2nF C0G C18 2.2nF C0G C19 2.2nF C0G C20 2.2nF C0G AINN1 AINN2 AINN3 AINN4 AINP1 AINP2 AINP3 AINP4 RA1 100K J5A (TOP) = SAM_TSM-110-01-L-DV-P J5B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K +VA -VA J15 VA+ +VA J16 VA- -VA RA2 100K IN1 GND2 EN3 OUT 5 NR 4 U16 TPS73018DBV IOVDD C76 10nF C77 0.1uF J19 JPR-1X3 IOVDD S11 DIPSWITCH-6 IOVDD P001 P012 P023 P034 P045 P056 P067 P078 GND9 P1010 P1111 P1212 P13 13 P14 14 P15 15 P16 16 P17 17 A0 18 SCL 19SDA 20VCC 21INT 22A1 23A2 24 U17 PCA9535RGE C78 0.1uF IOVDD JPR-2X1 TP8 GND TP9 +10V TP10 -10V TP11 P001 P012 P023 P034 P045 P056 P067 P078 GND9 P1010 P1111 P1212 P13 13 P14 14 P15 15 P16 16 P17 17 A0 18 SCL 19SDA 20VCC 21INT 22A1 23A2 24 U18 PCA9535RGE C79 0.1uF IOVDD R70 10K R71 4.22K C80 0.1uF R72 100k IOVDD 2 4 5 3U19 SN74LVC1G04DBV CLK1 D2 Q 3 GND 4 Q 5 CLR 6PRE7 VCC8 U20 SN74LVC2G74DCTR IOVDD C83 0.1uF VIN2 VOUT 6 TRIM 5GND4 TEMP3 REF5025 C82 10uF C81 1uF AVDD 100K IOVDD J18 EXT CLK J17 A01 A12 GND 4 SDA 5 SCL 6 WP7 VCC 8 A23 U21 MCP_24LC256-I/ST C84 0.1uF IOVDD IOVDD S12 ALC_MMS42 J20 HEADER-3X2 RA3 100K DOUT 1 8 2 7 3 6 4 5 S10 DIPSWITCH-4 MODE133 MODE034 DGND35 DGND36 DGND37 DGND38 PWDN439 PWDN340 PWDN241 PWDN142 AGND43 AVDD44 NC45 NC46 NC47 NC48 NC49 NC50 NC51 NC52 AVDD53 AGND54 VCOM55 VREFP56 VREFN57 AGND58 AGND59 AVDD60 AINP461 AINN462 AINP363 AINN364 AINP2 1 AINN2 2 AINP1 3 AINN1 4 AVDD 5 AGND 6 DGND 7 TEST0 8 TEST1 9 CLKDIV 10 SYNC 11 DIN 12 NC 13 NC 14 NC 15 NC 16 DOUT4 17DOUT3 18DOUT2 19DOUT1 20 DGND 21IOVDD 22IOVDD 23DGND 24DGND 25DVDD 26 CLK 27SCLK 28 DRDY/FSYNC 29FORMAT2 30FORMAT1 31FORMAT0 32 ADS1274IPAP

A B C D 654321 D C B A ti 6730 SOUTH TUCSON BLVD., TUCSON, AZ 85706 USA TITLE SHEET OF FILE SIZE DATE REV DRAWN BY ENGINEER REV ENGINEERING CHANGE NUMBER APPROVED B DATA ACQUISITION PRODUCTS HIGH-PERFORMANCE ANALOG DIVISION SEMICONDUCTOR GROUP DOCUMENT CONTROL NO. AN0+ 2 AN1+ 4 AN2+ 6 AN3+ 8 AN4+ 10 AN5+ 12 AN6+ 14 AN7+ 16 REF- 18 REF+ 20AGND17 AGND19 AN0-1 AN1-3 AN2-5 AN3-7 AGND9 AGND11 AGND13 VCOM15 ANALOGHDR VOCM OPA1632 R58 49.9 R59 49.9 R8 1K C55 0.1uF C38 1.5nF C0G C39 1.5nF C0G C56 0.1uF +10V -10V R11 R10 VOCM U10 OPA1632 R60 49.9 R61 49.9 R12 1K C58 0.1uF C40 1.5nF C0G C41 1.5nF C0G C59 0.1uF +10V -10V R15 R13 R14 C60 0.1uF C57 0.1uF REFN REFP J9A (TOP) = SAM_TSM-110-01-L-DV-P J9B (BOTTOM) = SAM_SSW-110-22-F-D-VS-K VOCM U11 OPA1632 R62 49.9 R63 49.9 R16 1K C61 0.1uF C42 1.5nF C0G C43 1.5nF C0G C62 0.1uF +10V -10V R19 R17 R18 C63 0.1uF VOCM OPA1632 R56 49.9 R57 49.9 R4 1K C52 0.1uF C36 1.5nF C0G C37 1.5nF C0G C53 0.1uF +10V -10V C54 0.1uF TERMBLOCK-MINI-9 ANP1 ANP2 ANP3 ANP4 ANN1 ANN2 ANN3 ANN4 SW-DPDT SW-DPDT SW-DPDT SW-DPDT ANN1 ANN2 ANN3 ANN4 ANP1 ANP2 ANP3 ANP4 CHAN-N1 CHAN-N2 CHAN-N3 CHAN-N4 CHAN-P1 CHAN-P2 CHAN-P3 CHAN-P4 AN1 AP1 AN2 AP2 AN3 AP3 AN4 AP4 VCOM CHAN-N1 CHAN-N2 CHAN-N3 CHAN-N4 CHAN-P1 CHAN-P2 CHAN-P3 CHAN-P4 CM CM ADS1274EVMRUSSELL ANDERSON RUSSELL ANDERSON

29 AUG 2008 B6492533

(TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives. Should this evaluation board/kit not meet the specifications indicated in the User s Guide, the board/kit may be returned within days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for

applications

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