MAX5318EVSYS MAXIM | Alldatasheet
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S On-Board Direct Digital Synthesis (Xilinx® Spartan®-3A FPGA) S On-Board Waveform Memory (1M x 24-Bit SRAM) S On-Board +4.096V Ultra-High-Precision Voltage Reference (MAX6126) S SMA Connectors for Waveform Synchronization and DAC Output S Proven High-Performance 18-Bit DAC PCB Layout S Stand-Alone and GUI Operation Modes S Eight Diagnostic LEDs S Five Pushbuttons For Functionality Tests S High-Speed SPI Interface S High-Speed USB 2.0 USB-PC Connection (Cable Included) S Windows XP-, Windows Vista-, and Windows 7-Compatible Software S RoHS Compliant S Fully Assembled and Tested MAXUSB2XILINXMB INTERFACE BOARD SDRAM SYNC_OUT RESET SW4 SW5 RECONFIGURE SW3 SYNC_IN SPI FLASH XILINX SPARTAN 3 FPGA CS SCLKMICROBLAZE DIRECT DIGITAL SYNTHESIZER (DDS) SPI CONTROLLER GPIO OTHER LOGIC AND PERIPHERALS USB FIFO USB TO PC OUT PUSH BUTTONS LEDs POWER SUPPLIES DIN DOUT CONTROL LEVEL TRANSLATORS SPI FLASH MAX5318 +4.096V MAX6126 18-BIT DAC MAX5318 EV KIT BOARD POWER SUPPLY CONNECTORSSRAM SRAM MAX5318 Evaluation System Evaluates: MAX5318 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. System Diagram 19-6231; Rev 0; 3/12 Ordering Information appears at end of data sheet. Windows, Windows XP, and Windows Vista are registered trademarks of Microsoft Corp. Xilinx and Spartan are registered trademarks of Xilinx Inc.
MAX5318EVKIT# 1 MAX5318 EV kit MAXUSB2XILINXMB# 1 Serial interface board DESIGNATION QTY DESCRIPTION C1, C5, C14, C15, C16, C19, C21, C23, C30–C37 0.1FF Q10%, 16V X7R ceramic capacitors (0402) Murata GRM155R71C104K C2, C4, C6, C8, C17, C20, C27, C28, C29, C63 0.01FF Q10%, 16V X7R ceramic capacitors (0402) Murata GRM155R71C103K C3, C9, C10, C11, C38–C40 7 1FF Q10%, 16V X7R ceramic capacitors (0603) Murata GRM188R71C105K C7, C60 2 100pF Q5%, 50V C0G ceramic capacitors (0402) Murata GRM1555C1H101J C12, C22, C42, C44, C46, C48, C50, C52, C55, C56, C58, C62, C65 180pF Q5%, 50V C0G ceramic capacitors (0402) Murata GRM1555C1H181J C13, C41, C43, C45, C47, C49, C51, C53, C54, C57, C59, C61, C64 1000pF Q5%, 50V C0G ceramic capacitors (0402) Murata GRM155R71H102J C18 1 4.7FF Q10%, 6.3V X5R ceramic capacitor (0603) Murata GRM188R60J475K C24, C25, C26 3 10FF Q10%, 10V X7R ceramic capacitors (0805) Murata GRM21BR71A106K D1 1 30V, 500mA Schottky diode (SOD123) FB1–FB8 8 600I Q25% 500mA ferrite beads (0603) TDK MMZ1608B601C J1 1 50I SMA connector, vertical mount J2 1 Self-mating hermaphroditic strip (2x20) JU1, JU2 2 2-pin headers DESIGNATION QTY DESCRIPTION JU3, JU4, JU6 3 3-pin headers JU5 1 5-pin header R1, R5, R9–R30 24 22I Q5% resistors (0402) R2 1 100kI Q5% resistor (0603) R3 1 10kI Q5% resistors (0603) R4 1 1kI Q5% resistor (0603) R6 1 0I Q5% resistor (0603) R7 1 12.4kI Q1% resistor (0603) R8 1 10kI Q1% resistor (0603) TP1, TP2, TP3, TP8 4 Orange multipurpose test points TP4, TP5, TP10 3 Red multipurpose test points TP6, TP9, TP11, TP25–TP27 6 Black multipurpose test points TP7 1 White multipurpose test point TP12–TP24 13 Orange miniature test points U1 1 18-bit DAC (24 TQFN-EP*) Maxim MAX5318GTG+ U2 1 +4.096V ultra-high-precision voltage reference (8 SO) Maxim MAX6126AASA41+ U4 1 SPI serial flash (8 SO8W) U5 1 Negative output LDO (5 SOT23) Maxim MAX1735EUK30+ U6, U7, U8 3 2-bit level translators (8 SSOP) U9 1 8-bit level translator (24 TSSOP) U10 1 300mA LDO (6 SOT23) Maxim MAX1983EUT+ — 6 Shunts — 1 PCB: MAX5318 EVALUATION KIT MAX5318 Evaluation System Evaluates: MAX5318 Maxim Integrated Component Lists MAX5318 EV System MAX5318 EV Kit *EP = Exposed pad.
Murata Electronics North America Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com FILE DESCRIPTION INSTALL.EXE Installs the EV kit files on your computer MAX5318EVKIT.EXE Application program CDM20600.EXE Installs the USB device driver UNINSTALL.EXE Uninstalls the EV kit software USB_Driver_Help_200.PDF USB driver installation help file MAX5318 Evaluation System Evaluates: MAX5318 Maxim Integrated Quick Start Required Equipment
- MAX5318 EV kit
- MAXUSB2XILINXMB interface board (USB cable included)
- Windows XP, Windows Vista or Windows 7 PC with a spare USB port
- Power supply, +5V DC at 600mA
- Power supply, -5V DC at 100mA
- Oscilloscope Note: The EV system has two operation modes: stand- alone mode and GUI mode. See the Detailed Description of Hardware section for operation mode details. Stand-Alone Mode Procedure 1) Verify that the jumpers on the MAXUSB2XILINXMB interface board are in their default positions as shown in Table 3. 2) Verify that the jumpers on the EV kit board are in their default positions, as shown in Table 4. 3) Connect the EV kit board to the MAXUSB2XILINXMB interface board. 4) Connect +5V DC power supply to the MAXUSB2XILINXMB interface board between TP1 (+5V) and TP2 (GND). Keep power off. 5) Connect +5V DC power supply to the EV kit between TP5 (+5V) and TP6 (AGND). Keep power off. 6) Connect -5V DC power supply to the EV kit between TP7 (-5V) and TP6 (AGND). Keep power off. 7) Connect oscilloscope probe 1 to the EV kit SMA connector J1 or test point TP1 (OUT). 8) Turn on the power supplies for the EV kit board first. Then turn on the power supply for the MAXUSB2XILINXMB board. 9) Observe that the DAC outputs a sine wave of 1kHz, amplitude range is 0 to 4.096V. 10) Press and release SW3 to select between 8 sine waveforms with different frequencies. A single LED from LED4–LED11 is turned on, indicating a different frequency, as shown in Table 1. 11) Press and release SW4 to select between 8 sine waveforms with different frequencies. A single LED from LED4–LED11 is turned off, indicating a different frequency, as shown in Table 2. 12) Press SW5 to toggle TC/ SB logic level. By default, TC/SB = high and the DDS output is set to two’s- complement format. If TC/SB = low, the sine wave- form is distorted. 13) Press SW1 (RESET) to reset the MAXUSB2XILINXMB board and the EV kit board. Component Suppliers MAX5318 EV Kit Files Note: Indicate that you are using the MAX5318 when contacting these component suppliers.
mode functions as described in the previous section. lined refers to items from the Windows operating system. rary folder and uncompress the ZIP file. condition and it is safe to proceed with installation. USB device driver on Windows. their default positions, as shown in Table 4. (+5V) and TP2 (GND). Keep power off. TP5 (+5V) and TP6 (AGND). Keep power off. TP7 (-5V) and TP6 (AGND). Keep power off. connector J1 or test point TP1 (OUT). Table 1. LED4–LED11 Relationship With DAC Output Frequency Controlled by SW3 Table 2. LED4–LED11 Relationship With DAC Output Frequency Controlled by SW4
Evaluates: MAX5318 Maxim Integrated Detailed Description of Software The main window of the evaluation software (shown in Figure 1) displays the MAXUSB2XILINXMB DDS signal generator on the left side of the window, and the MAX5318 DAC on the right side. When DAC Data Source is set to DDS, the MAX5318 DIN register is driven by the DDS signal generator. The output frequency is controlled by the Frequency track bar, or by typing the output frequency value into its edit field and pressing enter. The sample update rate is controlled by the Update Frequency drop-down box. The DDS output waveform frequency is calculated as follows: UPDATE INC f xP OUTf Where fUPDATE is the DDS update frequency, PINC is the DDS phase increment. The DDS is implemented with a 24-bit phase accumulator. The gain and offset of the DDS output waveform can be adjusted by the Gain and Offset track bars in the DDS section of the GUI. The shape of the waveform is selected by the Waveform group box. The SPI clock frequency is selectable under the Advanced menu. Selecting a slower SPI clock frequency may limit the available update frequency. If the IC’s GAIN and OFFSET registers are changed, the software briefly disables the DDS while performing the requested write operations, then automatically re-enables the DDS. When DAC Data Source is set to SPI/Direct, the IC’s DIN register is driven by the controls on the right side of the window. Write the DIN, GAIN, or OFFSET register by dragging its track bar, or by typing numbers into the corresponding edit fields. When the MAXUSB2XILINXMB is powered up and connected to the computer’s USB port, the software automatically connects and configures the IC to enable data output. This can be prevented by unchecking the Advanced menu item’s Connect Automatically and Enable DOUT After Connecting. Arbitrary Waveform Generation The DDS can accept user-defined arbitrary waveform data stored in a comma-separated values (CSV) file. There are 1,048,576 samples stored in the file, representing one cycle of the arbitrary waveform. The sample data are 18-bit decimal values with 0 representing zero scale and 262,143 representing full scale. Click the File menu item Load Arbitrary Waveform… to download the waveform to the DDS and stream to the DAC. A staircase waveform is stored in the system at power-up. Detailed Description of Hardware The MAX5318 EV kit can operate in two modes: stand- alone and GUI. The stand-alone mode is for quick IC functional - ity demonstration purposes only. In this mode, the MAXUSB2XILINXMB interface board generates one of 16 predefined digital signals using the DDS implemented on the FPGA. Press and release SW3 to select between eight sine wave - forms with different frequencies. A single LED from LED4– LED11 is turned on, indicating a different frequency, as shown in Table 1. Press and release SW4 to select between eight sine wave - forms with different frequencies. A single LED from LED4– LED11 is turned off, indicating a different frequency, as shown in Table 2. In the stand-alone mode, the DAC is updated at 200kHz, the SPI clock speed is set at 10MHz. The GUI mode is for a complete feature exercise of the IC through a PC. The user can explore many different application cases (e.g., DAC update frequencies, DAC output waveforms, DAC register settings, and DAC interface speed selections, etc). The EV kit provides a proven layout for the 18-bit high- precision voltage output DAC. An on-board +4.096V volt - age reference (MAX6126) is provided. Contact Maxim for other high-precision voltage references if reference volt- ages other than +4.096V are required. SYNC_IN and SYNC_OUT Signals There is an SMA connector (J5) labeled INPUT and another SMA connector (J4) labeled OUTPUT on the MAXUSB2XILINXMB interface board. The INPUT signal is called SYNC_IN and the OUTPUT signal is called SYNC_ OUT, respectively. The SYNC_IN signal is applied to the Schmitt-trigger input and the Schmitt-trigger output is applied to the FPGA DDS module. The SYNC_IN is used to implement a simple “crash lock” for the DDS signal generator. At the rising edge of the SYNC_IN clock, the DDS resets itself and the DDS phase accumulator is reset to the POFF value written by the GUI (default to 0). The SYNC_OUT signal shows when the generated wave- form starts a new cycle. Set the SYNC_In_Out_Width register bit 31 to 1 to enable the SYNC_IN signal. Set the bit to 0 to disable the SYNC_ IN signal. Set the SYNC_In_Out_Width register bit 30 to 1 to enable the SYNC_OUT signal. Set the bit to 0 to disable the SYNC_OUT signal.
Pin 1 only* FPGA mode signal M0 = 1. 1-2 FPGA mode signal M0 = 0. JU3 Pin 1 only FPGA mode signal M1 = 1. 1-2* FPGA mode signal M1 = 0. JU4 Pin 1 only FPGA mode signal M2 = 1. 1-2* FPGA mode signal M2 = 0. JU8 1-2* HOLD1 is connected to ground. 2-3 HOLD2 is connected to ground. 1-2* U7 powers the 3.3V supply rail. 1-2* U8 powers the 0.9V supply rail. 1-2* U10 powers the 1.2V supply rail. 1-2* U9 powers the 1.8V supply rail. Table 3. MAXUSB2XILINXMB Interface Board Jumper Descriptions (JU1–JU13) format. If TC/SB = low, the sine waveform is distorted.
1-2* AVDD is connected to TP5 (+5V). JU2 1-2* RFB is connected to OUT. Pin 1 only RFB is disconnected from OUT. Pin 1 only* USB bridge does not drive J2 or J3. Pin 1 only* USB bridge does not drive J2 or J3. Pin 1 only* USB bridge does not drive J2 or J3. Pin 1 only* USB bridge does not drive J2 or J3. Table 4. EV Kit Jumper Descriptions (JU1–JU6) Table 3. MAXUSB2XILINXMB Interface Board Jumper Descriptions (JU1–JU13) (continued)
Figure 3. MAX5318 EV Kit Schematic
Figure 7. MAX5318 EV Kit PCB Layout—Power Layer 3 Figure 8. MAX5318 EV Kit PCB Layout—Solder Side
MAX5318EVSYS# EV System MAX5318 Evaluation System Evaluates: MAX5318 Maxim Integrated
Ordering Information
#Denotes RoHS compliant.
0 3/12 Initial release — MAX5318 Evaluation System Evaluates: MAX5318 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 13 © 2012 Maxim Integrated Products, Inc. The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc.