AK9223 AKM | Alldatasheet
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Resolution: 16-bit Linearity: 13-bit Input Voltage Range: ±2.3V High Accurate Reference Voltage: ±1% (2.5V ±0.025V), ±20ppm/C (typ.) Gain Error: 0.5% (max.) 2ch ΔΣ Modulator 2ch Input Reference 20MHz OSC Selectable External Clocks Power Consumption: 67.5 mW (SEL=1, AVDD = DVDD = 5V) Power Supply: AVDD = 4.5 to 5.5V、DVDD = 2.7 to 5.5V Ta = -40 to 105C Small Package: 24-pin TSSOP (0.65mm pitch) Figure 1. Block Diagram
[AK9223] 014010283-E-01 2 2015/01 ■ Pin Configurations
1 AVDD
9 TEST1
[AK9223] 014010283-E-01 3 2015/01 Pin Functions Pin No. Pin Name I/O Function 1 AVDD - Analog Power Supply: 4.5V to 5.5V Connect to VSS1~VSS4 with a 0.1μF ceramic capacitor.
2 VSS1 - Ground
3 REFI0 I Reference Voltage input for Channel 0
4 TEST0 - TEST Pin. This pin must be open.
5 AIN0+ I Channel 0 Analog input+
6 AIN0- I Channel 0 Analog input-
7 AIN1+ I Channel 1 Analog input+
8 AIN1- I Channel 1 Analog input-
9 TEST1 - TEST Pin. This pin must be open.
10 REFI1 I Reference Voltage input for Channel 1
11 VSS2 - Ground
12 AVDD - Analog Power Supply: 4.5V to 5.5V Connect to VSS1~VSS4 with a 0.1μF ceramic capacitor. 13 AVDD - Analog Power Supply: 4.5V to 5.5V Connect to VSS1~VSS4 with a 0.1μF ceramic capacitor.
14 VSS3 - Ground
15 SEL I Clock select input
“H”: internal oscillator, “L”: external clock source
16 CLKI I External clock input
If not used, must be tied to DVDD or VSS5 17 DVDD - Digital Power Supply: 2.7 V to 3.6V (or 4.5V to 5.5V) Connect to VSS5 with a 0.1μF ceramic capacitor.
18 VSS5 - Ground
19 CLKO O Clock output
20 OUT1 O Data output of Channel 1 modulator
21 OUT0 O Data output of Channel 0 modulator
22 VSS4 - Ground
23 REF0 I Reference Voltage input for Channel 0
24 AVDD - Analog Power Supply: 4.5V to 5.5V Connect to VSS1~VSS4 with a 0.1μF ceramic capacitor. Note 1. Digital input pins (SEL, CLKI) must not be allowed to float. ■ Handling of Unused Pin Unused I/O pins must be connected appropriately. Classification Pin Name Setting Analog AIN0+, AIN0-, AN1+, AIN1-, REFI0, REFI1 VSS
[AK9223] 014010283-E-01 4 2015/01 Absolute Maximum Ratings (VSS1~VSS5 = 0V; Note 2, Note 3) Parameter Symbol Min. Max. Unit Power Supply VDD -0.3 +6.0 V Analog Input Current (AIN0+, AIN0-, AIN1+, AIN1-, REFI0, REFI1) AIIN - 10 mA Analog Input Voltage (AIN0+, AIN0-, AIN1+, AIN1-, REFI0, REFI1) AVIN -0.3 AVDD+0.3 V Digital Input Current (CLKI, SEL) DIIN - 10 mA Digital Input Voltage (CLKI, SEL) DVIN -0.3 DVDD+0.3 V Storage Temperature Tstg -65 150 C WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. Recommended Operating Conditions (VSS1~VSS5 = 0V; Note 2, Note 3) Parameter Symbol Min. Typ. Max. Unit Analog Power Supply AVDD 4.5 5.0 5.5 V Digital Power Supply DVDD 3V logic level 5V logic level 2.7 4.5 3.0 3.6 5.5 V V Input Reference Voltage REFI 0.5 2.5 2.6 V Analog Input Vin= (AIN+) - (AIN-) -0.92 x VREF +0.92 x VREF V External clock 16 20 24 MHz Ambient Operating Temperature Ta -40 105 C Note 2. All voltages are with respect to ground. Note 3. VSS1, VSS2, VSS3, VSS4 and VSS5 must be connected to the same analog ground plane. Note 4. The power supply sequence between AVDD and DVDD is not critical upon power-up. * AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
[AK9223] 014010283-E-01 5 2015/01 Analog Characteristics (Ta = -40C to 105C; AVDD=5V, DVDD=3V, AIN+=0.2V to 4.8V, AIN-=2.5V, REFI=REFO=2.5V (internal), CLKI= 20MHz, and 16bit Sinc3 filter with OSR =256; unless otherwise specified) Parameter Min. Typ. Max. Unit Resolution 16 - - Bits Integral Nonlinearity (INL) Error (Note 5) VIN = ±2.3Vpp -8 ±3.8 +8 LSB VIN = ±2.0Vpp -4 ±1.8 +4 LSB Integral Nonlinearity Match - 1 4 LSB Differential Nonlinearity (DNL) Error -1 - +1 LSB Offset Error REFI=2.5V -3 ±1.5 +3 mV Offset Error Match - 0.2 2 mV Offset Error Drift (Note 6) -8 1 +8 V /C Gain Error (Note 7) Referenced REFI = 2.5V -0.5 ±0.02 +0.5 %FSR Gain Error Match - 0.1 0.5 %FSR Gain Error Drift (Note 8) - ±1.3 - ppm/C PSRR - 82 - dB Analog Input Full scale Differential Input Voltage Range: (AIN+)-(AIN-) AIN- =2.5V -REFI - +REFI V Specified Differential Input Voltage Range (AIN+)-(AIN-) AIN- =2.5V -0.92 x REFI - +0.92 x REFI V Absolute Input Voltage Range 0 - AVDD V Input Capacitance AIN to VSS - 1 - pF Input Leakage Current Clock turned off (Note 9) -1 - +1 A Differential Input Resistance 80 100 120 k Differential Input Capacitance - 2.5 - pF CMRR AIN- =2.5V at dc Vin = ±1.25Vpp at 40kHz 108 117 dB dB Sampling Dynamics Internal Clock Frequency SEL=1, -40C to +105C 9 10 11 MHz External Clock Frequency SEL=0 (Note 10) 1 20 24 MHz Dynamic Characteristics THD Vin = ±2.3Vpp at 5kHz - -85 -80 dB SFDR Vin = ±2.3Vpp at 5kHz 82 86 - dB S/N Vin = ±2.3Vpp at 5kHz 88 92 - dB Vin = ±2.0Vpp at 5kHz 87 91 - dB S/(N+D) Vin = ±2.3Vpp at 5kHz 80 84 - dB Channel to Channel Isolation Vin = ±2.3Vpp at 5kHz - 100 - dB Note 5. Integral nonlinearity is defined as the maximum deviation of the line through the end points of the specified input range. Note 6. This is the maximum variation referring the offset of Ta = 25C when the temperature range is from -40 to 105C. Note 7. Referring the REFI pin (It does not include internal VREF variation) Note 8. This value does not include temperature drift of the internal VREF. Note 9. Outgoing current from the AK9223 is defined as “-” polarity. Note 10. Recommended input range of the external clock is from 16MHz to 24MHz. The range of 1MHz~16MHz and 24MHz~32MHz can also be available with reduced accuracy.
[AK9223] 014010283-E-01 6 2015/01 REFO AK9223 CF Analog Characteristics (Ta = -40C to 105C; AVDD=5V, DVDD=3V, AIN+=0.2V to 4.8V, AIN-=2.5V, REFIx=REFO=2.5V (internal), CLKI= 20MHz, and 16bit Sinc3 filter with OSR =256; unless otherwise specified) Parameter Min. Typ. Max. Unit Reference Voltage Output Reference output voltage 2.475 2.5 2.525 V Reference output voltage drift ±20 ppm/ C Output current 10 A Short-circuit current 0.5 mA Turn-on settling time CF = 0.1F (Note 11) 500 s Reference Voltage Input Reference input voltage 0.5 2.5 2.6 V Input resistance 100 M Input capacitance 5 pF Input current 1 A Power Supplies AIDD SEL=1 SEL=0 DIDD DVDD=3V, CLKO = 10MHz DVDD=5V, CLKO = 10MHz 12.2 11.8 0.9 1.3 mA mA mA mA Note 11. To accuracy level of 0.1%. This value will be 40s (typ) when no load.
[AK9223] 014010283-E-01 7 2015/01 DC Characteristics (Ta = -40C to 105C, AVDD=4.5V to 5.5V, DVDD=2.7V to 5.5V) Parameter Symbol Min. Typ. Max. Unit High-Level Input Voltage1, DVDD=2.7V to 3.6V VIH1 2 - V Low-Level Input Voltage1, DVDD=2.7V to 3.6V VIL1 - 0.8 V High-Level Input Voltage2, DVDD=4.5V to 5.5V VIH2 0.7 x DVDD - - V Low-Level Input Voltage2, DVDD=4.5V to 5.5V VIL2 - - 0.3 x DVDD V Input capacitance Ic - 5 - pF Input Leakage Current Iin - - ±1 uA High-Level Output Voltage , DVDD=4.5V (Iout = -100µA) VOH2 4.44 - - V Low-Level Output Voltage , DVDD=4.5V (Iout =100µA) VOL2 - - 0.5 V High-Level Output Voltage , DVDD=2.7V (Iout = -100µA) VOH1 DVDD-0.2 - - V Low-Level Output Voltage , DVDD=2.7V (Iout =100µA) VOL1 - - 0.2 V Output Capacitance CO - 5 - pF Load Capacitance CL - - 30 pF
Figure 2. Data Output Timing
analog input signal is expressed by the density of this digital output. below should be connected as close as possible to the device. Figure 3. AK9223 Recommended External Circuits exceeding 86dB with an OSR = 256.
[AK9223] 014010283-E-01 10 2015/01 ■ Internal Operation The analog input of the AK9223 is composed by SC (switched-capacitor) circuits and this modulator block digitizes analog inputs to 1-bit data stream. The clock source can be external or internal oscillator output. Analog input is sampled by the modulator and compared with the reference voltage of the REFI pin. A digital stream that represents the analog input voltage over time appears at the output of the corresponding converter. ■ Modulator The AK9223 can be operated in two modes. Internal oscillation is used for the operation clock of the modulator by setting the SEL pin = “H”. In this case, the internal clock is fixed to 20MHz. When the SEL pin is set to “L”, modulator clock is externally input to the CLKI pin. In both of modes, the clock is internally divided by two and functions as the modulator clock. When using an external clock, available input clock range is from 1MHz to 24MHz. In this case, the modulator operates of a clock from 500kHz to 12MHz. ■ Digital I/F Analog input signals are converted with the modulator input clock. The OUT pin outputs the result of AD conversion. The common clock that is used for two modulators is output from the CLKO pin. When the SEL pin = “H”, the CLKI pin must not be allowed to float but should be connected to DVDD or VSS5.
[AK9223] 014010283-E-01 12 2015/01 System Design ■ Power Supply Digital power supply determines the I/O interface voltage. It ranges from 2.7V to 5.5V. Inputs to the AK9223, such as AIN+, AIN- and CLKI pins should not be present before the power supply is on. ■ Decoupling A decoupling capacitor should be connected to the pin as close as possible. A 0.1μF ceramic capacitor should be connected between AVDD (Pin #1) and VSS1, AVDD (Pin #12) and VSS2, AVDD (Pin #13) and VSS3, AVDD (Pin #24) and VSS4, and DVDD and VSS5. If the analog and digital I/O powers are drawn from the same source, connect a 10Ω resistor between the analog and digital power supply pins, and connect the power source to the analog power supply pin. An RC filter should be composed by this 10Ω resister and a 0.1μF capacitor to reduce noises in the analog supply.
[AK9223] 014010283-E-01 13 2015/01 Package ■ Outline Dimensions 24-pin TSSOP (Unit: mm) 0-8 Detail A 0.10 7.80.1 A 1 12 13 24 6.40.15 0.60.1 4.40.1 0.90.05
1.10 MAX
0.10±0.05
[AK9223] 014010283-E-01 14 2015/01 ■ Marking AK9223MK AAYWWB a. Pin #1 Indication b. Product Name: AK9223MK c. Date Code: AAYWWB AA : Administration Code 2digits Y : Year 1digit WW : Week 2digits B : Administration Code 1digit
[AK9223] 014010283-E-01 15 2015/01 Ordering Guide ■ Ordering Guide AK9223MK 40 +105C 24-pin TSSOP (0.65mm pitch)
Revision History
Date (Y/M/D) Revision Reason Page Contents 15/01/15 01 First Edition
[AK9223] 014010283-E-01 16 2015/01 IMPORTANT NOTICE 0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this document without notice. When you consider any use or application of AKM product stipulated in this document (“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products. 1. All information included in this document are provided only to illustrate the operation and application examples of AKM Products. AKM neither makes warranties or representations with respect to the accur acy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of AKM or any third party with respect to the information in this document. You are fully responsible for use o f such information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS. 2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or seriou s public impact , including but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance -related fields. Do not use Product for the above use unless specifically agreed by AKM in writing. 3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with safety standards and for providing adequate designs and safeguards for your hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. 4. Do not use or otherwise make available the Product or related technology or any information contained in this document for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology pr oducts (mass destruction weapons). When exporting the Products or related technology or any information contained in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. The Products and related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner whatsoever, any liability of AKM. 7. This document may not be reproduced or duplicated, in any form, in whole or in par t, without prior written consent of AKM.