Raspberry Pi High-Precision AD/DA Board

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There's no AD/DA function on the Raspberry Pi GPIO interface, this may trouble you in the Pi development. However, it won't be a problem anymore. The High-Precision AD/DA Board allows you to add high-precision AD/DA functions to the Raspberry Pi.


Raspberry Pi 1 Model A+

Raspberry Pi 1 Model B+

Raspberry Pi 2 Model B

Raspberry Pi 3 Model B


  • Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate

  • Onboard DAC8532, 2ch 16bit high-precision DAC

  • Onboard input interface via pinheaders, for connecting analog signal, the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules

  • Onboard input/output interface via screw terminals, for connecting analog/digital signal

  • Features AD/DA detect circuit, easy for signal demonstration



1. Raspberry Pi GPIO interface: for connecting with the Pi

2. AD/DA input/output: screw terminals

3. AD input: pinheaders, the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules

4. 7.68M crystal

5. LM285-2.5: provides reference voltage for the ADC chip

6. Photo resistor

7. LED output indicator

8. 10K potentiometer

9. DAC8532: 16bit high-precision DAC, 2ch

10. Power indicator

11. ADS1256: 24bit high-precision ADC, 8ch (4ch differential input)

12. ADC testing jumper

13. DAC testing jumper

14. Power selection jumper

15. ADC reference ground configuration: when AD single inputted, the AINCOM is reference terminal, can be connected to GND or external reference voltage


3.3V1, 17Power supply (3.3V)
5V2, 4Power supply (5V)
NC3, 5, 7, 8, 10, 18, 22, 24, 26, 27, 28, 29, 32, 36, 38, 40NC
GND6, 9, 14, 20, 25, 30, 34, 39Ground
DRDY11ADS1256 data ready output, low active
RESET12ADS1256 reset input
PDWN13ADS1256 sync/power off input, low active

ADS1256 chip select, low active


DAC8532 chip select, low active

DIN19SPI data input
DOUT21SPI data output
SCK23SPI clock
GPIO31, 33, 35, 37extend to sensor interface




Raspberry Pi High-Precision AD/DA Board*1

Technical details

Dimensions 110mm x80mm x30mm
Weight G.W 37g
Battery Exclude


HSCODE 8517709000
USHSCODE 8517700000

Raspberry Pi High-Precision AD/DA Board

This is the wiki page for this product, which will show you how to use the product, as well as details about the software and hardware.

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  • Question by: admin on 2018-12-18 02:19:42

    Hi, there~ the voltage range is about 0~5V, and the different range will effect the precision, you can check the datasheet of ads1256, Regards!

    Answer by: admin on 2018-12-18 02:19:42