Internet thinking Electronics Co., Ltd | Sign in | Join
Raspberry Pi High-Precision AD/DA Expansion Board  SKU: HighPrecision AD/DA Board
  |  0 orders
US $30.00 / PCS
-->Arrival time 5-7 days
---->Arrival time 15-27 days, Brazil and Russian Federation must
-->Arrival time 5-7 days
Parts Amount
US $30.00
Within 15 days of the receipt of the goods, if the quality of the goods, the description does not match or did not receive the goods, etc., you have the right to apply for a refund or return, postage back and forth borne by the seller.
RF and microwave
Product Details
Part no.Raspberry Pi High-Precision AD/DA Expansion Board
Date Code16+
DescriptionSKU: High-Precision AD/DA Board
 DatasheetCheck Datasheet





    Raspberry Pi AD/DA Expansion


    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.

    Supported 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

    What's on Board

    RPi expansion board on board resource
    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

    Interface Definition

    Pin Symbol Description
    1, 17 3.3V Power supply (3.3V)
    2, 4 5V Power supply (5V)
    3, 5, 7, 8, 10, 18, 22, 24, 26, 27, 28, 29, 32, 36, 38, 40 NC NC
    6, 9, 14, 20, 25, 30, 34, 39 GND Ground
    11 DRDY ADS1256 data ready output, low active
    12 RESET ADS1256 reset input
    13 PDWN ADS1256 sync/power off input, low active
    15 CS0 ADS1256 chip select, low active
    16 CS1 DAC8532 chip select, low active
    19 DIN SPI data input
    21 DOUT SPI data output
    23 SCK SPI clock
    31, 33, 35, 37 GPIO extend to sensor interface


    RPi expansion board
    High-Precision AD/DA Board back view
    RPi expansion board
    Connecting with RPi A+
    RPi expansion board
    Connecting with RPi2 B
    RPi expansion board
    Connecting with sensors

    Note : the Raspberry Pi and sensors in the photo are NOT included.


    High-Precision AD/DA Board dimension

    Development Resources

    Wiki :

     © 2006-2017 Internet Thinking(Hong Kong) Electronic Co.,Limited(Copyright)