Waveshare Raspberry Pi High-Precision AD/DA Expansion Board


In stock

SKU: 968467
  1. Adds high-precision AD/DA function to Raspberry Pi.
  2. Raspberry Pi 40PIN GPIO extension header
  3. Onboard DAC8552, 2ch 16bit high-precision DAC
  4. Onboard ADS1256, 8ch 24bit high-precision ADC
  5. 30ksps sampling rate


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Category: Raspberry Pi Hats
Tags: Waveshare, High-Precision AD/DA, 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.

What’s on Board

Waveshare Raspberry Pi High-Precision Ad-Da Expansion Board

  1. Raspberry Pi GPIO interface: for connecting with the Pi
  2. AD/DA input/output : screw terminals
  3. AD input: pin headers, 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 the reference voltage for the ADC chip
  6. Photoresistor
  7. LED output indicator
  8. 10K potentiometer
  9. DAC8552 : 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

Useful links:

Interfacing of Waveshare Raspberry Pi High-Precision AD/DA Expansion Board


  1. Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano.
  2. ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate.
  3. DAC8552, 2ch 16bit high-precision DAC.
  4. Input interface via pin headers, for connecting analog signal.
  5. The pinout is compatible with the Waveshare sensor interface standard, easy to connect various analog sensor modules.
  6. Onboard input/output interface via screw terminals, for connecting analog/digital signal.
  7. Features AD/DA detect circuit, easy for signal demonstration.

Package Includes:

1 x High-Precision AD/DA Board

1 x RPi screws pack (2pcs)

Length (mm)


Width (mm)


Height (mm)


Weight (gm)


Shipment Weight

0.04 kg

Shipment Dimensions

7 × 6 × 2 cm

6 Months Warranty

This item is covered with a supplier warranty of 6 months from the time of delivery against manufacturing defects only. This is a quality product from the original manufacturer. Only manufacturing defects are covered under this warranty. Reimbursement or replacement will be done against manufacturing defects.

What voids the warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China