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Green rectangular circuit board with 40-pin header and rows of pinheaders

WaveShare

WaveShare High-Precision AD/DA Expansion Board development board ADS1256 8-CH 24bit ADC DAC8532 2-CH 16bit DAC

SKU CH-XYAD-0TRQ4

Adds 8-channel 24-bit ADC and 2-channel 16-bit DAC to Raspberry Pi or Jetson Nano via 40-pin GPIO header

  • CPU TypeOther
  • Adds high-precision analog I/O to Raspberry Pi
  • 8-channel 24-bit ADC with 30 ksps sampling rate
  • 2-channel 16-bit DAC for accurate voltage output
  • Standard 40-pin header fits Pi boards and Jetson Nano
  • Pin-header input compatible with Waveshare sensor standard

High-Precision AD/DA Expansion Board

This WaveShare board adds analogue-to-digital and digital-to-analogue conversion to Raspberry Pi models and Jetson Nano. It uses the standard 40-pin GPIO header for a direct connection. The board is designed for developers who need precise signal acquisition and output in their projects.

For sensor integration and signal generation

Engineers building data-acquisition systems, instrumentation or control loops will benefit from the eight-channel 24-bit ADC and two-channel 16-bit DAC. The 30 ksps sampling rate suits many measurement tasks. Builders who require more than two analogue outputs or a higher channel count should consider alternative solutions.

Fits a standard 40-pin header

The expansion board plugs straight onto the GPIO header of compatible Raspberry Pi and Jetson Nano boards, leaving other pins accessible for additional modules. Onboard pin headers follow the Waveshare sensor interface standard for straightforward analogue sensor wiring. This layout keeps the rest of the GPIO free for other peripherals.

Highlights

  • Adds high-precision analog I/O to Raspberry Pi
  • 8-channel 24-bit ADC with 30 ksps sampling rate
  • 2-channel 16-bit DAC for accurate voltage output
  • Standard 40-pin header fits Pi boards and Jetson Nano
  • Pin-header input compatible with Waveshare sensor standard

Specifications

CPU TypeOther

Questions about this item

Which host boards does this expansion board plug into directly?

The board uses a standard 40PIN GPIO extension header that fits Raspberry Pi 4B, 3B+, 3B, 2B, Zero, Zero W, Zero WH and Jetson Nano.

Can I keep my existing Waveshare sensor modules when adding this board?

Yes, the input pinheaders follow the Waveshare sensor interface standard so current analog sensor modules connect without adapters.

How do I verify the ADC and DAC are operating at their rated precision after wiring?

The ADS1256 provides 8 channels at 24bit resolution with 30ksps sampling, while the DAC8532 delivers 2 channels at 16bit; measure a known reference voltage on the ADC and compare the DAC output with a calibrated meter to confirm both meet those specifications.

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