The ADC DAC Pi Zero is a 2channel 12bit analoguetodigital converter and a 2channel 12bit digitaltoanalogue converter designed to work with the Raspberry Pi and other compatible singleboard computers. Designed for the same footprint as the Raspberry Pi Zero, the ADC DAC Pi Zero is also compatible with fullsize Raspberry Pi models.
The ADC DAC Pi Zero is based on the Microchip MCP3202 A/D converter containing 2 analogue inputs with a 12bit resolution and a Microchip MCP4822 dual channel 12bit DAC with internal voltage reference.
Power to the board is provided through the host Raspberry Pi using the GPIO port. Only one ADC DAC Pi Zero can be used on a Raspberry Pi, but the extended pins on the GPIO connector allow you to stack the ADC DAC Pi Zero along with other expansion boards. Using our mounting kit, you can securely fit the board on your Raspberry Pi. As the ADC DAC Pi Zero uses the same footprint as the Raspberry Pi Zero, only two mounting holes can be used on the larger Raspberry Pi models.
The A/D and D/A converters communicate with the Raspberry Pi through the SPI interface.
Max ADC Sample Rate using Python library on a Pi 4: 11,000 samples per second.
Max ADC Sample Rate using C library on a Pi 4: 17,500 samples per second.
Max ADC Sample Rate using C++ library on a Pi 4: 17,500 samples per second.
Max ADC Sample Rate (based on MCP3202 datasheet): 50,000 SPS at 2.7V. 100,000 sps at 5V. ADCDAC Pi operates at 3.3V on Raspberry Pi.
The ADC DAC Pi Zero is compatible with all Raspberry Pi models from the A+ and B+ onwards.
Not sure which ADC you need? Check our Analogue to Digital Buyers guide to compare our ADC expansion boards.
Code Libraries and Demos
We have Python, MicroPython, C, C++, Node.js and Windows 10 IOT libraries for this expansion board. You can download all of the libraries from GitHub at:
https://github.com/abelectronicsuk/ or click on the logos below for your selected programming language.
Compatibility
We have tested the ADC DAC Pi Zero on the following platforms.
Model 
Status 
Raspberry Pi Pico series 

Raspberry Pi Model A / B 

Raspberry Pi 1 Model A+ / B+ 

Raspberry Pi 2 Model B 

Raspberry Pi 3 Model A+ / B / B+ 

Raspberry Pi 4 Model B 

Raspberry Pi 5 

Raspberry Pi Zero 

Raspberry Pi Zero W / Zero 2 W 

Raspberry Pi Compute Module 4 IO Board 

Raspberry Pi 400 

Asus Tinker Board 
