Raspberry Pi High-Precision AD/DA Board

Note
Want to add AD/DA function to your Raspberry Pi 4? We recommend our Grove Base Hat for Raspberry Pi ($9.90) to you!
Theres no AD/DA function on the Raspberry Pi GPIO interface, this may trouble you in the Pi development. However, it wont 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/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
Symbol Pin Description
3.3V 1, 17 Power supply (3.3V)
5V 2, 4 Power supply (5V)
NC 3, 5, 7, 8, 10, 18, 22, 24, 26, 27, 28, 29, 32, 36, 38, 40 NC
GND 6, 9, 14, 20, 25, 30, 34, 39 Ground
DRDY 11 ADS1256 data ready output, low active
RESET 12 ADS1256 reset input
PDWN 13 ADS1256 sync/power off input, low active
CS0 15
ADS1256 chip select, low active
CS1 16
DAC8532 chip select, low active
DIN 19 SPI data input
DOUT 21 SPI data output
SCK 23 SPI clock
GPIO 31, 33, 35, 37 extend to sensor interface
Raspberry Pi High-Precision AD/DA Board£ª1

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