Waveshare Raspberry Pi High-Precision AD/DA Expansion Board

The Raspberry Pi GPIO interface lacks AD/DA functionality, which can be a limitation in some development projects. However, the High-Precision AD/DA Board solves this problem by enabling you to add high-precision analog-to-digital (AD) and digital-to-analog (DA) functions to your Raspberry Pi.

What’s on 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

Package Includes:

1 x High-Precision AD/DA Board

1 x RPi screws pack (2pcs)