Overview

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.

Features

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
• Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate
• Onboard DAC8552, 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.     47.68M crystal
5.     LM285-2.5 : provides reference voltage for the ADC chip
6.     Photo resistor
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