Raspberry Pi High-Precision AD/DA Expansion Board

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 pin headers, 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 signals Features AD/DA detect circuit, easy for signal demonstration Raspberry Pi GPIO interface : for connecting with the Pi AD/DA input/output : screw terminals AD input : pinheaders, the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules 47.68M crystal LM285-2.5 : provides reference voltage for the ADC chip Photoresistor LED output indicator 10K potentiometer DAC8552 : 16bit high-precision DAC, 2ch Power indicator ADS1256 : 24bit high-precision ADC, 8ch (4ch differential input) ADC testing jumper DAC testing jumper Power selection jumper ADC reference ground configuration : when AD single inputted, the AINCOM is reference terminal, can be connected to GND or external reference voltage