Raspberry Pi AD/DA Expansion Board is designed for Raspberry Pi and Jetson nano.. Onboard ADS1256 chip, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate. Onboard DAC8552 chip, 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