Waveshare Raspberry Pi High-Precision AD/DA Expansion Board

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. What's on Board Raspberry Pi GPIO interface: for connecting with the Pi AD/DA input/output : screw terminals AD input: pin headers, the pinout is compatible with Waveshare sensor interface standard, easy to connect various analog sensor modules 7.68M crystal LM285-2.5: provides the 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 Useful links: Interfacing of Waveshare Raspberry Pi High-Precision AD/DA Expansion Board Features: Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano. ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate. DAC8552, 2ch 16bit high-precision DAC. Input interface via pin headers, for connecting analog signal. The pinout is compatible with the 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. Package Includes: 1 x High-Precision AD/DA Board1 x RPi screws pack (2pcs)

Specifications

Item Type:	Other Board
Board Type:	Expansion Board
Length (mm):	65
Width (mm):	56.2
Weight (g):	32
Shipping Weight	0.04 kg
Shipping Dimensions	7 × 6 × 2 cm