Raspberry Pi High-Precision AD/DA Expansion Board
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Overview
There's no AD/DA function on the Raspberry Pi GPIO interface, this may troubled 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.
Supported Pi
- Raspberry Pi 1 Model A+
- Raspberry Pi 1 Model B+
- Raspberry Pi 2 Model B
Features
- 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
What's on Board
- 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
- 7.68M crystal
- LM285-2.5 : provides reference voltage for the ADC chip
- Photo resistor
- 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
Interface Definition
Note : the Raspberry Pi and sensors in the photo are NOT included.
Dimension
Development Resources
Wiki : www.waveshare.com/wiki/High-Precision_AD/DA_Board
PACKAGE CONTENT
- High-Precision AD/DA Board x 1
- RPi screws pack (2pcs) x 1
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