High-Precision AD-DA User Manual
2
Revision: 1.2. Date: October 30 2015. Author: Zhou Jie. Editor: Felix
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What's on Board
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.
7.68M crystal
5.
LM285-2.5:
provides reference voltage for the ADC chip
6.
Photo resistor
7.
LED output indicator
8.
10K potentiometer
9.
DAC8532:
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
