Raspberry Pi High-Precision AD/DA Board
SKU 114990831
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.
Description
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.
Raspberry Pi 1 Model A+
Raspberry Pi 1 Model B+
Raspberry Pi 2 Model B
Raspberry Pi 3 Model B
Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate
Onboard DAC8532, 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
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
Symbol
3.3V
5V
NC
GND
DRDY
RESET
PDWN
CS0
CS1
DIN
DOUT
SCK
GPIO
Pin
1, 17
2, 4
3, 5, 7, 8, 10, 18, 22, 24, 26, 27, 28, 29,
32, 36, 38, 40
6, 9, 14, 20, 25, 30, 34, 39
11
12
13
15
16
19
21
23
31, 33, 35, 37
Description
Power supply (3.3V)
Power supply (5V)
NC
Ground
ADS1256 data ready output, low active
ADS1256 reset input
ADS1256 sync/power off input, low active
ADS1256 chip select, low active
DAC8532 chip select, low active
SPI data input
SPI data output
SPI clock
extend to sensor interface
Raspberry Pi High-Precision AD/DA Board*1
Copyright © 2008-2016 Seeed Development Limited All rights reserved