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Brand
:
WaveShare
Product Code
:
15985
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Through this board, you can add 24-bit resolution 8 channel ADC(analog-digital converter) and 16-bit resolution 2 channel DAC(digital-analog converter) to your Raspberry Pi. This shield can be used smoothly with all models of Raspberry Pi, which have 40 pin connector(A+, B+, Pi 2, Pi Zero and Pi3).
1-Raspberry Pi GPIO connection interface
2-AD/DA ,nput/output clip connections
3-AD input: Comptaible with Waveshare sensors
4-7.68M crystal
5-LM285-2.5: Ensures reference voltage for ADC IC
6-LDR (photoresistor)
7-Output state LED's
8-10k potantiometer
9-DAC8532: 16-bit 2 channel DAC IC
10-Power state indicator LED
11-ADS1256: 24-bit 8 channel (4 differential) ADC IC
12-ADC test jumpers
13-DAC test jumpers
14-Power selection jumpers
15-ADC reference connection: Can be connected to GND or an external reference voltage.
| Pin | Symbol | Description |
|---|---|---|
| 1, 17 | 3.3V | Power supply (3.3V) |
| 2, 4 | 5V | Power supply (5V) |
| 3, 5, 7, 8, 10, 18, 22, 24, 26, 27, 28, 29, 32, 36, 38, 40 | NC | NC |
| 6, 9, 14, 20, 25, 30, 34, 39 | GND | Ground |
| 11 | DRDY | ADS1256 data ready output, low active |
| 12 | RESET | ADS1256 reset input |
| 13 | PDWN | ADS1256 sync/power off input, low active |
| 15 | CS0 | ADS1256 chip select, low active |
| 16 | CS1 | DAC8532 chip select, low active |
| 19 | DIN | SPI data input |
| 21 | DOUT | SPI data output |
| 23 | SCK | SPI clock |
| 31, 33, 35, 37 | GPIO | extend to sensor interface |
27-04.06.2016
