Raspberry Pi High-Precision AD / DA Expansion Board
157,60 €
- Description
- Product information
- Interface
Description
Overview
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.
- Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards, Jetson Nano
- Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate
- Onboard DAC8552, 2ch 16bit high-precision DAC
- Onboard input interface via pin headers, 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 indicators
- 10K potentiometer
- DAC8552: 16bit high-precision DAC, 2ch
- Power indicators
- ADS1256: 24bit high-precision ADC, 8ch (4ch differential input)
- ADC testing jumpers
- DAC testing jumpers
- 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
Resources
Datasheets
Application Notes
Product information
BRAND | wave share |
---|
Interface Definition
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 input reset |
13 | PDW extension | ADS1256 sync / power off input, low active |
15 | CS0 | ADS1256 chip select, low active |
16 | CS1 | DAC8552 chip select, low active |
19 | DIN | SPI data input |
21 | DOUT | SPI data output |
23 | SCK pins can be used | SPI clocks |
31, 33, 35, 37 | GPIO | extend to sensor interface |