ADC Differential Pi

De ADC Differential Pi is een 8 kanaals 18 bit analoog naar digital converter gemaakt om te werken me de Raspberry Pi A+, Raspberry Pi B+, Raspberry Pi 2 Model B en Raspberry Pi Model 3. De ADC Differential Pi is gebaseerd op twee Microchip MCP3424 A/D converters die beiden 4 analoog inputs hebben. De MCP3424 is een delta-sigma A/D converter met low noise differential inputs.

Features

• 8 x 18-bit differential inputs 
• Control via the Raspberry Pi I2C port
• Stack up to 4 ADC Differential Pi boards on a single Raspberry Pi
• Jumper selectable I2C addresses
• Buffered 5V I2C port
• Based on the MCP3424 from Microchip Technologies Inc
• Input range of ±2.048V
• On-board 2.048V reference voltage (Accuracy  ± 0.05%, Drift: 15 ppm/°C)
• On-Board Programmable Gain Amplifier (PGA): Gains of 1, 2, 4 or 8
• Programmable Data Rate Options:
     - 3.75 SPS (18 bits)
     - 15 SPS (16 bits)
     - 60 SPS (14 bits)
     - 240 SPS (12 bits)
• One-Shot or Continuous Conversion Options

Maxiumum Ratings & Specificaties

• Vdd (5V pin on I2C bus): 5.0V
• All AD inputs and outputs: VSS–0.4V to VDD+0.4 V
• Current at Input Pins: ±2 mA
• I2C SDA/SCL voltage: 5.0 V
• I2C port current: 100 mA

Check out the product page at AB Electronics for more information and I2C addressing

Sample Code

AB Electronics have Arduino, C, Windows 10 IOT, Python 2 and Python 3 libraries available for this expansion board.  You can download all of the libraries from github at:

https://github.com/abelectronicsuk/

Download the Arduino libraries from: https://github.com/abelectronicsuk/ABElectronics_Arduino_Libraries

To download the C libraries to your Raspberry Pi type in terminal:

git clone https://github.com/abelectronicsuk/ABElectronics_C_Libraries.git

To download the Python 2 libraries to your Raspberry Pi type in terminal:

git clone https://github.com/abelectronicsuk/ABElectronics_Python_Libraries.git

To download the Python 3 libraries to your Raspberry Pi type in terminal:

git clone https://github.com/abelectronicsuk/ABElectronics_Python3_Libraries.git

Download the Windows 10 IOT libraries from: https://github.com/abelectronicsuk/ABElectronics_Win10IOT_Libraries/

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