ADC Differential Pi

The ADC Differential Pi is an 8-channel 18-bit analogue to digital converter designed to work with the Raspberry Pi and other compatible single-board computers. The ADC Differential Pi is based on two Microchip MCP3424 A/D converters, each containing 4 analogue inputs. The MCP3424 is a delta-sigma A/D converter with 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 (8 choices)
• 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

Python, MicroPython, C, C++, Node.js and .Net Core libraries are available on GitHub.

Details Made by AB Electronics UK pHAT form-factor Needs 5v and 3v3 power Uses 2 GPIO pins Communication over I2C 0x68: MCP3424 (Alt: 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F) 0x69: MCP3424 (Alt: 0x68, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F) More Information GitHub Repository Schematic Buy Now