ADC Pi Zero

The ADC Pi Zero is an 8 channel 17 bit analogue to digital converter designed to work with the Raspberry Pi Zero. The ADC Pi Zero 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.

The ADC Pi Zero is designed to work as a single ended A/D converter using the internal 2.048V reference voltage with the -V pins tied to ground. A voltage divider on the ADC Pi Zero board brings the input voltage range to a much more useful 0 - 5.06V.

Features

• 8 x 17-bit 0 to 5V Single Ended Inputs
• Control via the Raspberry Pi I2C port
• Stack up to 4 ADC Pi Zero boards on a single Raspberry Pi
• Jumper selectable I2C addresses
• Buffered 5V I2C port
• Based on the MCP3424 from Microchip Technologies Inc
• Single Ended full-scale range of 5.0V
• 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 (17 bits)
     - 15 SPS (15 bits)
     - 60 SPS (13 bits)
     - 240 SPS (11 bits)
• One-Shot or Continuous Conversion Options

Input Ratings & Specifications