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.
|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|