ADC Differential Pi – analog / digital converter

Differential ADC Pi is a card 8 channel 18 bit analog-digital converter operating with the Raspberry Pi A +, B + and Raspberry Pi Raspberry Pi 2 and PI 3. L? Pi Differential ADC is based on two Microchip MCP3424 A / D converters each containing four analog inputs. The MCP3424 is a sigma-delta A / D converter with differential inputs.