Description

12 Bit I2C ADC breakout with voltage reference

A simple to use, yet versatile ADC breakout with optional voltage reference. (Vref-4.096v, I2C address-A5)

Compatible with breadboards and the Seeed grove connector this unit is easy to use and interface! Unit is based on the proven MCP3221 and MCP1541 pair and is quite compact, it provides a good mix of speed vs precision especially for the price! capable of 28.8Ksps when operating in I2C Fast mode.

Basic Usage

Using the breakout is very easy and the code should be self explanatory! Hook up the breakout board via I2C, add VIN and common ground with both the Arduino(or what ever you are interfacing with) and what ever you will be reading! VCC takes a wide range from 2.7v to 5.5v although above 4.1v the Vref takes over and provides a stable 4.096v as VIN (NOTE: SDA and SCL will be at VCC levels, this is good and bad; Feed VCC with 3.3v and you can hook right up to a raspi or Arduino, feed with 5v and you can only hook up to Arduino)

Various Info
~1mV/Step resolution at VIN > Vref
Wide range of VIN inputs (2.7 to 5.5V)
Easy to use 12bit ADC