If you"re looking to interface analog signals with digital systems then MCP3422A3-E/MS analog front end from Microchip Technology is an easy solution. This AFE has a resolution of 18 bit. This device"s minimum operating supply voltage of 2.7 V, while its maximum is 5.5 V. This AFE has a temperature range of -40 °C to 125 °C. It has 2 channels per chip. This device uses analog and digital power.