If you"re looking to interface analog signals with digital systems then MCP3422A1-E/SN 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 minimum operating temperature of -40 °C and a maximum of 125 °C. This device uses analog and digital power. It has 2 channels per chip.