MCP3201 A/D Converters Microchip Technology MCP3201 A/D Converters are 12-bit Analog-to-Digital (A/D) converters with onboard sample and hold-circuitry. These converters offer a single pseudo-differential input, and communication is done using a simple serial interface compatible with SPI protocol. The MCP3201 converters feature a 2.7V to 5.5V supply voltage range, 500nA, and 300nA active currents. These A/D converters come in 8-pin MSOP, PDIP, TSSOP, and 150mil SOIC packages. Typical applications include sensor interface, process control, data acquisition, and battery-operated systems.