The MICROCHIP TECH. MCP39F521 is a complete single-phase power-monitoring device, designed for real-time measurement of input power for AC/DC power supplies, power distribution units, consumer and industrial applications. It includes dual-channel delta-sigma ADCs, a 16-bit calculation engine, EEPROM and a flexible two-wire I2C interface. An integrated low-drift voltage reference allows for better than 0.1% accurate designs across a 4000:1 dynamic range. It is suitable for power monitoring in home automation, industrial lighting, and AC/DC supplies.