Microchip Technology MCP39F511T-E/MQ

Description
The MCP39F511 is a single-phase power-monitoring IC designed for real-time measurement of input power in AC/DC power supplies, power distribution units, and other applications. It features dual-channel Delta-Sigma ADCs, a 16-bit calculation engine, EEPROM, and a flexible 2-wire interface. The integrated low-drift voltage reference and high SINAD performance enable accurate designs across a wide dynamic range.

Features
Power monitoring accuracy of 0.1% across a 4000:1 dynamic range
Built-in calculations for active, reactive, apparent power, true RMS current, RMS voltage, line frequency, and power factor
64-bit wide import and export active energy accumulation registers
64-bit four-quadrant reactive energy accumulation registers
Signed active and reactive power outputs
Dedicated zero crossing detection (ZCD) pin output with less than 200 μs latency
Dedicated PWM output pin with programmable frequency and duty cycle
Automatic event pin control through fast voltage surge detection
Two-wire serial protocol with selectable baud rate up to 115.2 kbps
Four independent registers for minimum and maximum output quantity tracking
Fast calibration routines and simplified command protocol
512 bytes user-accessible EEPROM
Low-drift internal voltage reference (10 ppm/°C typical)
28-lead 5x5 QFN package
Extended temperature range (-40°C to 125°C)

Applications
Power monitoring for home automation
Industrial lighting power monitoring
Real-time measurement of input power for AC/DC supplies
Intelligent power distribution units