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MCP39F521
  • MCP39F521

MCP39F521

In Production

The MCP39F521 is a highly integrated, single-phase power-monitoring IC designed for real-time measurement of input power for AC/DC power supplies, providing power and energy values. It includes dual-channel delta sigma ADCs, a 16-bit calculation engine, EEPROM and a flexible 2-wire interface. An integrated low-drift voltage reference in addition to the 94.5 dB of SINAD performance on each measurement channel allows for better than 0.1% accurate designs across a 4000:1 dynamic range.

Microchip Technology MCP39F521 Product Info

16 April 2026 0

Parameters

Resolution

24

Sample Rate kSPS Max

0.0125

Input Channels Differential

2

SNR typ

95

SFDRTyp

111

ENOB

15.4

INL Typ LSB

1

Features

  • Power Monitoring Accuracy capable of 0.1% error across 4000:1 dynamic range
  • Active, Reactive, Apparent Power
  • Active and Reactive Energy Accumulation
  • True RMS Current, RMS Voltage
  • Line Frequency, Power Factor
  • Dedicated Zero Crossing Detection (ZCD) Pin 
  • Dedicated PWM Output Pin
  • Automatic Event Pin Control through Fast Voltage Surge Detection
  • Fast Calibration Routines
  • I2C Interface
  • 512 bytes User-accessible EEPROM through page read/write commands
  • Non-volatile On-chip Memory, no external memory required
  • Low-Drift Internal Voltage Reference: 10 ppm/°C typical
  • 28-lead 5x5 QFN package
  • Extended Temperature Range -40°C to +125°C
  • AEC-Q100 Grade 1

Description

The MCP39F521 is a highly integrated, single-phase power-monitoring IC designed for real-time measurement of input power for AC/DC power supplies, providing power and energy values. It includes dual-channel delta sigma ADCs, a 16-bit calculation engine, EEPROM and a flexible 2-wire interface. An integrated low-drift voltage reference in addition to the 94.5 dB of SINAD performance on each measurement channel allows for better than 0.1% accurate designs across a 4000:1 dynamic range.

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