MCP39F511-E/MQ

Overview

The MCP39F511-E/MQ is a single-phase power monitoring IC designed for real-time measurement of current and voltage. It features dual 24-bit Delta-Sigma ADCs for current sensing and a 10-bit SAR ADC for voltage acquisition. The device integrates a 16-bit calculation engine, EEPROM, and a flexible two-wire interface. It operates within a supply voltage range of 2.7 V to 3.6 V, consuming 13 mA of operating current. Accuracy is specified at 0.1%, with a dynamic range of 4000:1 and SINAD performance of 94.5 dB per channel. It supports an operating temperature range from -40°C to +125°C and is housed in a QFN-28 package.

Feature Summary

• Integrates dual high-resolution Delta-Sigma ADCs for precise current measurement alongside a dedicated SAR ADC for voltage sensing.
• Includes an embedded 16-bit calculation engine for real-time power parameter computation and energy accumulation.
• Features a low-drift integrated voltage reference (10 ppm/°C) to ensure stable accuracy across the operating temperature range.
• Provides non-volatile storage via onboard EEPROM and utilizes a flexible two-wire serial interface for communication.

Applications

• Real-time measurement for dual-socket wall outlets
• Input power monitoring for consumer electronics power boards
• Industrial application input power tracking

Procurement Notes

Verify the specific suffix 'E/MQ' corresponds to the industrial temperature grade (-40°C to +125°C) and QFN-28 package configuration. Confirm AEC-Q100 qualification status if automotive compliance is required. Ensure the ordering part number matches the exact tape-and-reel packaging specification provided by Microchip Technology. Cross-reference the datasheet revision date to confirm pinout and electrical characteristics alignment with your design requirements.

Selection Notes

Select this component when single-phase monitoring with high precision is required in space-constrained designs. The QFN-28 package offers a compact footprint suitable for dense PCB layouts. The integrated calculation engine reduces host processor load by handling complex power metrics internally. Consider the 13 mA supply current for battery life calculations in portable or low-power applications. Verify that the 2.7 V to 3.6 V supply range aligns with the system's available voltage rails.

Part Context

This device belongs to Microchip's family of power monitoring ICs, specifically engineered for accurate energy measurement in single-phase systems. It combines analog front-end capabilities with digital signal processing to deliver reliable data for billing, protection, and efficiency analysis. The integration of ADCs and a calculation engine simplifies system architecture by minimizing external components.

FAQ

What is the dynamic range of the current measurement channels?

The device achieves a dynamic range of 4000:1 with SINAD performance of 94.5 dB per channel.

How does the device handle voltage referencing?

It includes an integrated low-drift voltage reference with a temperature coefficient of 10 ppm/°C to maintain accuracy.