LTC2947IUFE

Overview

The LTC2947IUFE is a high-accuracy power and energy monitor manufactured by Analog Devices Inc. It features an integrated precision sense resistor, enabling direct measurement of current without external shunt components. The device supports both SPI/Digital Isolator and I2C interfaces for data communication. Designed for robust industrial applications, it operates within a supply voltage range of 3V to 5.5V and withstands input voltages up to 80V. The component provides comprehensive monitoring capabilities including voltage, current, power, and accumulated energy.

Feature Summary

• Integrated precision sense resistor eliminates the need for external current-sensing components
• Supports dual interface protocols including SPI with digital isolator compatibility and standard I2C
• Provides simultaneous measurement of voltage, current, instantaneous power, and accumulated energy
• High common-mode voltage tolerance allows safe operation in high-side or low-side configurations

Applications

• Industrial motor drives and servo systems requiring precise current monitoring
• Battery management systems for accurate state-of-charge estimation
• Power distribution units (PDUs) in telecommunications infrastructure
• Automotive charging systems and electric vehicle power electronics

Procurement Notes

Verify the specific suffix and package variant against the official Analog Devices datasheet to ensure compatibility with your system requirements. Confirm interface protocol support and operating temperature range matches your design specifications. Check for any recent product lifecycle notices or obsolescence warnings directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when high accuracy and integrated sensing are required to reduce bill of materials complexity. Consider the available interface options based on your microcontroller's communication capabilities. Ensure the input voltage range and common-mode rejection specifications align with your system's electrical environment and safety isolation requirements.

Part Context

The LTC2947 belongs to Analog Devices' family of advanced power monitors designed for demanding industrial and automotive applications. It integrates signal conditioning, analog-to-digital conversion, and digital processing into a single compact package. This integration simplifies design while maintaining high precision across wide dynamic ranges.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.