71M6603-ILR/F

Overview

The 71M6603-ILR/F is an isolated sensor integrated circuit designed for use with Teridian’s fourth-generation polyphase metering systems-on-chips. It features a 22-bit delta-sigma analog-to-digital converter, a differential input amplifier, and a precision voltage reference. The device enables the use of non-isolating sensors like resistive shunts by providing isolation via low-cost pulse transformers. It operates within an industrial temperature range and includes an on-chip temperature sensor for digital compensation.

Feature Summary

• Provides galvanic isolation between the metering SoC and current sensors using bidirectional digital communication through pulse transformers.
• Integrates a high-resolution 22-bit delta-sigma ADC for precise signal acquisition.
• Includes an on-chip temperature sensor to enable localized digital temperature compensation.
• Operates from power pulses transmitted through the isolation barrier, eliminating the need for local power supplies.

Applications

• Single-phase energy metering systems
• Polyphase energy metering applications
• Smart grid infrastructure monitoring

Procurement Notes

Verify the specific suffix ILR/F against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with the target 71M654x series system-on-chip. Confirm that the required isolation voltage levels meet the application safety standards. Check for any obsolescence notices or lifecycle status updates directly from Analog Devices.

Selection Notes

Select this component when cost-effective isolation is required without using bulky magnetic transformers. It is suitable for designs utilizing resistive shunts as low as 50µΩ. Consider the 22-bit resolution and accuracy over a wide dynamic range for high-precision metering requirements. Verify thermal management needs given the typical consumption characteristics.

Part Context

This part belongs to the 71M6xxx family of isolated sensor ICs developed by Maxim Integrated (now Analog Devices). These devices are specifically engineered to interface with the 71M654x metering SoCs. They replace traditional isolation methods to reduce bill-of-materials costs and improve reliability in metering applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices for direct replacements or updated versions within the 71M6xxx family.