71M6113-IL/F

Overview

The 71M6113-IL/F is an isolated sensor IC designed for Teridian’s fourth-generation polyphase metering systems-on-chips. It features a 22-bit delta-sigma ADC, a differential amplifier, and a precision voltage reference. The device provides isolation via low-cost pulse transformers, enabling the use of non-isolating sensors like resistive shunts without costly isolation transformers or current transformers.

Feature Summary

• Provides galvanic isolation between the metering SoC and sensing elements using bidirectional digital communication through pulse transformers.
• Integrates a 22-bit delta-sigma analog-to-digital converter with a differential input amplifier for high-resolution signal acquisition.
• Includes an on-chip temperature sensor to enable localized digital temperature compensation by the host system-on-chip.
• Operates with typical power consumption of 3.3mW, powered by energy pulses transmitted from the host SoC.

Applications

• Single-phase and polyphase energy metering systems
• Applications requiring immunity to magnetic tampering
• Systems utilizing resistive shunt sensors for current measurement

Procurement Notes

Verify the specific suffix (e.g., -IL/F) against the manufacturer's official datasheet to confirm package type and temperature range compatibility. Ensure the host system supports the required pulse-based power delivery protocol. Confirm RoHS compliance status through official documentation before integration.

Selection Notes

Select this component when designing systems that require cost-effective isolation for shunt-based measurements. It is suitable for applications needing high accuracy over wide dynamic ranges while minimizing bill-of-materials costs associated with traditional isolation methods.

Part Context

This part belongs to the 71M6xxx family of isolated sensor ICs developed by Maxim Integrated. These devices are engineered to interface with Teridian’s 71M654x series metering SoCs, replacing complex isolation hardware with integrated digital solutions.

Replacement Considerations

Compatible substitutes within the same family include the 71M6103, 71M6201, 71M6203, 71M6601, and 71M6603. Verify pinout and feature parity with the official datasheet before substitution.

FAQ

How does the 71M6113 achieve isolation?

It uses low-cost pulse transformers to form a bidirectional digital communication link with the host SoC, eliminating the need for linear isolation components.

What is the resolution of the internal ADC?

The device contains a 22-bit delta-sigma analog-to-digital converter.