AMC1411QDWLRQ1

Overview

The AMC1411QDWLRQ1 is an automotive-grade, precision isolated amplifier featuring a high-impedance input optimized for voltage measurements. It provides a fixed gain of 1 V/V and operates on 3.3-V or 5-V supplies on both sides. The device utilizes a capacitive isolation barrier certified for reinforced isolation up to 7.5 kVrms and supports working voltages up to 1600 VRMS. Key electrical characteristics include a maximum offset error of ±1.5 mV, a bandwidth of 220 kHz, and a minimum common-mode transient immunity of 100 kV/μs.

Feature Summary

• High-impedance analog input stage designed for direct connection to resistive dividers
• Reinforced galvanic isolation barrier with high magnetic field immunity
• Integrated missing high-side supply detection feature
• Functional safety capability with documentation support

Applications

• Isolated voltage sensing in traction inverters
• Voltage monitoring in onboard chargers
• Isolation in DC/DC converters
• Voltage sensing in HEV/EV DC chargers

Procurement Notes

Verify the specific suffix 'RQ1' against official Texas Instruments documentation to confirm package type and reel specifications. Ensure the component meets AEC-Q100 Grade 1 requirements for the target operating temperature range. Confirm that the design adheres to the safety limiting values for current and power dissipation to maintain isolation integrity.

Selection Notes

Select this component when a single-ended, high-impedance input is required for isolated voltage measurement. The fixed 1 V/V gain simplifies system design by eliminating external gain-setting components. Verify that the application's common-mode voltage levels remain within the specified insulation ratings and that the 2-V input full-scale range accommodates the signal source.

Part Context

This part belongs to the AMC1411-Q1 family of reinforced isolated amplifiers from Texas Instruments. It is specifically engineered for automotive environments requiring high reliability and functional safety compliance. The device integrates a delta-sigma modulator and analog filter to provide accurate signal transmission across the isolation barrier.

Replacement Considerations

Consult the official datasheet orderable addendum for qualified alternative packages or pin-compatible variants within the same product family.