AMC1311BDWV

Overview

The AMC1311BDWV is a precision isolated amplifier from Texas Instruments designed for high-impedance voltage sensing applications. It features a 2-V input range and provides galvanic isolation via a reinforced capacitive barrier certified to UL1577 and VDE standards with 5000 Vrms isolation voltage. The device operates on a single supply between 3 V and 5.5 V, consuming 7.1 mA of quiescent current. Key electrical specifications include a 275 kHz 3-dB bandwidth, 15 nA input bias current, and 1.5 mV maximum input offset voltage. It offers a fixed gain of 1 V/V with 0.04% gain error and supports output currents up to 13 mA per channel within an extended industrial temperature range of -55°C to +125°C.

Feature Summary

• Reinforced galvanic isolation barrier certified for safety compliance
• Optimized high-impedance input suitable for resistive dividers
• Integrated high-side power supply undervoltage detection
• Extended industrial temperature rating for harsh environments

Applications

• Precision voltage monitoring in industrial automation systems
• Current sensing in motor drives and inverters
• Isolated measurement in renewable energy inverters
• High-voltage battery management system diagnostics

Procurement Notes

Verify the specific suffix (DWV) indicates tube packaging when ordering discrete units. Confirm RoHS compliance status through official documentation as required by regional regulations. Ensure ESD handling protocols are followed during assembly due to moisture sensitivity classification. Cross-reference the datasheet revision date to ensure compatibility with existing design files and application notes.

Selection Notes

Select this component when a fixed unity gain configuration is required for isolating low-level voltage signals. The 2-V input window necessitates external attenuation for higher voltage sources. Compare against the automotive-grade AMC1311QDWVQ1 if AEC-Q100 qualification is mandatory. Consider the AMC1311BDWVR variant for reel-based automated surface-mount assembly processes instead of manual tube placement.

Part Context

This device belongs to the AMC1311 family of precision isolated amplifiers. It utilizes Texas Instruments' CIMAX technology to provide robust signal transmission across the isolation barrier. The family includes variants optimized for different temperature ranges and packaging formats, all sharing the core architecture of a modulator-demodulator interface for high accuracy.

Replacement Considerations

AMC1311BDWVR serves as the tape-and-reel equivalent for automated manufacturing. For automotive applications requiring AEC-Q100 certification, the AMC1311QDWVQ1 is the qualified alternative.