AMC1311BQDWVQ1

Overview

The AMC1311BQDWVQ1 is a single-channel, high-impedance, precision isolated amplifier designed for automotive applications. It features a 2-V input range and a fixed gain of 1 V/V with a 220 kHz bandwidth. The device provides galvanic isolation with an insulation voltage of 5000 Vrms and operates on a supply voltage between 3 V and 5.5 V. Key electrical characteristics include a maximum input offset voltage of 1.5 mV, a gain error of 0.04%, and a power supply rejection ratio of -65 dB. It functions within a temperature range of -40°C to +125°C and is housed in an SOIC-8 package.

Feature Summary

• Provides reinforced galvanic isolation to separate system modules operating at different common-mode voltage levels.
• Features a high-impedance input optimized for connecting high-impedance resistive dividers or voltage signal sources.
• Delivers a single-ended output proportional to the input voltage, designed for direct connection to analog-to-digital converters.

Applications

• Motor drives
• Photovoltaic inverters
• Server power units (PSU)
• Hybrid electric vehicles
• EV charging stations

Procurement Notes

Verify that the specific part number suffix matches the required packaging configuration, as variants exist in tubes and reels. Confirm AEC-Q100 qualification status is explicitly stated for the target automotive application environment. Ensure the design accounts for the specified humidity sensitivity classification during storage and assembly processes.

Selection Notes

Select this component when a 2-V input range and 1 V/V gain are required for precise signal isolation. The low input offset voltage of 1.5 mV makes it suitable for high-accuracy measurements. Consider the SOIC-8 package dimensions and the 5000 Vrms isolation rating against the system's safety requirements and thermal dissipation limits.

Part Context

This device belongs to the AMC1311 family of high-impedance isolated amplifiers from Texas Instruments. It shares core specifications with the AMC1311BQDWVRQ1 but differs in packaging format. The series is engineered to provide robust isolation barriers while maintaining high linearity and low DC errors for critical sensing applications.

Replacement Considerations

AMC1311BQDWVRQ1