AMC1311BDWVR

Overview

The AMC1311BDWVR is a precision isolated amplifier from Texas Instruments designed for high-accuracy voltage sensing applications. It features a single channel with galvanic isolation rated at 5000 Vrms. The device operates within a supply voltage range of 3 V to 5.5 V and consumes 7.1 mA of operating current. Key electrical specifications include a 275 kHz 3dB bandwidth, an input bias current of 15 nA, and an input offset voltage of 1.5 mV. It provides a gain error of 0.04% and a power supply rejection ratio (PSRR) of -65 dB. The output can source up to 13 mA per channel, with a maximum power dissipation of 56.16 mW. It supports shutdown functionality and functions reliably across an operating temperature range of -55°C to +125°C.

Feature Summary

• Provides galvanic isolation with a 5000 Vrms rating for safe signal transmission between isolated domains.
• Delivers precision performance with low input offset voltage and minimal gain error for accurate voltage sensing.
• Integrates a shutdown pin to reduce power consumption when the device is not in active use.

Applications

• Precision voltage sensing in industrial automation systems
• Current sensing in motor control drives
• Power monitoring in renewable energy inverters

Procurement Notes

Verify the specific suffix 'G4' if RoHS compliance or lead-free status is required, as the base part number may differ in environmental certification. Confirm package availability, as this model is supplied in a reel format. Check for moisture sensitivity levels and storage requirements prior to assembly. Ensure the ordering quantity aligns with the factory packaging quantity of 1000 units for tape-and-reel delivery. Validate that the selected variant matches the exact insulation voltage and bandwidth requirements of the target design.

Selection Notes

Select this component when high common-mode transient immunity and precise DC accuracy are critical. Compare against other AMC131x variants based on required bandwidth and isolation voltage ratings. Consider the SOIC-8 package constraints for PCB layout and thermal management. Evaluate the 3 V to 5.5 V supply range compatibility with the system's available power rails. Assess the need for shutdown functionality versus continuous operation modes.

Part Context

This device belongs to the AMC1311 family of optically isolated amplifiers manufactured by Texas Instruments. It is part of a broader series designed for isolated measurement applications requiring high accuracy. The family shares similar architectural principles but varies in specific parameters such as bandwidth and isolation ratings. This particular model represents a standard offering within the precision isolated amplifier category.

Replacement Considerations

Direct substitutes include the AMC1311BDWV tube-packaged version for non-reel applications. Other compatible parts in the AMC131x series may serve as alternatives depending on specific bandwidth or isolation needs. Verify pinout compatibility and electrical parameter overlaps before substituting.