AMC1311DWV

Overview

The AMC1311DWV is a precision isolated amplifier from Texas Instruments designed for high-voltage voltage sensing applications. It features a single channel with galvanic isolation rated at 5000 Vrms. The device operates within a supply voltage range of 4.5 V to 5.5 V and consumes 7.1 mA of quiescent current. Key electrical specifications include a 3dB bandwidth of 220 kHz, an input bias current of 15 nA, and an input offset voltage of 9.9 mV. The gain error is specified at 0.04%, with a power dissipation of 97.9 mW. It supports a shutdown function and operates in temperatures from -40°C to +125°C.

Feature Summary

• Provides galvanic isolation between high-voltage input circuits and low-voltage output stages to protect sensitive components.
• Features a high-impedance input optimized for connection to high-output-impedance sources such as resistive dividers.
• Includes integrated high-side power supply undervoltage detection to simplify system diagnostics.

Applications

• Precision voltage sensing in industrial automation systems
• Isolated measurement in motor drive control circuits
• Voltage monitoring in renewable energy inverters

Procurement Notes

Verify the specific suffix 'DWV' indicates tube packaging rather than reel or cut tape formats when ordering. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements for your assembly process. Ensure the 8-SOIC package dimensions match your PCB footprint constraints. Cross-reference the datasheet revision date to ensure alignment with current design specifications.

Selection Notes

Select this component when a fixed unity gain configuration is required for isolated voltage monitoring. Compare against the AMC1311BDWV if extended temperature range (-55°C to +125°C) or lower offset voltage (1.5 mV) is necessary. Consider the 220 kHz bandwidth limitation for high-frequency signal applications. Evaluate the 5000 Vrms isolation rating against system safety standards.

Part Context

This part belongs to the AMC1311 series of precision isolated amplifiers. It shares functional similarities with other members like the AMC1311DWVR but differs in packaging format. The series utilizes capacitive isolation technology to achieve high common-mode transient immunity. It is distinct from digital isolators by providing an analog output proportional to the input voltage.

Replacement Considerations

AMC1311BDWV offers improved offset voltage and wider temperature range. AMC1311DWVR provides identical electrical performance but in reel packaging for automated assembly. Verify pinout compatibility before substitution.