AMC1351DWVR

Overview

The AMC1351DWVR is a precision, reinforced isolated amplifier featuring a single channel with a fixed gain of 0.4 V/V and a linear input voltage range from -0.25 V to 5 V. It provides galvanic isolation certified at 5000 VRMS for one minute per UL1577 and supports a working voltage up to 1.5 kVRMS. The device operates on supply voltages between 3 V and 5.5 V, drawing typical currents of 5.9 mA and 7 mA. It offers a 300 kHz bandwidth, high common-mode transient immunity of 100 kV/µs, and fail-safe output functionality.

Feature Summary

• Reinforced galvanic isolation barrier certified to DIN VDE V 0884-11 and UL1577 standards
• High input impedance optimized for connection to resistive dividers or high-output-resistance sources
• Fail-safe output mechanism activates during high-side undervoltage or power loss conditions

Applications

• Isolated DC voltage sensing in motor drives
• Voltage monitoring in frequency inverters
• DC voltage measurement in solar inverters
• Power supply feedback loops

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current orderable addendum to ensure package and temperature grade alignment. Confirm that the application circuit maintains the required PCB creepage and clearance distances to preserve the safety certification ratings specified in the datasheet insulation specifications section.

Selection Notes

Select this component when a fixed attenuation ratio is required for high-voltage signal conditioning. The low offset drift and high input impedance make it suitable for precision sensing applications where minimal loading of the source divider is critical. Ensure the system design accommodates the differential output configuration and the specified common-mode output voltage level.

Part Context

This part belongs to the AMC1351 series of precision isolated amplifiers manufactured by Texas Instruments. It utilizes a capacitive isolation barrier based on SiO2 technology to transmit data across the isolation boundary. The device is designed to separate system parts operating at different common-mode voltage levels while protecting low-voltage circuitry from harmful potentials.

Replacement Considerations

AMC1351DWV

FAQ

What is the maximum repetitive peak isolation voltage supported by the device?

The maximum repetitive peak isolation voltage (VIORM) is 2120 VPK.

How does the device behave if the high-side supply is missing?

The device features a fail-safe output that drives the differential output voltage to approximately -2.5 V when the high-side supply is undervoltage or missing.