AMC3311DWER

Overview

The AMC3311DWER is a precision, single-ended isolated amplifier featuring an integrated DC/DC converter for single-supply operation from 3.0 V to 5.5 V. It provides a fixed gain of 1.0 V/V with a 2-V input range and 1-GΩ input impedance. Key electrical parameters include ±1 mV maximum offset error, ±0.2% gain error, and 85 kV/µs minimum common-mode transient immunity (CMTI). The device operates over an extended temperature range of –40°C to +125°C and utilizes reinforced capacitive isolation certified to DIN EN IEC 60747-17 and UL1577 standards.

Feature Summary

• Integrated isolated DC/DC converter enables single-supply low-side power operation
• Reinforced capacitive isolation barrier certified for safety-related applications
• High input impedance optimized for direct connection to high-voltage resistive dividers
• System-level diagnostic features including active-low open-drain status output

Applications

• Isolated DC voltage sensing in motor drives
• Photovoltaic inverters
• Server power-supply units (PSU)
• DC charging stations

Procurement Notes

Verify the specific ordering suffix 'DWER' corresponds to the SOIC-16 wide-body package and reel packaging configuration. Confirm that the component meets the required safety certifications for your application, specifically DIN EN IEC 60747-17 and UL1577 reinforcement ratings. Ensure design compliance with the specified insulation working voltage and creepage/clearance distances on the PCB layout.

Selection Notes

Select this component when high accuracy is required for non-ground-referenced voltage measurements. The integrated power supply simplifies board design by eliminating external isolated converters. Consider the 2-V input limit and 1.0 V/V gain for signal conditioning before ADC conversion. Verify thermal performance against the junction-to-ambient resistance if operating at maximum ambient temperatures.

Part Context

This part belongs to the AMC3311 family of precision isolated amplifiers. It is distinguished by its single-channel architecture and fixed unity gain configuration. The DWE designation indicates the 16-pin wide-body SOIC package, which supports the necessary creepage and clearance distances for reinforced isolation ratings compared to standard packages.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.