AMC0311SDWVR

Overview

The AMC0311SDWVR is a precision reinforced isolated amplifier manufactured by Texas Instruments. It features a high-impedance input optimized for voltage signal sources and provides a fixed gain of 1V/V with a single-ended output. The device operates on dual power supplies ranging from 3.0 V to 5.5 V for both high-side (VDD1) and low-side (VDD2). It offers enhanced isolation rated at 5 kVrms, ensuring robust performance in noisy environments. Key electrical characteristics include a maximum offset error of ±1 mV, a maximum offset drift of ±25 µV/°C, and a minimum common-mode transient immunity (CMTI) of 50 V/ns.

Feature Summary

• Provides reinforced isolation with an enhanced safety rating of 5 kVrms for reliable signal transmission across potential barriers.
• Features a high-impedance input stage designed to minimize loading effects on high-resistance voltage dividers or signal sources.
• Delivers a linear single-ended output proportional to the input voltage with a fixed unity gain of 1V/V.

Applications

• Motor drive systems requiring precise current sensing
• Photovoltaic inverters for solar energy conversion
• Server power supply units (PSU)
• Hybrid electric vehicle (HEV) control circuits

Procurement Notes

Verify the specific suffix 'DWVR' corresponds to the SOIC-8 wide-body package and tape-and-reel quantity. Confirm that the required isolation level meets the application's safety standards, as this model provides reinforced isolation compared to basic isolation variants. Ensure the operating temperature range aligns with the industrial specification limits defined in the official datasheet.

Selection Notes

Select this component when a high-impedance input is necessary to interface with high-output-resistance sensors without significant signal attenuation. The fixed 1V/V gain simplifies system design by eliminating external feedback resistors. Consider the 5 kVrms reinforced isolation rating if higher safety certification levels are mandated compared to standard basic isolation devices.

Part Context

This part belongs to the AMC0x11S family of precision isolated amplifiers from Texas Instruments. These devices are engineered to isolate system modules operating at different common-mode voltage levels while maintaining high accuracy. The family includes variants with different isolation ratings, such as basic and reinforced options, packaged in 8-pin SOIC formats suitable for surface-mount assembly.

Replacement Considerations

AMC0211SDWVR: Offers basic isolation instead of reinforced isolation; verify safety requirements before substitution.