AMC3330QDWERQ1

Overview

The AMC3330QDWERQ1 is an automotive-grade, precision isolated amplifier with a fully integrated DC/DC converter. It features a ±1V differential input range optimized for high-impedance voltage sensing and provides a fixed gain of 2.0 V/V. The device operates on a single low-side supply of 3.0V to 5.5V. Key electrical specifications include a maximum gain error of ±0.2%, an offset voltage of ±0.3mV, and a common-mode transient immunity of 85kV/µs. It offers reinforced isolation rated at 6000VPK and 4250VRMS.

Feature Summary

• Integrated isolated DC/DC converter enables single-supply operation from the low side.
• Reinforced capacitive isolation barrier certified per DIN EN IEC 60747-17 and UL1577.
• High common-mode transient immunity supports accurate measurement in noisy environments.
• System-level diagnostic features include a dedicated fault-detection output pin.

Applications

• Isolated voltage sensing in HEV/EV onboard chargers (OBC)
• Isolated voltage sensing in HEV/EV DC/DC converters
• Isolated voltage sensing in HEV/EV traction inverters
• Isolated voltage sensing in HEV/EV battery management systems (BMS)

Procurement Notes

Verify that the component matches the specific Q1 automotive qualification requirements. Confirm the package type is DWE (SOIC-16) and check safety certifications against current standards. Ensure the design accounts for the integrated DC/DC converter power requirements and thermal dissipation limits specified in the datasheet.

Selection Notes

Select this component when high-precision voltage monitoring is required in electric vehicle applications. The integrated DC/DC converter simplifies board layout by eliminating the need for external isolated power supplies. The fixed gain of 2.0 V/V and ±1V input range are suitable for direct connection to resistor-divider networks.

Part Context

This part belongs to the AMC3330-Q1 family of precision isolated amplifiers. It is designed specifically for automotive environments, meeting AEC-Q100 Grade 1 temperature specifications. The device integrates signal conditioning and isolation into a single SOIC-16 package, reducing system complexity compared to discrete solutions.

Replacement Considerations

AMC3330DWERG4