AMC1302QDWVQ1

Overview

The AMC1302QDWVQ1 is an automotive-grade precision isolated amplifier designed for high-voltage current sensing applications. It features a ±50-mV input range and utilizes capacitive isolation technology to provide galvanic isolation between the primary and secondary sides of the circuit. The device operates on a single supply voltage ranging from 3 V to 5.5 V, with a typical operating current of 7.2 mA. It offers a 3-dB bandwidth of 280 kHz and a common-mode rejection ratio (CMRR) of 98 dB. The component is housed in an 8-SOIC package and is qualified under AEC-Q100 standards for automotive reliability.

Feature Summary

• Capacitive isolation architecture providing galvanic separation for high-voltage environments
• Automotive qualification ensuring reliability under strict temperature and operational conditions
• Precision signal amplification optimized for low-level shunt voltage measurements

Applications

• Current sensing in electric vehicle traction inverters
• Motor control systems requiring isolated feedback
• On-board charger (OBC) current monitoring
• DC-DC converter output current measurement

Procurement Notes

Verify that the specific part number suffix matches the required packaging format, as variations exist between tube and reel configurations. Confirm that the procurement source provides valid AEC-Q100 certification documentation to ensure compliance with automotive quality standards. Check for moisture sensitivity level requirements during storage and handling to prevent damage prior to assembly.

Selection Notes

Select this component when a high-bandwidth isolated amplifier is needed for precise current monitoring in automotive power electronics. The ±50-mV input range makes it suitable for use with standard current sense shunts. Consider the 8-SOIC package size for board space constraints and verify that the system's common-mode voltage requirements fall within the device's isolation capabilities.

Part Context

This device belongs to the AMC130x family of isolated amplifiers from Texas Instruments, which are engineered for robust performance in noisy electrical environments. The Q1 suffix indicates that the component meets the rigorous reliability and quality standards defined by the Automotive Electronics Council. It serves as a critical interface between high-voltage power stages and low-voltage control logic in modern electric and hybrid vehicles.

Replacement Considerations

The non-automotive grade AMC1302DWVR is a pin-compatible alternative but lacks AEC-Q100 qualification. For designs requiring higher input voltage ranges or different gain configurations, other members of the AMC130x series may be considered, provided they meet the specific isolation and bandwidth requirements of the application.