AMC1302QDWVRQ1

Overview

The AMC1302QDWVRQ1 is an automotive-grade precision isolated amplifier designed for high-voltage current sensing and power management applications. It features a ±50-mV input range, providing accurate measurement of low-level differential signals in noisy environments. The device utilizes capacitive isolation technology to achieve galvanic isolation between the input and output sides. It operates within a supply voltage range of 3 V to 5.5 V and supports a wide operating temperature range from -40°C to +125°C. The component is housed in an 8-pin SOIC package.

Feature Summary

• Provides galvanic isolation for precise current sensing in high-voltage systems
• Optimized for ±50-mV input signal ranges with high accuracy
• Automotive qualification ensuring reliability under harsh environmental conditions

Applications

• Automotive electric vehicle (EV) and hybrid electric vehicle (HEV) battery management systems
• Motor drive current sensing in traction inverters
• On-board charger (OBC) current monitoring
• DC-DC converter output current regulation

Procurement Notes

Verify that the specific part number suffix matches the required automotive grade and packaging configuration. Confirm that the design-in process accounts for the specific isolation voltage ratings and thermal requirements of the target application. Ensure compatibility with the system's digital interface standards before finalizing procurement specifications.

Selection Notes

Select this component when high-precision measurement of small differential voltages is required in electrically noisy automotive environments. It is suitable for designs needing robust galvanic isolation to protect low-voltage control circuitry from high-voltage power stages. Consider its bandwidth and gain characteristics relative to the specific current sensing shunt or Hall-effect sensor being utilized.

Part Context

This device belongs to the AMC130x family of isolated amplifiers from Texas Instruments. It shares architectural similarities with other members like the AMC1300 and AMC1301 but is specifically tuned for ±50-mV inputs. The Q1 suffix denotes its compliance with AEC-Q100 standards for automotive electronics, distinguishing it from commercial variants.

Replacement Considerations

Direct replacements include other AMC130x series parts such as the AMC1300QDWVRQ1 or AMC1301QDWVRQ1, provided their input voltage ranges and gain settings align with the system design requirements. Verify pinout compatibility and isolation voltage specifications when substituting.