AMC1300QDWVRQ1

Overview

The AMC1300QDWVRQ1 is an automotive-grade, precision isolated amplifier with a ±250-mV input range optimized for shunt resistor current sensing. It features a fixed gain of 8.2 and operates on a single SOIC-8 package. The device provides reinforced galvanic isolation certified to 5000 VRMS per UL1577 and up to 7071 VPK per DIN VDE V 0884-11. It supports high-side supply voltages from 4.5 V to 5.5 V and low-side supplies from 3 V to 5.5 V. Key electrical characteristics include a common-mode rejection ratio of -100 dB at DC and a signal delay of 3.4 µs maximum.

Feature Summary

• Reinforced galvanic isolation barrier certified for safety-related applications
• Integrated system-level diagnostic features including common-mode overvoltage detection
• Optimized for direct connection to shunt resistors or low-voltage signal sources
• High immunity to magnetic interference ensuring accurate current control

Applications

• Shunt-resistor-based current sensing in motor drives
• Current monitoring in frequency inverters
• Isolated power management in uninterruptible power supplies

Procurement Notes

Verify the specific grade (AMC1300 vs AMC1300B) required for your temperature range, as the Q1 suffix denotes automotive qualification but does not specify the performance tier. Confirm that the high-side supply voltage requirements align with the 4.5 V minimum specified for the standard AMC1300 variant. Ensure PCB layout maintains the required creepage and clearance distances to preserve the certified isolation ratings.

Selection Notes

Select this component when precise current measurement is required in electrically noisy environments with high common-mode voltages. The fixed gain of 8.2 simplifies design by eliminating external feedback components. Consider the AMC1300B variant if operation below -40°C is necessary, as it offers superior offset drift and higher CMTI compared to the standard AMC1300. Verify that the 3.4 µs signal delay meets the timing constraints of your control loop.

Part Context

This part belongs to the Texas Instruments AMC130x family of isolated amplifiers designed for high-voltage industrial and automotive applications. The 'Q1' suffix indicates compliance with AEC-Q100 standards for automotive use. The 'DWVR' suffix specifies the 8-pin SOIC package and tape-and-reel packaging format. It serves as a robust solution for separating high-voltage power stages from low-voltage control circuitry.

Replacement Considerations

The AMC1300BQDWVRQ1 is a verified substitute offering extended temperature range (-55°C to +125°C) and improved accuracy metrics. Other members of the AMC130x family may serve as alternatives if different gain settings or bandwidth requirements are needed, provided isolation ratings remain compatible.