AMC1400QDWLRQ1

Overview

The AMC1400QDWLRQ1 is an automotive, precision, reinforced isolated amplifier with a ±250-mV input voltage range optimized for shunt resistor current measurements. It features a fixed gain of 8.2 V/V and operates on 3.3-V or 5-V supplies on both high-side and low-side. The device provides reinforced galvanic isolation certified to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards. It includes missing high-side supply detection and meets CISPR-11 and CISPR-25 EMI standards.

Feature Summary

• Reinforced isolation barrier certified for up to 7.5 kV RMS working voltage per UL1577 and DIN EN IEC 60747-17
• High common-mode transient immunity of 100 kV/µs minimum
• Low DC errors including offset error of ±0.2 mV max and gain error of ±0.3% max
• Missing high-side supply detection feature for system diagnostics

Applications

• Shunt-resistor-based current sensing in HEV/EV charging piles
• Shunt-resistor-based current sensing in HEV/EV on-board chargers (OBC)
• Shunt-resistor-based current sensing in HEV/EV DC/DC converters
• Shunt-resistor-based current sensing in HEV/EV traction inverters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape-and-reel specifications. Ensure the component meets AEC-Q100 Grade 1 qualification requirements for the intended operating temperature range. Confirm that the design adheres to safety-related certifications and functional safety documentation provided by Texas Instruments.

Selection Notes

Select this component when precise current measurement via shunt resistors is required in high common-mode voltage environments. The fixed gain of 8.2 V/V and ±250-mV input range are optimized for direct connection to low-impedance sources. Consider the 15-mm stretched SOIC package dimensions for PCB layout constraints and verify insulation clearance and creepage distances meet application-specific safety standards.

Part Context

The AMC1400-Q1 belongs to Texas Instruments' family of automotive precision isolated amplifiers designed for high-voltage power management applications. It utilizes a delta-sigma modulation scheme to transmit signals across a silicon dioxide-based capacitive isolation barrier. This technology ensures high reliability and magnetic field immunity compared to traditional transformer-based isolators.

Replacement Considerations

Consult the official datasheet orderable addendum for qualified replacement part numbers within the AMC1400-Q1 series. Verify pin compatibility and electrical characteristics before substitution.