DRV401AQRGWRQ1

Sensor And Detector Interfaces Overview

The DRV401AQRGWRQ1 is an automotive-grade isolated current sensor amplifier manufactured by Texas Instruments. It integrates a high-frequency AC carrier modulation technique to provide galvanic isolation between the primary current path and the signal output. The device 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. It features a low on-resistance switch for external transformer drive, enabling precise current measurement in high-noise environments while maintaining electrical safety standards required for automotive applications.

Sensor And Detector Interfaces Feature Summary

• Integrated high-frequency AC carrier modulation for robust noise immunity
• Galvanic isolation capability for safe high-voltage current sensing
• Automotive qualification compliant with AEC-Q100 standards
• Low on-resistance internal switch for efficient external transformer excitation

Sensor And Detector Interfaces Applications

• Electric vehicle battery management systems
• Motor control drives in automotive traction inverters
• On-board charging (OBC) current monitoring
• DC-DC converter input/output current sensing

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix codes against the official Texas Instruments datasheet to confirm package type, temperature grade, and tape-and-reel specifications. Ensure that the ordering part number matches the exact functional variant required for the design, as minor suffix differences may indicate changes in packaging or regional compliance certifications rather than performance alterations.

Sensor And Detector Interfaces Selection Notes

Select this component when designing isolated current sensing circuits for automotive power electronics requiring high bandwidth and noise rejection. Consider the external transformer requirements and the need for precise gain setting resistors. Evaluate the thermal performance within the VQFN package under maximum load conditions and ensure the PCB layout supports the high-frequency switching signals generated by the internal oscillator.

Sensor And Detector Interfaces Part Context

This part belongs to the DRV401-Q1 family of isolated current sensor amplifiers designed specifically for automotive environments. It complements other Texas Instruments isolation solutions by providing a complete front-end stage for current measurement, bridging the gap between high-current primary sides and low-voltage ADC inputs in complex powertrain architectures.

Sensor And Detector Interfaces Replacement Considerations

Direct replacements include the DRV401-Q1 non-automotive grade version for non-automotive prototypes, or the DRV401B-Q1 for updated revisions. Verify pin compatibility and external component values when substituting, as internal oscillator frequencies or gain tolerances may differ slightly between sub-models.