INA200AQDGKRQ1

Overview

The INA200AQDGKRQ1 is an automotive-grade, high-side current shunt monitor manufactured by Texas Instruments. It operates with a supply voltage range of 2.7 V to 18 V and supports input common-mode voltages from -16 V to 80 V. The device features a fixed gain of 20 V/V and maintains an accuracy of ±3.5% over the operating temperature range of -40°C to +125°C. It draws a typical supply current of 1.85 mA and is housed in an 8-VSSOP package.

Feature Summary

• High-side current sensing capability for monitoring load currents
• Automotive qualification compliant with AEC-Q100 standards
• Wide common-mode voltage range supporting various system architectures

Applications

• Automotive battery management systems
• Load switching protection circuits
• Current limiting applications in vehicle electronics

Procurement Notes

Verify the specific suffix 'RQ1' confirms AEC-Q100 automotive qualification and tape-and-reel packaging. Ensure the design accommodates the 8-VSSOP thermal requirements and moisture sensitivity level. Confirm that the fixed 20 V/V gain meets the signal conditioning needs for the target ADC or microcontroller interface without external amplification.

Selection Notes

Select this component when high-side monitoring is required within an 80 V common-mode window. The fixed 20 V/V gain simplifies circuit design compared to programmable alternatives. Consider the ±3.5% accuracy specification against system tolerance requirements. The low supply current makes it suitable for power-sensitive automotive environments where standby consumption must be minimized.

Part Context

This part belongs to the INA200 family of current shunt monitors designed for robust industrial and automotive use. The 'A' indicates improved accuracy, while 'Q1' denotes automotive reliability certification. It serves as a bridge between low-voltage control logic and high-voltage power stages, providing isolated measurement data via a single-ended output.

Replacement Considerations

The non-automotive INA200AIDGKR is a functional equivalent but lacks AEC-Q100 certification. Other family members like INA284 offer bidirectional sensing and higher precision but differ in pinout and specifications.