INA186A2QDCKRQ1

Overview

The INA186A2QDCKRQ1 is a precision, bidirectional current sense amplifier from Texas Instruments, qualified to AEC-Q100 standards for automotive applications. It operates with a supply voltage range of 1.7 V to 5.5 V and supports common-mode voltages from -200 mV to 40 V. The device features a fixed gain of 50 V/V, a gain bandwidth product of 37 kHz, and a maximum input offset voltage of 3 µV. It draws 90 µA of supply current and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional sensing capability allows detection of current flow in both directions across the shunt resistor.
• High-precision architecture ensures accurate measurements with low input offset voltage and high common-mode rejection ratio.
• Automotive qualification meets AEC-Q100 reliability standards for harsh environment operation.

Applications

• Battery management systems in electric vehicles
• Motor control circuits
• Load switch and power distribution units

Procurement Notes

Verify the specific suffix QDCKRQ1 to confirm automotive grade, SC-70-6 package, and tape-and-reel packaging. Ensure compatibility with AEC-Q100 requirements for your target application. Cross-reference datasheet revision dates to confirm parameter consistency. Confirm that the supplier provides genuine Texas Instruments components to avoid counterfeit risks.

Selection Notes

Select this component when bidirectional current monitoring is required in automotive environments. The 50 V/V gain suits applications where the output voltage swing must accommodate specific ADC input ranges. Consider the SC-70-6 package for space-constrained PCB layouts. Verify that the 40 V common-mode voltage range aligns with the system's bus voltage levels.

Part Context

This part belongs to the INA186-Q1 family of zero-drift current sense amplifiers designed for high-accuracy industrial and automotive use. It shares architectural similarities with other INA186 variants but differs in gain, package, and qualification status. The Q1 designation indicates automotive-grade reliability and extended temperature performance compared to standard commercial counterparts.

FAQ

What is the fixed voltage gain of the INA186A2QDCKRQ1?

The device has a fixed internal gain of 50 V/V.

Does this amplifier support bidirectional current measurement?

Yes, it is designed to measure current flowing in both directions through the shunt resistor.

What is the maximum common-mode voltage supported?

The amplifier supports common-mode voltages ranging from -200 mV to 40 V.