INA210CQDCKRQ1

Overview

The INA210CQDCKRQ1 is a single-channel, bi-directional current shunt monitor from the Texas Instruments INA210 series. It features a fixed gain of 200 V/V and operates within a supply voltage range of 2.7 V to 26 V. The device supports high-side and low-side measurements with a common-mode voltage up to 12 V. Key electrical parameters include a gain bandwidth product of 14 kHz, an input bias current of 28 uA, and an input offset voltage of 550 nV. It maintains a CMRR of 140 dB and a gain error of 0.02%. The component functions across a temperature range of -40°C to +125°C and is housed in a SC-70-6 package.

Feature Summary

• Bi-directional zero-drift architecture for precise current monitoring
• Fixed internal gain of 200 V/V eliminates external resistor requirements
• Supports both high-side and low-side measurement configurations
• Automotive qualification compliant with AEC-Q100 standards

Applications

• Automotive battery management systems
• High-side current sensing in power distribution units
• Load switch control circuits
• Overcurrent protection mechanisms

Procurement Notes

Verify the specific suffix 'C' against the official datasheet to confirm it denotes the automotive grade (Q1) variant rather than a commercial grade, as standard INA210 parts may lack this designation. Ensure the SC-70-6 package matches your PCB footprint. Confirm that the 12 V common-mode limit aligns with your system's bus voltage requirements before finalizing procurement.

Selection Notes

Select this component when a fixed 200 V/V gain is required for high-resolution current sensing in automotive environments. It is suitable for applications needing bi-directional flow detection with minimal external component count. Consider the 12 V common-mode limit; if higher voltages are present, alternative models from the series with extended common-mode ranges should be evaluated instead.

Part Context

This part belongs to the INA210 family of zero-drift current shunt monitors designed for precision applications. The 'Q1' suffix indicates automotive qualification, ensuring reliability under harsh operating conditions. It complements other variants like the INA210BIDCKRQ1 by offering specific grading or packaging options within the same functional core technology.

Replacement Considerations

• INA210BIDCKRQ1
• INA210AIRSWT

FAQ

What is the maximum common-mode voltage supported?

The INA210CQDCKRQ1 supports a common-mode voltage up to 12 V.

Is this device suitable for bidirectional current measurement?

Yes, the device is explicitly designed as a bi-directional current shunt monitor.