INA215BQDCKRQ1

Overview

The INA215BQDCKRQ1 is a high-precision, bidirectional current sense amplifier manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 26 V and supports a common-mode voltage up to 26 V. The device features a fixed gain of 75 V/V, a gain error of 0.02%, and an input offset voltage of 1 µV. It is qualified under AEC-Q100 standards for automotive applications, with an operating temperature range from -40°C to +125°C. Packaged in a SC-70-6 surface-mount case, it draws 100 µA of quiescent current.

Feature Summary

• Bidirectional measurement capability for both positive and negative current flow
• High precision performance with low input offset voltage and minimal gain error
• Wide common-mode voltage range supporting high-side sensing applications
• Automotive qualification ensuring reliability in harsh environments

Applications

• Automotive battery management systems
• Motor control and protection circuits
• Load switch monitoring
• General-purpose current sensing in industrial equipment

Procurement Notes

Verify the specific suffix 'B' indicates the correct gain variant (75 V/V) as part numbers often vary by gain code. Confirm AEC-Q100 qualification status matches project requirements. Check for moisture sensitivity levels and recommended reflow profiles during assembly. Ensure the SC-70-6 package footprint aligns with PCB design constraints. Validate that the bidirectional operation meets system polarity needs.

Selection Notes

Select this component when high accuracy is required over a wide common-mode voltage range. The 75 V/V gain suits applications requiring moderate signal amplification without excessive output swing limitations. Consider the 100 µA quiescent current for power-sensitive designs. Compare against other INA215 variants if different gain factors or package types are needed. Ensure the bidirectional feature is necessary for the specific circuit topology.

Part Context

The INA215 series comprises high-precision current sense amplifiers designed for demanding applications. The QDCKRQ1 designation identifies the automotive-grade version in a small SC-70-6 package. This family offers various gain options to accommodate different shunt resistor values and voltage ranges. The device integrates precision resistors to achieve stable gain and low drift characteristics.