INA212CQDCKRQ1

Overview

The INA212CQDCKRQ1 is a bidirectional, zero-drift current-shunt monitor manufactured by Texas Instruments. It operates on a single supply voltage ranging from 2.7 V to 26 V and features an input common-mode voltage range of -0.3 V to 26 V. The device provides a voltage output proportional to the shunt voltage drop. Key electrical parameters include a maximum supply current of 100 µA, an input bias current of 35 µA, and an input offset voltage of 5 µV. It offers a gain bandwidth product of 14 kHz and a slew rate of 0.4 V/µs. The component is qualified for automotive applications under AEC-Q100 standards and supports operation across a temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture ensures low input offset voltage for accurate sensing of small shunt voltage drops.
• Bidirectional capability allows detection of current flow in both directions relative to ground.
• Wide common-mode voltage range enables high-side or low-side measurement configurations independent of supply voltage.
• Automotive qualification (AEC-Q100) ensures reliability for demanding vehicle electronics environments.

Applications

• Automotive battery monitoring systems
• High-side or low-side current sensing in power distribution units
• Motor control circuit protection
• Load switch current limiting

Procurement Notes

Verify that the specific suffix 'Q1' confirms AEC-Q100 automotive qualification status as defined by Texas Instruments. Ensure the package designation matches the required SC-70 footprint for PCB layout compatibility. Confirm RoHS compliance and REACH status against the latest manufacturer documentation prior to final procurement approval.

Selection Notes

Select this component when precise DC current measurement is required in automotive environments with wide common-mode voltage swings. The zero-drift technology minimizes calibration needs compared to standard amplifiers. Consider the 14 kHz bandwidth and 100 µA supply current for power-sensitive designs requiring high accuracy without significant quiescent power consumption.

Part Context

This part belongs to the INA21x family of current-shunt monitors from Texas Instruments. The series is characterized by its zero-drift operational amplifier architecture, which maintains high precision over temperature variations. The Q1 suffix specifically denotes automotive-grade manufacturing and testing protocols, distinguishing it from commercial variants within the same functional family.

Replacement Considerations

INA212BIDCKRQ1: Offers similar functionality but may differ in offset voltage specifications and gain error tolerances. Verify exact parameter alignment before substitution.

FAQ

What is the input common-mode voltage range?

The device supports a common-mode voltage range from -0.3 V to 26 V, allowing flexibility in high-side and low-side placement.

Is this component suitable for automotive applications?

Yes, the Q1 suffix indicates that the INA212CQDCKRQ1 is qualified according to the AEC-Q100 standard for automotive grade components.