INA213BQDCKRQ1

Overview

The INA213BQDCKRQ1 is a bidirectional, zero-drift current shunt monitor from Texas Instruments. It features a fixed gain of 30 V/V and operates with a single supply voltage ranging from +2.7V to +26V. The device senses common-mode voltages from -0.3V to 26V. Key electrical parameters include a maximum input bias current of 35µA, an input offset voltage of up to 5µV, and a power supply current of 100µA maximum. It offers a gain bandwidth product of 30kHz and a CMRR of 140dB. The component supports operation across a temperature range of -40°C to +125°C and is housed in a SC-70-6 package.

Feature Summary

• Zero-drift architecture ensures low offset for accurate sensing at full-scale voltages as low as 10mV
• Bidirectional capability allows detection of current flow in both directions
• Wide common-mode voltage range supports high-side and low-side measurements

Applications

• Automotive battery monitoring systems
• Load switch control circuits
• Overcurrent protection mechanisms

Procurement Notes

Verify the AEC-Q100 qualification status for automotive compliance requirements. Confirm the specific suffix indicates the correct gain setting and packaging variant. Ensure the operating environment aligns with the specified temperature range and voltage limits. Cross-reference the datasheet revision to confirm pinout compatibility.

Selection Notes

Select this component when precise current measurement is required in noisy environments. The zero-drift technology minimizes calibration needs over temperature variations. Consider the fixed gain option if external resistor matching is undesirable. Evaluate the low quiescent current for battery-powered applications.

Part Context

This part belongs to the INA21x family of current-shunt monitors. The series is characterized by its zero-drift operational amplifier design, which provides high accuracy without requiring external trimming. The Q1 suffix denotes automotive-grade reliability and qualification standards set by the Automotive Electronics Council.

Replacement Considerations

INA213CQDCKRQ1G4

FAQ

What is the maximum common-mode voltage supported?

The device supports a common-mode voltage range from -0.3V to 26V.

Is the device suitable for bidirectional current sensing?

Yes, the INA213BQDCKRQ1 is designed for bidirectional current monitoring.