INA211AIDCKRG4

Overview

The INA211AIDCKRG4 is a bidirectional, zero-drift current shunt monitor from the Texas Instruments INA21x series. It features a fixed gain of 50 V/V and detects voltage drops across a shunt resistor with a common-mode voltage range of -0.3V to 26V. The device operates on a single supply voltage between +2.7V and +26V, consuming a maximum of 100μA. It offers low offset voltage for accurate sensing at full-scale voltages as low as 10mV. The component functions within a temperature range of -40°C to +125°C and is housed in an SC-70-6 package.

Feature Summary

• Zero-drift architecture ensures low offset voltage for high-precision measurements
• Bidirectional capability allows detection of current flow in both directions
• Supports both high-side and low-side current sensing configurations
• Wide common-mode voltage range independent of supply voltage

Applications

• Battery management systems
• Overcurrent protection circuits
• Load switch control
• Power monitoring in portable devices

Procurement Notes

Verify the complete ordering part number matches the required suffixes for packaging and temperature grade. Confirm that the specific variant aligns with your design's voltage and accuracy requirements. Cross-reference the datasheet revision date to ensure compatibility with your system specifications. Ensure the SC-70-6 package footprint matches your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when precise bidirectional current monitoring is required in space-constrained applications. The fixed gain simplifies circuit design by eliminating external resistor networks. Consider the wide common-mode voltage range if operating near power rails. The low quiescent current makes it suitable for battery-powered systems where efficiency is critical.

Part Context

This device belongs to the INA21x family of current shunt monitors, which are designed for high-accuracy current measurement. The family shares similar architectural features but varies in gain and package options. The INA211 specifically provides a fixed gain of 50 V/V, making it distinct from other variants in the series that offer different amplification factors or adjustable gains.

Replacement Considerations

Compatible substitutes include other members of the INA21x family such as INA210, INA212, INA213, and INA214, provided their gain values match the application requirements. Ensure any replacement maintains the same SC-70-6 package and electrical characteristics for direct pin-to-pin compatibility.