INA211BIDCKT

Overview

The INA211BIDCKT is a single-channel, bidirectional current sense amplifier from the Texas Instruments INA21x family. It features a fixed gain of 50 V/V and operates on a single supply voltage ranging from 2.7 V to 26 V. The device utilizes a zero-drift architecture with an input offset voltage (Vos) of 1 µV and an input bias current (Ib) of 28 µA. It provides a gain-bandwidth product (GBP) of 7 kHz and a common-mode rejection ratio (CMRR) of 140 dB. The component supports high-side and low-side sensing with a common-mode voltage range of -0.3 V to 26 V. It functions within 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 voltage for accurate sensing of small shunt voltages down to 10 mV full scale.
• Bidirectional operation allows detection of current flow in both directions relative to ground.
• High common-mode rejection ratio maintains signal integrity across wide common-mode voltage ranges.

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops
• Power supply output current limiting

Procurement Notes

Verify the specific suffix 'CKT' corresponds to the SC-70-6 tape-and-reel packaging configuration as documented in official datasheets. Confirm that the 'BI' grade indicates the specified 1 µV offset voltage performance level. Ensure compatibility with the required operating temperature range of -40°C to +125°C for the target application environment.

Selection Notes

Select this component when a fixed gain of 50 V/V is required for bidirectional current sensing applications. It is suitable for designs needing high precision with minimal drift over temperature. Consider the SC-70-6 package size for space-constrained layouts. Verify that the 2.7 V minimum supply voltage aligns with the system power rails.

Part Context

The INA211 belongs to the INA21x series of zero-drift current shunt monitors. This family offers multiple fixed gain options including 20, 50, 100, 200, and 500 V/V. All members share similar electrical characteristics such as low supply current and wide common-mode voltage tolerance, differing primarily in gain and bandwidth specifications.

Replacement Considerations

INA210BIDCKT: Lower gain (20 V/V), higher offset (550 nV). INA212AIDCKT: Higher gain (100 V/V), same offset. INA214BIDCKT: Higher gain (100 V/V), same offset. Check gain requirements carefully before substitution.