INA2181A1IDGST

Overview

The INA2181A1IDGST is a bidirectional current-sense amplifier manufactured by Texas Instruments. It features a fixed gain of 200 V/V and supports a common-mode voltage range from -0.2 V to 26 V. The device operates on a single supply voltage between 2.7 V and 5.5 V, with a typical quiescent current of 500 µA per channel. It offers a bandwidth of 105 kHz and a minimum common-mode rejection ratio of 100 dB. The input offset voltage is typically 100 µV, and the component functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Supports bidirectional current sensing for both low-side and high-side configurations.
• Provides high common-mode rejection to maintain accuracy in noisy environments.
• Delivers rail-to-rail output capability for direct interfacing with data converters.

Applications

• Industrial process control systems requiring precise current monitoring.
• Power management units in computing equipment.
• Battery management systems for charge and discharge tracking.

Procurement Notes

Verify the specific suffix IDGST corresponds to the TSSOP-10 package when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the design accounts for the specified thermal performance limits during operation.

Selection Notes

Select this component for applications requiring high gain and wide common-mode voltage ranges. The fixed 200 V/V gain suits low-current measurements where high resolution is critical. Consider the 500 µA power consumption relative to system efficiency requirements.

Part Context

This part belongs to the INA2181 family of bidirectional current-sense amplifiers. It shares architectural similarities with the INA181 series but offers distinct gain and bandwidth characteristics tailored for specific industrial measurement needs.

Replacement Considerations

The INA381A1IDGST is listed as a substitute option. Verify pin compatibility and electrical parameter alignment before implementation.