INA186A2IDDFT

Overview

The INA186A2IDDFT is a voltage-output high-side measurement current shunt monitor manufactured by Texas Instruments. It operates within a supply voltage range of 1.7 V to 5.5 V and supports bidirectional current sensing with a common-mode voltage range extending from -200 mV to 40 V. The device features a fixed gain of 50 V/V, a gain bandwidth product of 37 kHz, and a typical input offset voltage of 3 µV. It draws a maximum operating supply current of 90 µA and maintains an input bias current of 500 pA. The component is housed in an 8-SOT-23-THIN package and functions reliably across an industrial temperature range of -40°C to +125°C.

Feature Summary

• Provides high-precision bidirectional current monitoring with ultra-low input offset voltage for accurate low-side signal detection.
• Supports wide common-mode voltage operation up to 40 V, enabling flexible high-side placement in various power architectures.
• Integrates zero-drift architecture to minimize offset drift over temperature variations without requiring external trimming.

Applications

• High-side current sensing in battery-powered portable devices
• Overcurrent protection circuits in industrial automation systems
• Load management in automotive electronic control units

Procurement Notes

Verify the specific suffix IDDFT corresponds to the 8-SOT-23-THIN package configuration during sourcing. Confirm that the A2 designation aligns with the required 50 V/V gain setting for your circuit design. Ensure compatibility with the specified -40°C to +125°C operating temperature range for your intended application environment.

Selection Notes

Select this component when precise bidirectional current measurement is required in space-constrained designs utilizing the thin SOT-23 form factor. The fixed 50 V/V gain simplifies resistor network design while maintaining high accuracy. Consider the 90 µA supply current for battery life optimization in low-power applications.

Part Context

This part belongs to the INA186 family of precision current sense amplifiers from Texas Instruments. The series is characterized by its zero-drift technology, which ensures minimal offset voltage changes over temperature. The INA186A2 variant specifically offers a fixed gain of 50 V/V, distinguishing it from other gain options within the same product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications against potential alternatives before implementation.