INA186A3IDDFT

Overview

The INA186A3IDDFT 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 features a bidirectional input common-mode voltage range from -200 mV to 40 V. The device provides a gain of 100 V/V with a 35 kHz bandwidth. Key electrical specifications include a maximum input offset voltage of 3 µV, an input bias current of 500 pA, and a typical CMRR of 150 dB. It functions reliably across an extended temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional operation supporting negative and positive current flow detection
• High precision performance characterized by ultra-low input offset voltage and bias current
• Wide common-mode voltage capability enabling measurements on high-side buses up to 40 V

Applications

• High-side current sensing in battery management systems
• Overcurrent protection circuits in industrial automation equipment
• Load monitoring in portable consumer electronics devices

Procurement Notes

Verify the specific suffix IDDFT corresponds to the 8-pin SOT-23-THIN package configuration. Confirm that the A3 grade meets the required offset voltage and gain accuracy specifications for the target application. Ensure compatibility with the system's operating temperature range and supply voltage constraints before finalizing procurement decisions.

Selection Notes

Select this component when bidirectional sensing is required alongside high precision at low supply voltages. The wide common-mode range accommodates various bus architectures. Compare against other INA186 variants if different gain factors or package footprints are necessary for the specific PCB layout constraints.

Part Context

This part belongs to the INA186 family of zero-drift current sense amplifiers designed for high-accuracy applications. The series integrates chopper stabilization to minimize offset drift over temperature. The specific model utilizes a thin SOT-23 package suitable for space-constrained designs requiring robust performance in demanding environments.

Replacement Considerations

INA186A2IDDFT: Offers similar characteristics but may differ in gain factor or specific grade accuracy. Verify pinout compatibility and functional equivalence before substitution.