INA186A1IDDFT

Overview

The INA186A1IDDFT is a high-precision, bidirectional current shunt monitor manufactured by Texas Instruments. It operates within a supply voltage range of 1.7 V to 5.5 V and supports common-mode voltages from -200 mV to 40 V. The device features a fixed gain of 50 V/V, an input offset voltage of ±3 µV, and a gain error of ±0.04%. It exhibits a gain-bandwidth product of 45 kHz, input bias current of 500 pA, and quiescent current of 90 µA. The component functions reliably across an operating temperature range of -40°C to +125°C and is housed in an 8-pin SOT-23-THIN package.

Feature Summary

• Zero-drift architecture ensures high precision with low offset voltage and drift over temperature.
• Bidirectional sensing capability allows accurate measurement of current flow in both directions.
• High common-mode rejection ratio maintains accuracy in noisy environments with large common-mode signals.

Applications

• Battery management systems requiring precise current monitoring
• Industrial process control loops for load cell amplification
• Power supply output current regulation

Procurement Notes

Verify the specific suffix IDDFT corresponds to the SOT-23-THIN package and tape-and-reel configuration. Confirm that the A1 grade meets the required offset voltage specifications for the application. Ensure compatibility with the target PCB footprint and reflow soldering profile for thin packages.

Selection Notes

Select this part when a fixed gain of 50 V/V is required for bidirectional current sensing. Consider the SOT-23-THIN package for space-constrained designs. Evaluate the 45 kHz bandwidth against the system's dynamic response requirements. Compare input offset voltage stability against other zero-drift amplifiers if extreme precision is needed.

Part Context

This component belongs to the INA186 family of precision current shunt monitors. The series is characterized by its zero-drift technology, which eliminates the need for external trimming. The A1 variant specifies tighter offset voltage tolerances compared to standard grades, ensuring higher accuracy in low-side or high-side sensing applications without additional calibration.

FAQ

What is the maximum common-mode voltage supported?

The INA186A1IDDFT supports a common-mode voltage range from -200 mV to 40 V.

Is the device suitable for bidirectional current measurement?

Yes, the INA186A1IDDFT is designed for bidirectional current sensing, allowing detection of current flow in both directions.