INA186A5IDDFT

Overview

The INA186A5IDDFT 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 500 V/V, ensuring precise amplification of small differential signals across the shunt resistor. It incorporates zero-drift architecture to minimize offset voltage and drift over temperature variations. The component is housed in an 8-pin SOT-23-THIN package and is rated for operation across an extended industrial temperature range of -40°C to +125°C.

Feature Summary

• Zero-drift architecture ensures high precision by minimizing input offset voltage and drift.
• Bidirectional sensing capability allows accurate measurement of current flow in both directions.
• Wide common-mode voltage range supports high-side monitoring in systems up to 40 V.

Applications

• High-side current monitoring in battery-powered portable devices
• Overcurrent protection circuits in industrial automation systems
• Load switching applications requiring precise current feedback

Procurement Notes

Verify the specific suffix IDDFT against the manufacturer's official datasheet to confirm the package type and tape-and-reel specifications. Ensure that the A5 gain variant matches the system design requirements before procurement. Cross-reference the ordering part number with the latest Texas Instruments documentation to avoid discrepancies in pinout or electrical characteristics.

Selection Notes

Select this component when high accuracy is required in space-constrained designs due to its thin package. The fixed 500 V/V gain is suitable for detecting small voltage drops across low-value shunt resistors. Consider the bidirectional nature if the application involves regenerative loads or reversible power flows. Verify that the 40 V common-mode limit aligns with the maximum bus voltage in the target circuit.

Part Context

This device belongs to the INA186 family of precision current sense amplifiers. The family is characterized by zero-drift technology and wide common-mode voltage ranges. The INA186A5IDDFT specifically denotes the version with a 500 V/V gain and SOT-23-THIN packaging. Other variants in the series offer different gains and package options to suit various board space and sensitivity requirements.

Replacement Considerations

Check for direct substitutes within the INA186 family with matching gain and package. Verify compatibility with alternative current sense amplifiers offering similar zero-drift performance and common-mode voltage ranges. Ensure any replacement maintains the bidirectional sensing capability and operating temperature specifications.