INA186A2QDDFRQ1

Overview

The INA186A2QDDFRQ1 is an AEC-Q100 qualified, bidirectional current-sense amplifier with a fixed gain of 50 V/V. It operates on a single supply from 1.7 V to 5.5 V and supports common-mode voltages from -0.2 V to +40 V. Key electrical specifications include a maximum offset voltage of ±50 µV, a minimum common-mode rejection ratio of 120 dB, and a typical quiescent current of 48 µA. The device features a DDF SOT-23 package with an enable pin.

Feature Summary

• Bidirectional current sensing capability enabled by the REF pin for precise monitoring in both directions.
• Low input bias current allows for accurate measurement of microamp-level currents using larger sense resistors.
• Integrated enable pin reduces supply current to less than 0.1 µA when disabled.
• Rail-to-rail output swing maximizes usable dynamic range at low supply voltages.

Applications

• Body control module (BCM)
• Telematics control unit
• Emergency call (eCall) systems
• 12-V battery management system (BMS)

Procurement Notes

Verify the specific suffix QDDF corresponds to the DDF SOT-23 package containing the ENABLE pin. Confirm the 'A2' designation matches the required 50 V/V gain for your circuit design. Ensure automotive qualification requirements align with AEC-Q100 Grade 1 standards before finalizing procurement.

Selection Notes

Select this component when bidirectional sensing is required within a 40-V common-mode range. The 50 V/V gain suits applications needing moderate signal amplification. Consider the DDF package's enable feature for power-sensitive designs requiring shutdown modes. Verify that the 1.7-V minimum supply voltage meets your system's lowest operating conditions.

Part Context

This part belongs to the INA186-Q1 family of high-precision, low-power current-sense amplifiers designed for automotive environments. The family offers various gain options and packages, including SC70 and SOT-23 variants. The DDF package specifically adds an enable function not present in other form factors within the same series.

Replacement Considerations

INA186A2IDCKRQ1