INA186A3QDDFRQ1

Overview

The INA186A3QDDFRQ1 is an automotive-grade, bidirectional current-sense amplifier with a fixed gain of 100 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. The device features a typical quiescent current of 48 µA and includes an enable pin for low-power shutdown. It offers a maximum offset voltage of ±50 µV and a minimum common-mode rejection ratio of 120 dB.

Feature Summary

• Bidirectional sensing capability via external reference voltage
• Low input bias current enabling microamp-level measurements
• Integrated enable pin for power management
• Rail-to-rail output swing for extended dynamic range

Applications

• Automotive body control modules
• Telematics control units
• Emergency call systems
• 12-V battery management systems

Procurement Notes

Verify the specific suffix QDDFRQ1 matches the required DDF package and AEC-Q100 qualification. Confirm the 'A3' designation corresponds to the 100 V/V gain option. Ensure the component meets functional safety documentation requirements if applicable to the design.

Selection Notes

Select this part when bidirectional monitoring is required in automotive environments. The 100 V/V gain suits applications needing moderate signal amplification. The DDF package provides the necessary REF and ENABLE pins not available in other variants.

Part Context

This component belongs to the INA186-Q1 family of high-precision current sense amplifiers designed for cost-sensitive automotive systems. It shares core specifications with the broader series but is distinguished by its specific gain, package type, and automotive qualification status.

Replacement Considerations

Substitutes must match the 100 V/V gain and DDF package. Verify that alternative parts support bidirectional operation and have compatible common-mode voltage ranges.