INA190A3QDDFRQ1

Overview

The INA190A3QDDFRQ1 is an AEC-Q100 qualified, bidirectional current sense amplifier with a gain of 100 V/V. It operates on a supply voltage 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 typical quiescent current of 65 µA, a maximum shutdown current of 100 nA, and a minimum common-mode rejection ratio of 132 dB. The device features a typical input bias current of 500 pA and a bandwidth of 35 kHz.

Feature Summary

• Features an enable pin for low-power shutdown operation
• Supports bidirectional current sensing via reference pin offset
• Provides rail-to-rail output swing capability
• Utilizes capacitively coupled architecture for high common-mode rejection

Applications

• Body control module (BCM)
• Telematics control unit
• Emergency call (eCall) systems
• Battery management system (BMS)

Procurement Notes

Verify the specific suffix DDFFRQ1 corresponds to the SOT-23-THIN-8 package and tape-and-reel shipping configuration. Confirm that the A3 designation matches the required 100 V/V gain setting for your circuit design. Ensure compatibility with automotive temperature grades and functional safety documentation requirements before finalizing procurement.

Selection Notes

Select this component when picoamp-level input bias currents are necessary to minimize errors in microamp-range measurements. The 100 V/V gain option is suitable for applications requiring moderate signal amplification. Consider the DDF package only if the enable pin functionality is required for power management strategies.

Part Context

This device belongs to the INA190-Q1 family of ultra-precise current sense amplifiers designed for automotive environments. It shares architectural similarities with other members like the INA190A1QDDFRQ1 but differs in fixed gain settings and package options. The series is characterized by zero-drift technology and robust performance under varying common-mode conditions.

Replacement Considerations

Direct substitutes within the same family include INA190A1QDDFRQ1, INA190A2QDDFRQ1, INA190A4QDDFRQ1, and INA190A5QDDFRQ1, provided the gain difference is acceptable.