INA296A3QDDFRQ1

Overview

The INA296A3QDDFRQ1 is an AEC-Q100 qualified, bidirectional current sense amplifier with a fixed gain of 50 V/V. It supports a common-mode voltage range from -5V to 110V and operates on a supply voltage between 2.7V and 20V. Key electrical specifications include a typical bandwidth of 1.1MHz, a maximum gain error of ±0.01%, and a maximum input offset voltage of ±10µV. The device draws a typical quiescent current of 2.5mA and is housed in an SOT-23-8 (DDF) package.

Feature Summary

• Ultra-precise bidirectional operation with high DC CMRR for accurate measurement across wide common-mode ranges
• High-speed performance featuring 1.1MHz bandwidth and fast settling time suitable for transient detection
• Low input bias current that remains constant over the entire common-mode voltage range
• Zero-drift architecture providing low offset voltage and drift for precise low VSENSE measurements

Applications

• DC/DC converter current monitoring
• Battery management systems (BMS)
• Fuel cell control units
• Smart junction boxes

Procurement Notes

Verify the specific suffix QDDFRQ1 corresponds to the SOT-23-8 package and automotive Grade 1 qualification (-40°C to 125°C). Confirm the 'Q1' designation aligns with AEC-Q100 requirements for your target application environment. Ensure reference documentation matches the latest revision date to account for any functional safety or packaging updates.

Selection Notes

Select this component when a fixed 50 V/V gain is required for high-side, inline, or low-side sensing. It is optimal for applications demanding high precision with minimal offset drift and wide common-mode voltage tolerance exceeding the supply rail. Consider the 1.1MHz bandwidth for fast overcurrent protection schemes requiring rapid signal processing.

Part Context

This part belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers. It shares architectural features with other gains in the series but is distinguished by its fixed 50 V/V internal gain setting. The device is designed for automotive environments, offering robust performance under varying thermal conditions and high common-mode voltages.

Replacement Considerations

Direct substitutes within the same family include INA296A1QDDFRQ1 (10 V/V), INA296A2QDDFRQ1 (20 V/V), INA296A4QDDFRQ1 (100 V/V), and INA296A5QDDFRQ1 (200 V/V). These parts share identical pinouts and packages but differ in fixed gain values.