INA296B2QDGKRQ1

Overview

The INA296B2QDGKRQ1 is an AEC-Q100 qualified, bidirectional current sense amplifier with a gain of 20 V/V. It operates over a common-mode voltage range of -5V to 110V and supports supply voltages from 2.7V to 20V. Key electrical characteristics include a typical CMRR of 130 dB, maximum offset voltage of ±150µV, and quiescent current of 2.5mA. The device features a 1.1MHz bandwidth, 8V/µs slew rate, and 1µs settling time to 1%. It is housed in an 8-pin VSSOP package.

Feature Summary

• AEC-Q100 Grade 1 qualification for automotive applications operating between -40°C and 125°C
• Bidirectional operation with wide common-mode voltage range from -5V to 110V
• High-speed performance including 1.1MHz bandwidth and 8V/µs slew rate
• Ultra-precise architecture with low offset voltage and high CMRR

Applications

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

Procurement Notes

Verify the specific suffix QDGKRQ1 corresponds to the VSSOP-8 package and Grade 1 temperature rating (-40°C to 125°C). Confirm functional safety documentation availability if required for system design. Ensure input common-mode voltage does not exceed 110V during operation.

Selection Notes

Select this component when a fixed 20 V/V gain is required for bidirectional sensing. The B-series offers higher offset voltage limits compared to the A-series but maintains high speed. Suitable for applications requiring fast transient detection and precise measurement across a wide common-mode range independent of the supply voltage.

Part Context

Part of the INA296x-Q1 family of ultra-precise, bidirectional current sense amplifiers. Designed for high-voltage DC current measurements in automotive environments. The 'B' designation indicates specific accuracy grades regarding offset voltage and gain error drift compared to the 'A' series variants within the same product line.

Replacement Considerations

INA296A2QDGKRQ1: Offers tighter precision specifications (lower offset and gain error) but shares identical pinout, gain, and package.

FAQ

What is the maximum survival voltage for the INA296B2QDGKRQ1?

The device supports a survival voltage range of -20V to 120V.

How does the input bias current behave across the common-mode range?

The input bias current remains constant at approximately 35µA (typical) across the entire common-mode voltage range from -5V to 110V.