INA296A1QDRQ1

Overview

The INA296A1QDRQ1 is a bidirectional, ultra-precise current-sense amplifier from Texas Instruments, designed for high-voltage applications. It operates with a common-mode voltage range of -5 V to 110 V and supports a supply voltage between 2.7 V and 20 V. The device features a fixed gain of 10 V/V, a 1.1 MHz bandwidth, and a maximum input offset voltage of 5 µV. It is qualified under AEC-Q100 standards for automotive use and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports bidirectional current measurement across a wide common-mode voltage range of -5 V to 110 V.
• Delivers ultra-precision performance with low input offset voltage and minimal gain error.
• Provides fast transient response with a 1.1 MHz signal bandwidth and rapid settling time.
• Meets AEC-Q100 qualification requirements for robust automotive environment reliability.

Applications

• High-side or low-side current sensing in automotive power distribution systems
• Battery management systems requiring precise bidirectional current monitoring
• Motor control circuits needing fast overcurrent protection detection
• Industrial motor drives and inverters with high common-mode voltages

Procurement Notes

Verify the specific suffix QDRQ1 confirms AEC-Q100 automotive qualification and SOIC-8 packaging. Ensure the design accounts for the 10 V/V fixed gain setting. Confirm moisture sensitivity level handling during assembly. Cross-reference the datasheet for thermal dissipation requirements in the selected package. Validate that the -5 V to 110 V common-mode range matches the system's rail specifications.

Selection Notes

Select this component when bidirectional sensing is required alongside high common-mode voltage tolerance. The 10 V/V gain suits applications where the shunt voltage is relatively large compared to the ADC reference. Consider the 5 µV offset voltage for high-accuracy low-current measurements. The 1.1 MHz bandwidth allows for detecting fast transients in switching power supplies. Evaluate the SOIC-8 footprint against available PCB space constraints.

Part Context

This part belongs to the INA296x family of super-precision bidirectional current-sense amplifiers. The 'A' designation indicates tighter accuracy specifications compared to standard variants. The 'Q1' suffix denotes automotive grade qualification. The 'DRQ1' suffix specifies the SOIC-8 package and tape-and-reel delivery format suitable for automated assembly processes.

FAQ

Is the INA296A1QDRQ1 capable of measuring negative currents?

Yes, it is a bidirectional amplifier designed to measure both positive and negative currents flowing through the sense resistor.

What is the fixed voltage gain of this specific model?

The INA296A1 variant has a fixed internal gain of 10 V/V.

Does this device support operation below ground potential on the common-mode pin?

Yes, it supports a common-mode voltage range starting from -5 V, allowing operation in negative voltage environments.