INA296B5QDGSRQ1

Overview

The INA296B5QDGSRQ1 is a bidirectional current sense amplifier from Texas Instruments, designed for high-precision measurements in automotive and industrial applications. It operates with a common-mode voltage range of -5 V to 110 V, independent of supply voltage. The device features a fixed gain of 200 V/V, enabling accurate detection of small voltage drops across shunt resistors. Key electrical specifications include a maximum gain error of 0.1%, a typical CMRR of 166 dB, and an input offset voltage of 25 µV. It supports a bandwidth of 1.1 MHz and functions on a single supply voltage between 2.7 V and 20 V, consuming 2.5 mA of supply current.

Feature Summary

• Supports bidirectional current sensing within a wide common-mode voltage range of -5 V to 110 V
• Delivers ultra-high precision with low gain error and minimal input offset voltage drift
• Provides fast transient response with a 1.1 MHz signal bandwidth and rapid settling time
• Features excellent common-mode rejection ratio to maintain accuracy under noisy conditions

Applications

• High-side current monitoring in automotive power distribution systems
• Overcurrent protection circuits requiring fast fault detection
• Precision battery management systems in electric vehicles
• Industrial motor control and drive applications

Procurement Notes

Verify the complete part number including the Q1 suffix to confirm AEC-Q100 automotive qualification status. Ensure the B5 suffix corresponds to the required 200 V/V gain specification for your design. Confirm the DGSR package variant matches your PCB footprint requirements. Check the latest datasheet revision for any updates regarding operating temperature ranges or recommended soldering profiles.

Selection Notes

Select this component when high accuracy is critical in high-voltage environments. The B version offers a balance of precision and cost compared to the A version. The 200 V/V gain is suitable for applications using low-value shunt resistors where maximizing output swing is necessary. Consider the VSSOP-8 package size constraints during layout planning to ensure adequate thermal dissipation and signal integrity.

Part Context

This device belongs to the INA296x family of ultra-precise bidirectional current sense amplifiers. The Q1 designation indicates compliance with AEC-Q100 standards for automotive grade reliability. The B5 suffix specifies the 200 V/V gain option within the series. These amplifiers are engineered to replace discrete solutions, offering superior performance in compact surface-mount packages for modern electronic systems.

Replacement Considerations

Direct substitutes within the same family include INA296B5IDGKR for non-automotive use. For higher precision requirements, consider the INA296A5 series. Verify pin compatibility and gain settings before swapping with other current sense amplifiers from different manufacturers.