INA296A5QDGSRQ1

Overview

The INA296A5QDGSRQ1 is a bidirectional current sense amplifier from Texas Instruments, designed for high-precision measurements in automotive and industrial environments. It operates with a common-mode voltage range of -5 V to 110 V, independent of the supply voltage. The device features a fixed gain of 200 V/V, enabling accurate detection of small differential voltages across shunt resistors. Key electrical specifications include a maximum input offset voltage of 2 µV, an input bias current of 45 µA, and a gain error of 0.003%. It offers a bandwidth of 1.1 MHz and consumes 2.5 mA of supply current. The component is housed in an 8-pin VSSOP package and meets AEC-Q100 qualification standards for automotive applications.

Feature Summary

• Supports bidirectional current sensing within a wide common-mode voltage range of -5 V to 110 V
• Delivers ultra-high precision with a maximum gain error of 0.003% and low input offset voltage
• Provides fast transient response with a 1.1 MHz bandwidth and 8 V/µs slew rate
• Optimized for space-constrained designs using compact surface-mount packaging

Applications

• High-side or low-side current monitoring in automotive power distribution systems
• Overcurrent protection circuits requiring rapid fault detection
• Battery management systems in electric vehicles
• Industrial motor control and drive applications

Procurement Notes

Verify that the specific suffix 'DGSR' corresponds to the VSSOP-8 package and tape-and-reel orientation required by your assembly line. Confirm that the 'Q1' designation aligns with your project's automotive reliability standards. Ensure the operating temperature range of -40°C to +125°C matches your environmental constraints. Cross-reference the datasheet revision date to guarantee compatibility with your design specifications.

Selection Notes

Select this component when a fixed gain of 200 V/V is necessary to maximize signal resolution for small shunt voltages. The 2 µV offset voltage makes it suitable for applications demanding minimal measurement error at low currents. Consider the 1.1 MHz bandwidth if fast settling times are critical for protecting sensitive loads. Compare against other gain variants if the output swing requirements differ from this specific configuration.

Part Context

This part belongs to the INA296x-Q1 family of ultra-precise, bidirectional current-sense amplifiers. The series provides multiple gain options (10 V/V to 200 V/V) to accommodate various shunt resistor values and dynamic range requirements. All members share the same wide common-mode voltage capability and high CMRR, ensuring consistent performance across different gain configurations in complex power architectures.

Replacement Considerations

Direct substitutes within the same family include INA296A4QDRQ1 (100 V/V gain, SOIC-8) and INA296A3QDRQ1 (50 V/V gain, SOIC-8). Note that these alternatives have different gains and packages, requiring schematic and layout modifications. Non-family replacements must be evaluated for matching common-mode voltage limits and accuracy specifications.