INA296B1QDGSRQ1

Overview

The INA296B1QDGSRQ1 is an ultra-precise, bidirectional current sense amplifier from Texas Instruments, qualified to AEC-Q100 standards for automotive applications. It features a wide common-mode voltage range of -5 V to +110 V and a survival voltage up to +120 V. The device offers a gain of 20 V/V, a gain error of 0.002%, and a CMRR of 150 dB. It operates on a single supply voltage between 2.7 V and 20 V with a typical quiescent current of 2.5 mA. The input offset voltage is 5 uV, and the bandwidth is 1.1 MHz. It is housed in a 10-TFSOP package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Ultra-precision bidirectional measurement capability for accurate current sensing across shunt resistors
• Wide common-mode voltage operation supporting high-side configurations in demanding environments
• Automotive qualification ensuring reliability under strict AEC-Q100 standards

Applications

• Automotive battery management systems
• Motor control circuits
• High-side current monitoring in power distribution units

Procurement Notes

Verify the specific suffix QDGSRQ1 matches the required package (10-TFSOP) and reel quantity. Confirm AEC-Q100 grade requirements align with your system's automotive safety integrity level. Ensure the operating voltage range covers your application's peak common-mode conditions. Check for lead-free RoHS compliance if mandated by your manufacturing process.

Selection Notes

Select this component when high accuracy and wide common-mode voltage are critical. The 20 V/V gain provides sufficient output swing for most ADCs without external amplification. Consider the 150 dB CMRR for noisy environments. Compare against INA296A1 variants if lower cost or different gain options are needed. Verify thermal performance in the TFSOP package for your specific PCB layout.

Part Context

This part belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers designed for automotive use. It complements other TI current sense solutions like the INA241 series but offers higher precision and wider common-mode voltage tolerance. The family supports various gain options and packages to suit different board space and accuracy requirements.

Replacement Considerations

Direct substitutes include other INA296 variants with matching gain and package, such as INA296A1QDRQ1, though pinout and electrical specs must be verified. Cross-referencing with INA241 series parts requires checking gain and CMRR differences.