INA296B4QDGKRQ1

Overview

The INA296B4QDGKRQ1 is an ultra-precise, bidirectional current sense amplifier from the Texas Instruments INA296x-Q1 family. It features a gain of 100 V/V and operates with a common-mode voltage range of -5V to 110V. The device supports a supply voltage between 2.7V and 20V, drawing a typical quiescent current of 2.5mA. Key electrical specifications include a small-signal bandwidth of 1.1MHz, a slew rate of 8V/µs, and a maximum gain error of ±0.1%. It is housed in an 8-pin VSSOP package and is qualified for automotive applications under AEC-Q100 standards.

Feature Summary

• Bidirectional operation enables accurate measurement of current flow in both directions across shunt resistors.
• Wide common-mode voltage range allows high-side, low-side, and inline sensing independent of the supply voltage.
• High-speed performance with 1.1MHz bandwidth and fast settling time supports transient detection and overcurrent protection.
• Ultra-precise architecture minimizes offset voltage and drift for accurate low-voltage drop measurements.

Applications

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

Procurement Notes

Verify the specific suffix DGKR indicates the VSSOP-8 package and tape-and-reel shipping configuration. Confirm the B4 designation corresponds to the 100 V/V fixed gain option. Ensure the Q1 suffix matches the required AEC-Q100 automotive qualification grade. Cross-reference the manufacturer part number against official datasheets to validate pinout and thermal characteristics before integration.

Selection Notes

Select this component when bidirectional current sensing is required within a wide common-mode voltage environment. The 100 V/V gain is suitable for applications needing moderate signal amplification while maintaining high bandwidth. Consider the VSSOP-8 package constraints for PCB layout. Evaluate if the ±0.1% gain error meets system accuracy requirements compared to higher precision variants.

Part Context

This device belongs to the INA296x-Q1 series of ultra-precise current sense amplifiers designed for automotive environments. The series offers multiple gain options ranging from 10 V/V to 200 V/V. The 'B' variant provides slightly higher offset voltage limits compared to the 'A' variant but maintains high speed and wide common-mode rejection capabilities.

Replacement Considerations

INA296A4QDGKRQ1: Offers higher precision with lower offset voltage and gain error. INA296B5QDGKRQ1: Provides 200 V/V gain for higher sensitivity. INA296B3QDGKRQ1: Features 50 V/V gain. Verify package compatibility and gain requirements when substituting.