INA296A2QDGKRQ1

Overview

The INA296A2QDGKRQ1 is an ultra-precise, bidirectional current sense amplifier from Texas Instruments. It features a wide common-mode voltage range of -5V to 110V and operates on a single supply of 2.7V to 20V. The device offers a fixed gain of 20V/V with a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical characteristics include a maximum offset voltage of ±3µV, a typical CMRR of 166dB, and a maximum gain error of ±0.01%. It is AEC-Q100 qualified for Grade 1 operation across a temperature range of -40°C to +125°C.

Feature Summary

• Ultra-precise bidirectional measurement capability over a wide common-mode voltage range independent of supply voltage
• High-speed performance with 1.1MHz bandwidth and fast settling time suitable for transient detection
• Low input bias current that remains constant across the entire common-mode voltage range
• Zero-drift topology ensuring low offset voltage and drift for accurate low VSENSE measurements

Applications

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

Procurement Notes

Verify the specific suffix QDGKRQ1 corresponds to the VSSOP-8 package and tape-and-reel packaging configuration. Confirm AEC-Q100 Grade 1 qualification status for automotive reliability requirements. Ensure functional safety documentation is requested if the design requires ISO 26262 compliance support. Check for any recent datasheet revisions that may impact thermal or electrical specifications.

Selection Notes

Select this component when a fixed 20V/V gain is required for optimal dynamic range with specific shunt resistor values. The 1.1MHz bandwidth supports high-frequency transient detection and fast overcurrent protection loops. Consider the VSSOP-8 package constraints for PCB layout and thermal dissipation. Verify that the system supply voltage falls within the 2.7V to 20V operating range while accommodating the output swing limitations near the rails.

Part Context

This part belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers designed for high-voltage automotive and industrial applications. The 'A' designation indicates Version A accuracy with tighter offset and gain error specifications compared to Version B. The 'Q1' suffix denotes AEC-Q100 qualification for automotive use. The 'DGK' identifier specifies the 8-pin VSSOP package option.

Replacement Considerations

INA296A2QDRQ1: Same gain and accuracy but in SOIC-8 package. INA296A2QDDFRQ1: Same gain and accuracy but in SOT-23-8 package. INA296B2QDGKRQ1: Lower accuracy specifications (Version B) in the same VSSOP-8 package.