INA293B3QDBVRQ1

Overview

The INA293B3QDBVRQ1 is an ultra-precise current sense amplifier from Texas Instruments, qualified under AEC-Q100 standards for automotive applications. It features a wide common-mode voltage range of -4 V to +110 V and operates on a single supply voltage between 2.7 V and 20 V. The device provides a fixed gain of 100 V/V with a typical bandwidth of 1 MHz and a quiescent current of 1.5 mA. It utilizes a zero-drift architecture to ensure high accuracy across the specified temperature range.

Feature Summary

• AEC-Q100 qualified for automotive environments with functional safety capability
• Wide common-mode input range supporting operation from -4 V to +110 V
• Ultra-precise zero-drift topology ensuring low offset voltage and drift
• High signal throughput suitable for fast over-current protection

Applications

• 48-V automotive systems
• Solenoid control circuits
• 48-V DC/DC converters
• Valve control applications

Procurement Notes

Verify the specific suffix 'B3' confirms the 100 V/V gain configuration before procurement. Ensure the DBVR package variant matches the required PCB footprint. Confirm that the component meets the specific AEC-Q100 grade requirements for the target automotive application environment.

Selection Notes

Select this part when a fixed 100 V/V gain is required for precise current sensing. Consider the 1000 ns settling time for system response speed requirements. Evaluate the 1.5 mA quiescent current against power budget constraints. Verify compatibility with the -4 V to +110 V common-mode voltage range of the shunt resistor.

Part Context

This component belongs to the INA293-Q1 family of ultra-precise current sense amplifiers. It shares the same core architecture and package options as other variants in the series, differing primarily in internal gain settings. The B3 designation specifically indicates the 100 V/V gain option within the broader product line.

Replacement Considerations

INA293A3QDBVRQ1