INA293A4QDBVRQ1

Overview

The INA293A4QDBVRQ1 is an automotive-grade ultra-precise current sense amplifier featuring a fixed gain of 200 V/V. It operates with a common-mode voltage range from -4 V to +110 V and supports supply voltages between 2.7 V and 20 V. The device provides a bandwidth of 900 kHz, a slew rate of 2.5 V/µs, and a quiescent current of 1.5 mA. Key electrical characteristics include a typical offset voltage of ±30 µV, a DC CMRR of 160 dB, and a maximum gain error of ±0.15%. It is housed in a space-saving SOT-23 package.

Feature Summary

• Ultra-precise zero-drift architecture for accurate low-voltage sensing
• Wide common-mode input range supporting negative voltages below ground
• High signal throughput designed for rapid overcurrent protection detection
• Fixed internal gain network ensuring excellent matching and low drift

Applications

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

Procurement Notes

Verify the specific 'A' suffix indicates the 200 V/V gain configuration and the 'Q1' designation confirms AEC-Q100 qualification. Ensure the DBVR package variant matches the required pinout orientation for your PCB layout. Confirm functional safety documentation availability if deploying in safety-critical automotive designs.

Selection Notes

Select this component when high precision is required alongside wide common-mode voltage handling. The 200 V/V gain allows for smaller shunt resistors, reducing power dissipation compared to lower gain options. Verify that the 900 kHz bandwidth meets the system's transient response requirements for fast fault detection.

Part Context

This part belongs to the INA293-Q1 family of ultra-precise current sense amplifiers. The family offers five gain options ranging from 20 V/V to 500 V/V. The 'A' series typically denotes tighter offset voltage specifications compared to the 'B' series within the same gain configuration.

Replacement Considerations

Other members of the INA293-Q1 family (INA293A1-Q1 through INA293A5-Q1) share identical pinouts and packages but offer different fixed gains.