INA293A3QDBVRQ1

Overview

The INA293A3QDBVRQ1 is an ultra-precise current sense amplifier designed for automotive applications. It features a wide common-mode voltage range from -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 offset voltage of ±50 µV and a maximum gain error of ±0.15%. It offers a bandwidth of 1 MHz, a slew rate of 2.5 V/µs, and a quiescent current of 1.5 mA. Packaged in a space-saving SOT-23-5 format, it supports high-speed overcurrent protection.

Feature Summary

• Supports negative common-mode voltages down to -4 V, enabling precise measurement of recirculating currents in half-bridge configurations.
• Features a zero-drift input architecture that ensures low offset voltage and minimal drift across the full operating temperature range.
• Provides high signal throughput with a 1.3-MHz bandwidth and fast slew rate for rapid detection of overcurrent events.

Applications

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

Procurement Notes

Verify the specific suffix 'A3' confirms the 100 V/V gain setting required for your design. Ensure the DBVR package variant matches your PCB footprint requirements. Confirm AEC-Q100 qualification aligns with your automotive reliability standards before finalizing procurement.

Selection Notes

Select this component when high precision is required alongside a wide common-mode input range extending below ground. The fixed 100 V/V gain suits applications needing significant signal amplification without external resistors. Consider the 1.5 mA quiescent current against system power budgets.

Part Context

This part belongs to the INA293-Q1 family of ultra-precise current sense amplifiers. It shares the same core topology and specifications as other gain variants within the series, differing primarily in the internal resistor network that sets the closed-loop gain. It is designed for robust performance in harsh automotive environments.

Replacement Considerations

Direct substitutes include other INA293-Q1 variants such as INA293A1QDBVRQ1 (20 V/V), INA293A2QDBVRQ1 (50 V/V), INA293A4QDBVRQ1 (200 V/V), and INA293A5QDBVRQ1 (500 V/V). Verify that the different gain factors meet your output swing and sensitivity requirements.