INA293A3IDBVR

Overview

The INA293A3IDBVR is a unidirectional current sense amplifier from Texas Instruments, designed for high-voltage applications with a common-mode voltage range of -4 V to 110 V. It features a fixed gain of 100 V/V and an ultra-precise architecture with a maximum input offset voltage of 10 uV and a gain error of 0.02%. The device offers a bandwidth of 1.3 MHz and operates on a supply voltage between 2.7 V and 20 V, consuming 1.5 mA of quiescent current. It is housed in a compact SOT-23-5 package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Ultra-precision performance with low input offset voltage and minimal gain error for accurate measurement
• High common-mode voltage capability supporting systems up to 110 V
• Wide bandwidth suitable for high-speed current sensing applications

Applications

• Automotive battery management systems
• Industrial motor control circuits
• Power supply monitoring

Procurement Notes

Verify the specific suffix 'A3' indicates the 100 V/V gain configuration and 'Q1' or standard grade availability. Confirm the SOT-23-5 package type matches your PCB footprint requirements. Ensure the -4 V to 110 V common-mode range aligns with your system's bus voltage specifications before finalizing procurement.

Selection Notes

Select this component when high accuracy is required in high-voltage environments. The 100 V/V gain allows for significant signal amplification from small shunt voltages. Consider the 1.3 MHz bandwidth for dynamic load conditions. The SOT-23-5 package is ideal for space-constrained designs compared to larger packages.

Part Context

This part belongs to the INA293 family of ultra-precise current sense amplifiers. It shares architectural similarities with other members like the INA293A4IDBVR but differs in gain settings. The family is characterized by zero-drift technology and high common-mode rejection ratios, targeting demanding industrial and automotive sensing tasks.

Replacement Considerations

The INA293A3DBVR is the non-automotive qualified equivalent with identical electrical specifications. Other family members such as INA293A4IDBVR offer different gains (200 V/V) and should be evaluated based on specific circuit requirements.