INA293B4IDBVR

Overview

The INA293B4IDBVR is a unidirectional current sense amplifier from Texas Instruments, housed in an SOT-23-5 package. It features a fixed gain of 200 V/V and supports a common-mode voltage range from -4 V to 110 V. The device offers a bandwidth of 900 kHz with a gain-bandwidth product of 900 kHz. Key electrical specifications include a maximum input offset voltage of 2 uV, a maximum input bias current of 20 uA, and a typical CMRR of 160 dB. It operates on a supply voltage between 2.7 V and 20 V, consuming 1.5 mA of quiescent current. The component is rated for operation between -40°C and +125°C.

Feature Summary

• Provides high accuracy with ultra-low input offset voltage and low noise density for precise current monitoring.
• Supports high common-mode voltages up to 110 V, enabling flexible placement in high-side or low-side configurations.
• Features a wide bandwidth of 900 kHz for fast transient response in dynamic load applications.

Applications

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

Procurement Notes

Verify the specific suffix 'IDBVR' corresponds to the industrial temperature grade and tape-and-reel packaging configuration. Confirm that the 'B4' designation aligns with the required 200 V/V gain setting for your circuit design. Ensure compatibility with the -4 V to 110 V common-mode range before finalizing procurement.

Selection Notes

Select this component when a fixed 200 V/V gain is required for high-side current sensing in automotive or industrial environments. It is suitable for applications demanding high precision with minimal offset error and wide bandwidth. Consider the SOT-23-5 package constraints for PCB layout if space is limited.

Part Context

This part belongs to the INA293 family of ultra-precise current sense amplifiers designed for high-voltage applications. It shares architectural similarities with other variants like the INA293A4IDBVR but differs in precision grades and specific gain options within the series.

Replacement Considerations

The INA293A4IDBVR serves as a comparable alternative within the same family, offering similar functionality with potentially different precision grades. Verify gain stability and offset voltage requirements when substituting.