INA293B5IDBVR

Overview

The INA293B5IDBVR is a unidirectional current sense amplifier from Texas Instruments, housed in a 5-pin SOT-23 package. It supports a common-mode voltage range of -4 V to 110 V and operates on a supply voltage between 2.7 V and 20 V. The device features a fixed gain of 500 V/V, a 3-dB bandwidth of 900 kHz, and a typical input offset voltage of 2 µV. It delivers a common-mode rejection ratio of 160 dB and maintains an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Supports high common-mode voltages up to 110 V for flexible system integration
• Provides ultra-precise measurement with low input offset voltage and high CMRR
• Features high bandwidth for accurate detection of fast transient currents

Applications

• Industrial motor control systems
• Power supply output monitoring
• Overcurrent protection circuits

Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct gain and package specifications. Confirm that the component meets required environmental standards and operational voltage ranges for the specific application design before procurement.

Selection Notes

Select this component when a fixed high gain of 500 V/V is required for unidirectional sensing. Ensure the application demands a common-mode voltage capability exceeding standard operational amplifiers and fits within the compact SOT-23 footprint constraints.

Part Context

This device belongs to the INA293 family of precision current sense amplifiers designed for high-side or low-side sensing applications. It offers a trade-off between precision and speed, suitable for systems requiring robust performance in electrically noisy environments with high voltage differentials.

Replacement Considerations

Check for compatible alternatives such as the INA293A5IDBVR or automotive-grade variants like the INA293B5QDBVRQ1 if AEC-Q100 qualification is necessary. Verify pin compatibility and electrical parameter alignment before substitution.