INA293B5IDBVT

Overview

The INA293B5IDBVT is a unidirectional current sense amplifier from Texas Instruments, housed in a SOT-23-5 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 draws 1.5 mA of operating current and maintains a CMRR of 160 dB with a gain error of 0.02%. The component functions reliably within an ambient temperature range of -40 °C to +125 °C.

Feature Summary

• Ultra-precise performance characterized by low input offset voltage and minimal gain error for high accuracy.
• High common-mode voltage capability enabling direct sensing in systems up to 110 V.
• Wide bandwidth supporting fast transient response for dynamic current monitoring applications.

Applications

• Industrial motor control systems
• Power supply output current monitoring
• Battery management systems

Procurement Notes

Verify the specific suffix IDBVT indicates tape-and-reel packaging when sourcing components. Confirm that the B5 variant corresponds to the required 500 V/V gain configuration for your circuit design. Ensure compatibility with the specified SOT-23-5 footprint during PCB layout. Cross-reference the manufacturer datasheet for absolute maximum ratings to prevent operational damage.

Selection Notes

Select this component when high precision is required alongside high common-mode voltage tolerance. The 500 V/V gain suits applications with small differential signals across the shunt resistor. Consider the 900 kHz bandwidth for applications requiring faster response times than lower-bandwidth alternatives. Verify thermal dissipation requirements given the compact SOT-23-5 package size.

Part Context

This part belongs to the INA293 family of ultra-precise current sense amplifiers designed for demanding industrial environments. It complements other variants like the INA293A4IDBVT which offers different gain settings. The series emphasizes accuracy and robustness for critical power monitoring tasks where standard amplifiers may fail due to high common-mode voltages.

Replacement Considerations

INA293B5IDBVR serves as a reel-compatible alternative within the same package type. For automotive applications, consider the AEC-Q100 qualified INA293B5QDBVRQ1. Verify pinout and electrical specifications match before substituting any related INA293 family members.