INA293B4IDBVT

Overview

The INA293B4IDBVT is a unidirectional current sense amplifier from Texas Instruments, housed in a 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 settling time of 10 µs. Key electrical specifications include an input offset voltage of 5 µV, a common-mode rejection ratio of 160 dB, and a gain error of 0.02%. It operates on a supply voltage between 2.7 V and 20 V, consuming 1.5 mA of quiescent current, and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides ultra-precise current sensing with high accuracy through low input offset voltage and minimal gain error.
• Supports high common-mode voltages up to 110 V, enabling flexible placement in high-side or low-side configurations.
• Delivers fast transient response with a 900 kHz bandwidth and 10 µs settling time for dynamic load monitoring.

Applications

• Industrial motor control systems requiring precise current feedback
• Power supply output current monitoring
• Battery management systems in portable electronics

Procurement Notes

Verify the specific suffix IDBVT indicates tape-and-reel packaging when sourcing. Confirm the B-grade accuracy class matches design requirements for offset voltage and gain error tolerances. Ensure the operating environment stays within the specified -40°C to +125°C thermal limits. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when high common-mode voltage tolerance is required alongside precision measurement capabilities. The fixed 200 V/V gain simplifies circuit design by eliminating external resistor networks. Consider the SOT-23-5 package size for space-constrained layouts. Compare against A-grade variants if tighter offset voltage specifications are necessary for the application.

Part Context

This part belongs to the INA293 family of current sense amplifiers designed for high-voltage applications. It complements other devices like the INA293A4IDBVT by offering similar performance characteristics with specific manufacturing grade variations. The series targets industrial and automotive environments where reliability and accuracy are critical for system protection and efficiency monitoring.

Replacement Considerations

The INA293A4IDBVT serves as a direct functional substitute within the same family, sharing identical pinouts and core specifications. Verify that the alternative grade meets the specific offset voltage and gain error requirements of the design before substitution.