INA296B2IDDFR

Overview

The INA296B2IDDFR is a bidirectional current sense amplifier from Texas Instruments, housed in an SOT-23-8 package. It features a fixed gain of 20 V/V and operates with a supply voltage range of 2.7V to 20V. The device supports a common-mode input voltage range from -5V to 110V. Key electrical specifications include a maximum offset voltage of ±150µV, a typical CMRR of 130dB, and a quiescent current of 2.5mA. It offers a bandwidth of 1.1MHz and a slew rate of 8V/µs.

Feature Summary

• Supports bidirectional operation for measuring current flow in both directions across a shunt resistor.
• Features a wide common-mode voltage range extending from -5V to 110V, independent of the supply voltage.
• Provides high-speed performance with a 1.1MHz signal bandwidth and fast settling time for transient detection.
• Delivers precision measurement capabilities with low offset voltage and high common-mode rejection ratio.

Applications

• 48V DC/DC Converter
• 48V battery management systems (BMS)
• Test & Measurement
• Macro remote radio unit (RRU)
• 48V rack server

Procurement Notes

Verify the specific suffix IDDFR corresponds to the SOT-23-8 package and tape-and-reel delivery format as documented in the manufacturer's ordering information. Confirm that the B version accuracy class meets the application requirements for gain error and offset voltage specifications before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 20 V/V gain is required for bidirectional current sensing applications. It is suitable for systems operating within a 2.7V to 20V supply range and requiring a common-mode voltage up to 110V. Consider the B version accuracy specifications if ultra-precise A version tolerances are not strictly necessary.

Part Context

This part belongs to the INA296x family of ultra-precise, bidirectional current sense amplifiers. The family includes variants with gains ranging from 10 V/V to 200 V/V and accuracy grades A and B. The INA296B2 specifically provides a 20 V/V gain with B-grade accuracy specifications, designed for high-voltage, high-speed current monitoring tasks.

Replacement Considerations

INA296A2IDDFR offers similar functionality with higher precision accuracy specifications. Other gain options within the INA296x family, such as INA296B1IDDFR or INA296B3IDDFR, may be considered if different gain factors are required while maintaining the same package and accuracy grade.