INA296B5IDR

Overview

The INA296B5IDR is a bidirectional current sense amplifier from the Texas Instruments INA296B series. It features a gain of 200 V/V and operates with a common-mode voltage range of -5V to 110V. The device provides a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical specifications include a maximum gain error of ±0.1%, an input offset voltage of ±150µV, and a typical CMRR of 130dB. It functions on a single supply voltage between 2.7V and 20V, drawing a quiescent current of 2.5mA. The component is housed in an 8-pin SOIC package.

Feature Summary

• Supports bidirectional current sensing across a wide common-mode voltage range independent of the supply voltage.
• Delivers high-speed performance with a 1.1MHz bandwidth and fast settling time for transient detection.
• Maintains low input bias current that remains constant across the entire common-mode voltage range.

Applications

• 48V DC/DC converters
• 48V battery management systems (BMS)
• Test and measurement equipment
• Macro remote radio units (RRU)
• 48V rack server power supplies

Procurement Notes

Verify the specific suffix IDR corresponds to the SOIC-8 package configuration before procurement. Confirm that the B-series accuracy parameters meet the system requirements for gain error and offset voltage drift. Ensure the operating temperature range aligns with the application environment. Cross-reference the datasheet revision date to ensure compatibility with existing design documentation.

Selection Notes

Select this part when a fixed gain of 200 V/V is required for high-side or low-side current sensing. The B-series offers higher gain error tolerance compared to the A-series but maintains sufficient precision for many industrial applications. Consider the 1.1MHz bandwidth for applications requiring rapid overcurrent protection response. Verify that the output swing capabilities fit within the ADC input range of the downstream processing circuitry.

Part Context

This component belongs to the INA296x family of ultra-precise current sense amplifiers designed for high-voltage applications. The family includes variants with different gains and accuracy grades (A and B series). The INA296B5 specifically targets applications needing high gain and robust common-mode rejection without the ultra-low offset characteristics of the A-series.

Replacement Considerations

INA296B5IDGKR: Same electrical specifications and gain, but utilizes a VSSOP-8 package instead of SOIC-8. Verify pinout compatibility and thermal dissipation requirements when substituting packages.