INA296A1IDDFR

Overview

The INA296A1IDDFR is a bidirectional current sense amplifier from Texas Instruments, housed in an SOT-23-8 package. It features a fixed gain of 10V/V and operates with a supply voltage range of 2.7V to 20V. The device supports a wide common-mode input voltage range from -5V to 110V. Key electrical specifications include a typical bandwidth of 1.1MHz, a slew rate of 8V/µs, and a maximum offset voltage of ±20µV. It draws a quiescent current of 2.5mA and functions within an ambient temperature range of -40°C to +125°C.

Feature Summary

• Ultra-precise zero-drift architecture providing low offset voltage and minimal drift across the operating temperature range.
• High small-signal bandwidth of 1.1MHz maintained at all gain settings for rapid transient detection.
• Wide common-mode voltage range extending from -5V to 110V, independent of the power supply voltage.
• Configurable output reference pins allowing flexible unidirectional or bidirectional measurement modes.

Applications

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

Procurement Notes

Verify the specific suffix IDDFR corresponds to the SOT-23-8 package variant when sourcing. Confirm that the A1 designation matches the required 10V/V gain for your circuit design. Ensure the component meets the -40°C to +125°C operating temperature requirements for your specific environment. Cross-reference the datasheet revision date to ensure compatibility with any recent design updates or errata.

Selection Notes

Select this component when high precision and fast response are critical in high-voltage environments. The 10V/V gain is suitable for applications requiring moderate signal amplification with low noise. Consider the SOT-23-8 package constraints for thermal management and PCB space. Evaluate the 1.1MHz bandwidth against your system's switching frequencies to prevent aliasing or instability.

Part Context

This part belongs to the INA296x family of ultra-precise current sense amplifiers designed for high-side, inline, and low-side sensing. The 'A' version denotes tighter accuracy specifications compared to the 'B' version, specifically regarding offset voltage and gain error. The IDDFR suffix indicates the specific surface-mount packaging and reel configuration provided by the manufacturer.

Replacement Considerations

Direct replacements within the same family include INA296A2IDDFR (20V/V), INA296A3IDDFR (50V/V), INA296A4IDDFR (100V/V), and INA296A5IDDFR (200V/V). These share identical pinouts and functionality but differ in fixed internal gain. Verify that the alternative gain factor aligns with your shunt resistor value and desired output voltage swing.