INA296B3IDGKR

Overview

The INA296B3IDGKR is a bidirectional current sense amplifier from Texas Instruments, featuring a fixed gain of 50 V/V. It operates with a common-mode voltage range from -5V to 110V and supports a supply voltage between 2.7V and 20V. The device offers a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical characteristics include a maximum gain error of ±0.1%, an input offset voltage of ±150µV, and a typical CMRR of 130dB. It draws 2.5mA of quiescent current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports bidirectional operation for high-side, low-side, and inline current sensing applications
• Provides high precision measurement through low offset voltage and wide common-mode rejection ratio
• Enables fast transient detection with a 1.1MHz bandwidth and 8V/µs slew rate
• Maintains constant input bias current across the entire common-mode voltage range

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 IDGKR corresponds to the VSSOP-8 package when sourcing. Confirm that the B3 designation matches the required 50V/V gain for your circuit design. Ensure the component meets RoHS compliance standards if applicable to your manufacturing requirements. Cross-reference the datasheet revision date to ensure all latest electrical specifications are considered during integration.

Selection Notes

Select this model when a fixed 50V/V gain is optimal for the shunt resistor value and output dynamic range. The B version provides higher accuracy than standard variants but lower precision than the A series. Consider the 1.1MHz bandwidth for applications requiring rapid overcurrent protection or transient detection. Verify that the 110V common-mode range aligns with the system bus voltage requirements.

Part Context

This component belongs to the INA296x family of ultra-precise current sense amplifiers. The family includes versions with gains ranging from 10V/V to 200V/V. The INA296B3 specifically targets applications needing moderate gain with high precision. It shares the same pinout and general architecture as other INA296x devices, facilitating easy integration into existing designs.

Replacement Considerations

INA296A3IDGKR offers similar functionality with tighter gain error and offset voltage specifications.