INA180A2IDBVR

Overview

The INA180A2IDBVR is a single-channel current sense amplifier from Texas Instruments, housed in an SOT-23-5 package. It features a fixed gain of 50 V/V and supports a wide common-mode voltage range from -0.2 V to 26 V. The device operates on a supply voltage between 2.7 V and 5.5 V with a maximum quiescent current of 260 µA. Key electrical specifications include a gain bandwidth product of 210 kHz, a slew rate of 2 V/µs, and an input offset voltage of 100 µV. It provides a common-mode rejection ratio of 100 dB and functions within an industrial temperature range of -40°C to +125°C.

Feature Summary

• Supports low-side and high-side current monitoring across a wide common-mode voltage range.
• Provides fixed internal gain options for simplified circuit design without external resistors.
• Delivers high precision with low input offset voltage and high common-mode rejection ratio.

Applications

• Motor control systems requiring precise phase current measurement.
• Battery management systems for charge and discharge monitoring.
• Industrial power supply load regulation and protection circuits.

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging when ordering. Confirm the 'I' designation matches the required industrial temperature range for your application environment. Ensure the A2 variant corresponds to the necessary 50 V/V gain setting. Cross-reference the SOT-23-5 footprint with your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when a fixed 50 V/V gain is optimal for the target current sense resistor value. Consider the 26 V common-mode limit to ensure compatibility with the system's bus voltage. Evaluate the 210 kHz bandwidth against the required signal response speed. Compare the 260 µA quiescent current against strict power budget requirements for battery-operated devices.

Part Context

This part belongs to the INA180 family of low-cost, high-bandwidth current sense amplifiers. It shares architectural similarities with the INA19x series but offers distinct gain configurations. The device integrates precision laser-trimmed resistors to maintain accuracy without external components. It serves as a compact alternative to discrete differential amplifier solutions in space-constrained designs.

Replacement Considerations

The INA180A2IDBVT is the tape-and-reel equivalent of this component. Other variants within the INA180 family offer different fixed gains such as 20 V/V or 100 V/V. Substitution requires verifying that the new gain factor aligns with the existing signal conditioning requirements.