INA250A2PWR

Overview

The INA250A2PWR is a bidirectional current sense amplifier from Texas Instruments featuring an integrated precision shunt resistor. It operates within a supply voltage range of 2.7 V to 36 V and supports common-mode voltages up to 80 V. The device provides a gain of 20 V/V with a maximum accuracy of 0.3%. It functions in temperatures from -40°C to +125°C, draws 350 µA of quiescent current, and is housed in a 16-pin TSSOP package.

Feature Summary

• Integrates a precision shunt resistor to simplify PCB layout and reduce component count
• Supports bidirectional current measurement for both high-side and low-side configurations
• Utilizes zero-drift architecture to maintain high accuracy across temperature variations

Applications

• Industrial process control systems requiring precise current monitoring
• Motor drive circuits for feedback and protection
• Power supply management and overcurrent detection

Procurement Notes

Verify the specific suffix 'A2' indicates the 20 V/V gain configuration. Confirm the 'PWR' suffix corresponds to the TSSOP-16 package type. Ensure compatibility with the target operating voltage range of 2.7 V to 36 V. Check moisture sensitivity levels for proper storage and reflow soldering profiles.

Selection Notes

Select this component when board space is limited due to the integrated shunt resistor. Choose this part for applications requiring bidirectional sensing without external resistors. Consider the 0.3% accuracy specification for precision requirements. Evaluate the 350 µA quiescent current against power budget constraints.

Part Context

This device belongs to the INA250 family of current sense amplifiers. It differs from standard amplifiers by including an internal shunt resistor. This integration distinguishes it from discrete solutions or other amplifiers like the INA240 which require external components for similar functionality.

Replacement Considerations

INA250A2PWRG4 is a lead-free variant of the same functional device.