INA250A2QPWRQ1

Overview

The INA250A2QPWRQ1 is a bidirectional, zero-drift current-shunt monitor featuring a precision integrated shunt resistor. It operates with a supply voltage range of 2.7 V to 5.5 V and supports common-mode voltages from -4 V to 36 V. The device provides a unipolar output proportional to the sensed current, offering high accuracy suitable for automotive applications. It is housed in a TSSOP-16 package and meets AEC-Q100 qualification standards.

Feature Summary

• Integrates a precision shunt resistor to eliminate external component variations
• Zero-drift architecture ensures stable performance across temperature ranges
• Bidirectional sensing capability allows detection of current flow in both directions
• Automotive-grade reliability compliant with AEC-Q100 standards

Applications

• High-side or low-side current monitoring in automotive systems
• Battery management systems requiring precise charge/discharge measurement
• Motor control circuits with bidirectional current requirements
• Electric vehicle charging infrastructure components

Procurement Notes

Verify that the specific suffix 'Q1' confirms AEC-Q100 automotive qualification status directly on the manufacturer's official datasheet. Ensure the package designation matches the required TSSOP-16 footprint for your PCB layout. Confirm the integrated shunt resistance value aligns with your system's power dissipation and sensitivity requirements before finalizing procurement.

Selection Notes

Select this component when a compact solution integrating both amplification and sensing elements is required. The integrated shunt reduces board space and improves accuracy by removing tolerance mismatches between separate resistors and amplifiers. Consider the 36 V common-mode limit and ensure it exceeds your maximum bus voltage. Verify that the unipolar output format fits your ADC input range without requiring additional signal conditioning.

Part Context

This part belongs to the Texas Instruments INA250 family of current-shunt monitors designed for high-precision applications. Unlike standard amplifiers, these devices combine the sense amplifier and the shunt resistor into a single package. This integration minimizes errors caused by thermal gradients and resistor tolerance mismatches, making them ideal for applications where space and accuracy are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers: None identified.