INA250A3PW

Overview

The INA250A3PW is a precision current sense amplifier from Texas Instruments featuring an integrated shunt resistor. It operates with a supply voltage range of 2.7 V to 36 V and supports bidirectional current monitoring. The device offers high accuracy with a gain error of 0.05% and a maximum offset voltage of 1 mV. It functions within a temperature range of -40°C to +125°C and is housed in a 16-TSSOP package.

Feature Summary

• Integrates a precision shunt resistor to minimize board space and improve measurement consistency
• Supports bidirectional current sensing for both sourcing and sinking applications
• Provides high common-mode rejection ratio for accurate measurements in noisy environments

Applications

• Industrial process control systems requiring precise current monitoring
• Motor drive circuits for feedback and protection
• Power supply output current regulation

Procurement Notes

Verify the specific suffix 'A3' indicates the fixed gain configuration during procurement. Confirm the 16-TSSOP package availability matches assembly requirements. Check moisture sensitivity levels for reflow soldering profiles. Ensure the component meets RoHS compliance standards for the target market.

Selection Notes

Select this component when board space constraints necessitate an integrated shunt solution. Choose over discrete designs if consistent thermal matching between the shunt and amplifier is required. Consider the 36V common-mode voltage capability for higher voltage bus monitoring applications compared to lower voltage alternatives.

Part Context

This part belongs to the INA250 family of current sense amplifiers. It differs from standard amplifiers by including the sensing element on-chip. This integration reduces external component count and improves overall system accuracy by eliminating parasitic resistance effects associated with external shunts.

Replacement Considerations

INA250A1PWR: Different gain configuration. Verify gain requirements before substitution.