INA190A5IRSWR

Overview

The INA190A5IRSWR is a bidirectional current sense amplifier from Texas Instruments featuring a fixed gain of 500 V/V. It operates with a supply voltage range of 1.7V to 5.5V and supports common-mode voltages from -200mV to 40V. Key electrical specifications include a maximum input offset voltage of ±15µV, a typical input bias current of 500pA, and a bandwidth of 27kHz. The device offers high precision with a gain error of 0.08% and consumes 65µA of quiescent current.

Feature Summary

• Ultra-precise bidirectional current sensing with picoampere-level input bias current
• High common-mode voltage tolerance independent of supply voltage
• Low offset voltage architecture for extended dynamic range

Applications

• Overcurrent protection in portable electronics
• Precision current measurement for system optimization
• Closed-loop feedback control circuits

Procurement Notes

Verify the specific suffix IRSWR against the manufacturer datasheet to confirm the SC-70-6 package and tape-and-reel configuration. Ensure the A5 designation matches the required 500 V/V gain for your circuit design. Cross-reference the full part number with official TI documentation to validate temperature ratings and RoHS compliance status before procurement.

Selection Notes

Select this component when high gain is necessary to amplify small differential signals across low-value shunt resistors. The 500 V/V gain factor makes it suitable for detecting microampere currents. Consider the SC-70-6 package size if board space is limited. Verify that the 40V common-mode range aligns with the highest voltage present at the sense inputs during operation.

Part Context

This device belongs to the INA190 family of ultra-precise current sense amplifiers. The family provides multiple gain options (25, 50, 100, 200, 500 V/V) to accommodate various sensing requirements. The INA190 series is designed for battery-powered applications due to its low power consumption and wide operating temperature range.

Replacement Considerations

Other variants within the INA190 family, such as INA190A3 or INA190A4, offer different fixed gains (100 V/V or 200 V/V). Substitution requires verifying that the alternative gain meets the signal conditioning requirements of the application.