INA129U/2K5

Overview

The INA129U/2K5 is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel housed in an 8-pin SOIC package with a green plastic body. The device operates on supply voltages ranging from 4.5 V to 36 V or ±2.25 V to ±18 V. Key electrical characteristics include a 1.3 MHz bandwidth, a 4 V/µs slew rate, and a maximum input offset voltage of 1125 µV. It draws 700 µA of operating current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Precision instrumentation amplifier design
• Low power consumption architecture
• High common-mode rejection capability

Applications

• Industrial process control systems
• Medical equipment signal conditioning
• Weight scale load cell interfaces
• Data acquisition modules

Procurement Notes

Verify the specific suffix configuration against official manufacturer documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the component meets all required environmental standards for your intended deployment environment before finalizing procurement orders.

Selection Notes

Select this component when high precision and low power are critical requirements. Ensure the application demands a wide supply voltage range and sufficient bandwidth for the signal frequencies involved. Verify that the package type matches the PCB layout constraints.

Part Context

This part belongs to the INA12x series of instrumentation amplifiers from Texas Instruments. The series is known for combining high accuracy with low power consumption, making it suitable for battery-operated and portable applications requiring precise signal amplification.

Replacement Considerations

Official substitutes include the INA128UA/2K5 and INA129UA. Verify pin compatibility and electrical parameter alignment with the original datasheet before implementing any replacement in existing designs.