INA129UA

Overview

The INA129UA is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a 3dB bandwidth of 1.3 MHz and a slew rate of 4 V/us. Key electrical specifications include a common-mode rejection ratio of 120 dB, input bias current of 5 nA, and input offset voltage of 50 uV. The device operates on a supply voltage range from 4.5 V to 36 V with a working power current of 700 uA. It supports an operating temperature range from -40 C to +125 C and is housed in an SMD/SMT SOIC-8 package.

Feature Summary

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

Applications

• Industrial process control systems
• Medical equipment signal conditioning
• Data acquisition channels
• Sensor interface circuits

Procurement Notes

Verify the specific datasheet version for the INA129UA to ensure all parameters match your design requirements. Confirm the package type and operating temperature range are suitable for your application environment. Check for any recent product lifecycle notices or obsolescence warnings from Texas Instruments before finalizing procurement plans.

Selection Notes

Select the INA129UA when high precision and low power are required in a single-channel instrumentation amplifier configuration. Consider its 120 dB CMRR and 50 uV offset voltage for applications demanding accurate signal amplification. Ensure the 4.5 V to 36 V supply range fits your system power constraints and that the SOIC-8 package accommodates your PCB layout space.

Part Context

The INA129UA belongs to the INA12x series of instrumentation amplifiers from Texas Instruments. This series is known for combining high precision with low power consumption, making it suitable for battery-operated and portable devices. The UA suffix indicates a specific package and temperature grade variant within the broader INA129 family.

Replacement Considerations

Official substitutes may include other parts within the INA12x series such as the INA128UA, provided pin compatibility and performance metrics align with the original design requirements. Verify functional equivalence through official Texas Instruments documentation before substitution.

FAQ

What is the maximum supply voltage for the INA129UA?

The maximum supply voltage for the INA129UA is 36 V.

What is the typical input bias current of the INA129UA?

The input bias current of the INA129UA is 5 nA.