INA129SHKQ

Overview

The INA129SHKQ is a high-temperature precision instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a gain bandwidth product of 1.3 MHz and a slew rate of 4 V/us. The device operates on supply voltages ranging from 4.5 V to 36 V, consuming 700 uA of quiescent current. Key electrical specifications include a common-mode rejection ratio of 120 dB, an input bias current of 5 nA, and an input offset voltage of 50 uV. It is housed in a CFP-8 package and supports operating temperatures from -55 C to +210 C.

Feature Summary

• High temperature operation up to 210 C
• Precision low power instrumentation amplifier design
• High common-mode rejection ratio for accurate signal conditioning

Applications

• Industrial process control systems requiring high temperature stability
• Medical equipment utilizing strain gauge or thermocouple inputs
• Test and measurement instruments needing precise differential amplification
• Harsh environment sensor interfaces

Procurement Notes

Verify the specific suffix HKQ indicates the ceramic flat pack package and high temperature grade. Confirm availability through official Texas Instruments channels or authorized distributors. Ensure the ordering part number matches the required package style and temperature range for your application.

Selection Notes

Select this component when high temperature performance and precision are critical. Compare input bias current and offset voltage requirements against other instrumentation amplifiers. Consider the CFP-8 package constraints for PCB layout. Verify that the 36 V maximum supply voltage meets system power requirements.

Part Context

This part belongs to the INA129 series of instrumentation amplifiers known for low power and high precision. The SHKQ suffix denotes a specific high-temperature variant in a ceramic flat pack package. It is designed for applications where standard plastic packages cannot withstand extreme thermal conditions.

Replacement Considerations

Official substitutes may include other high-temperature instrumentation amplifiers from Texas Instruments such as the INA333SHKQ for lower power needs. Verify pin compatibility and electrical specifications before substitution. Consult manufacturer documentation for approved replacement parts.