INA129SJD

Overview

The INA129SJD is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a 1.3 MHz bandwidth and a 4 V/us slew rate. Key electrical specifications include a common-mode rejection ratio of 113 dB, an input bias current of 50 nA, and an input offset voltage of 25 uV. The device operates on supply voltages ranging from 4.5 V to 36 V with a typical operating current of 2 mA. It is housed in a CDIP-8 package designed for through-hole mounting and supports a gain range from 1 V/V to 10000 V/V.

Feature Summary

• High common-mode rejection ratio for accurate signal conditioning
• Low power consumption suitable for battery-operated systems
• Wide supply voltage range supporting diverse application environments

Applications

• Industrial process control sensor interfaces
• Medical equipment signal amplification
• Data acquisition systems requiring high precision
• Strain gauge and thermocouple conditioning

Procurement Notes

Verify the specific suffix J for military temperature range and D for ceramic DIP package against official datasheets. Confirm end-of-life status as indicated by manufacturer notices before finalizing procurement plans. Ensure compatibility with existing through-hole assembly processes.

Selection Notes

Select this component when high precision and low power are critical requirements. Compare input bias current and offset voltage against system noise floors. Verify that the CDIP-8 package fits the mechanical constraints of the printed circuit board design.

Part Context

This part belongs to the INA129 series of instrumentation amplifiers known for their versatility and ease of use. It serves as a robust solution for applications demanding high accuracy and stability. The series is widely recognized in industrial and medical fields for reliable performance under varying conditions.

Replacement Considerations

Official substitutes within the same family include the INA129UA for surface mount applications. Verify pinout compatibility and thermal characteristics when transitioning between package types. Consult the manufacturer's replacement guide for validated alternatives.