LM124AJ/PB

Overview

The LM124AJ/PB is a military-grade, low-power quad operational amplifier manufactured by Texas Instruments. It features four independent high-gain amplifiers with internal frequency compensation, designed for operation across a wide voltage range of 3 V to 32 V single supply or ±1.5 V to ±16 V dual supplies. The device utilizes LinCMOS technology to achieve a typical supply current of 1.5 mA while maintaining a gain-bandwidth product of 1 MHz and a slew rate of 0.5 V/µs. Packaged in a 14-lead ceramic dual in-line (CDIP) format, it supports an extended operating temperature range from -55°C to +125°C.

Feature Summary

• Military-grade reliability with extended temperature range capability
• Low power consumption independent of supply voltage magnitude
• Input common-mode voltage range includes ground potential
• High open-loop voltage gain ensuring precise signal amplification

Applications

• Precision data acquisition systems requiring low bias currents
• Industrial sensor signal conditioning circuits
• Battery-powered instrumentation due to low quiescent current
• Medical equipment requiring stable DC amplification
• Automotive control modules operating in harsh thermal environments

Procurement Notes

Verify the specific suffix designation against the official manufacturer datasheet to confirm military grade specifications and ceramic package authenticity. Ensure that the ordering information matches the exact part number variant required for your application's environmental constraints. Cross-reference the RoHS status and compliance documentation directly with the source manufacturer before finalizing procurement decisions.

Selection Notes

Select this component when military-grade performance and extended temperature stability are critical requirements. The CDIP package offers robust mechanical integrity suitable for demanding environments. Consider the trade-off between the lower bandwidth compared to standard commercial variants and the enhanced reliability and low power characteristics provided by the LinCMOS architecture for precision applications.

Part Context

This device belongs to the LM124 family of low-power quad operational amplifiers. It shares architectural similarities with the LM224 and LM324 series but differs in its specific grading and packaging options. The AJ/PB designation indicates a specific military-grade variant within the broader LM124 product line, distinguished by its ceramic dual in-line package and extended temperature rating capabilities.

Replacement Considerations

Official confirmed substitute part numbers include LM124AJ, LM124AJ/883, LM124AJRQML, and LM124AJRQMLV. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure that any replacement maintains the required military-grade certification and ceramic packaging specifications if environmental resilience is necessary.

FAQ

What is the input common-mode voltage range for the LM124AJ/PB?

The input common-mode voltage range includes ground, allowing the amplifier to handle signals down to the negative supply rail.

How does the supply current behave relative to the supply voltage?

The supply current remains low and is largely independent of the supply voltage magnitude, contributing to consistent power efficiency across different operating voltages.

What is the maximum operating junction temperature for this device?

The maximum operating junction temperature is +125°C, supporting operation in high-temperature industrial and military environments.