LM124AJRLQMLV

Overview

The LM124AJRLQMLV is a quad operational amplifier manufactured by National Semiconductor, now part of Texas Instruments. It features four independent, high-gain, internally frequency-compensated amplifiers within a single package. The device operates with a supply voltage span ranging from 3 V to 32 V and supports an operating temperature range of -55°C to 125°C (TA). Key electrical specifications include a gain bandwidth product of 1 MHz, a slew rate of 0.1 V/µs, an input bias current of 100 pA, and a maximum input offset voltage of 2 mV. It utilizes a 14-pin ceramic dual in-line package (CDIP-14) designed for through-hole mounting.

Feature Summary

• Contains four independent operational amplifiers with internal frequency compensation
• Supports wide single or split power supply operation
• Designed for military-grade reliability with specified thermal performance
• Features differential output capability

Applications

• Single-event transient analysis in analog circuits
• Low-power voltage regulator designs
• Military aerospace electronic systems requiring radiation tolerance
• Precision signal conditioning in harsh environments

Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets were acquired by Texas Instruments. Confirm the specific suffix 'QMLV' indicates qualification to QML Class K or similar military standards. Ensure the CDIP-14 ceramic package matches your PCB footprint requirements. Validate that the operating temperature range meets your environmental specifications. Request full datasheets and test reports to confirm compliance with original National Semiconductor specifications.

Selection Notes

Select this component when multiple independent amplifiers are required in a ruggedized environment. The low input bias current makes it suitable for high-impedance sensor interfaces. Consider the 1 MHz bandwidth limit for applications requiring moderate speed. The ceramic package offers superior hermeticity compared to plastic alternatives. Verify that the 0.1 V/µs slew rate is sufficient for your signal frequencies.

Part Context

This part belongs to the LM124 series of quadruple operational amplifiers. It shares functional similarities with the LM324 but is optimized for higher reliability and wider temperature ranges. The 'QMLV' suffix typically denotes qualification under Military Standards. It serves as a robust alternative to standard commercial grade op-amps in defense and space applications where long-term stability and radiation hardness are critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-referencing requires verification of equivalent military qualification status and pin compatibility.