LM124AJ

Overview

The LM124AJ is a military-grade, low-power quad operational amplifier manufactured by Texas Instruments. It integrates four independent high-gain amplifiers with internal frequency compensation within a single package. The device supports wide supply voltage ranges, operating from single supplies of 3V to 30V or dual supplies of ±1.5V to ±15V. Key electrical specifications include a gain-bandwidth product of 1.2 MHz, a slew rate of 500 mV/µs, and an input offset voltage of 1 mV. It features a 14-pin CDIP ceramic package and operates across an extended temperature range from -55°C to 125°C.

Feature Summary

• Military-grade reliability with extended temperature operation
• Low power consumption independent of supply voltage magnitude
• Input common-mode voltage range includes ground potential
• Single-supply or split-supply operational flexibility

Applications

• Precision transducer amplification in harsh environments
• Battery-powered instrumentation systems
• Industrial data acquisition channels
• Active filtering circuits requiring stable DC performance

Procurement Notes

Verify the specific suffix designation against the manufacturer's current datasheet to confirm exact electrical tolerances and packaging variations. Ensure the procurement source provides official traceability documentation required for military-grade components. Cross-reference the part number with the latest Texas Instruments release notes to confirm active status and any potential obsolescence notices.

Selection Notes

Select this component when designing systems that require robust performance under extreme thermal conditions while maintaining low power efficiency. The inclusion of ground-referenced input capability simplifies single-supply interface designs for sensors. Engineers should consider the 14-lead ceramic DIP package for applications demanding superior thermal stability and hermetic sealing compared to standard plastic packages.

Part Context

This device belongs to the LM124 family of quadruple operational amplifiers, which are widely recognized for their versatility in analog signal processing. The 'A' suffix typically denotes military-grade screening and enhanced reliability standards compared to commercial variants. It serves as a foundational building block for complex analog front-ends in defense and aerospace electronics where long-term stability is critical.

Replacement Considerations

Official confirmed substitute part numbers: LM124AJ/883B, LM124AJRQML.