LM124DT

Overview

The LM124DT is a quad low-power operational amplifier manufactured by STMicroelectronics, housed in a 14-pin SOIC surface-mount package. It features four independent high-gain amplifiers with internal frequency compensation. Key electrical parameters include a gain-bandwidth product of 1.3 MHz and a slew rate of 400 mV/us. The input offset voltage is specified at 5 mV, with an input bias current of 100 nA. It operates on supply voltages ranging from 1.5 V to 30 V (single) or ±1.5 V to ±15 V (dual), drawing 1.5 mA of operating current. Each channel provides an output current of 40 mA, and the device supports a common-mode rejection ratio of 80 dB.

Feature Summary

• Quad configuration with four independent high-gain operational amplifiers
• Internal frequency compensation for stability
• Wide single and dual power supply voltage operation range
• Low power consumption independent of supply voltage magnitude

Applications

• General-purpose signal conditioning circuits
• Sensor interface applications
• Transducer signal amplification
• DC gain blocks

Procurement Notes

Verify the specific suffix 'DT' corresponds to the SOIC-14 package and industrial temperature range (-55°C to +125°C) as listed in distributor specifications. Confirm RoHS compliance status through official documentation. Ensure the ordering code matches the exact manufacturer part number to avoid confusion with commercial variants like LM324DT which may have different electrical limits.

Selection Notes

Select this component when a quad amplifier with low power dissipation is required for single-supply systems. It is suitable for applications needing wide common-mode voltage ranges that include ground. Compare against LM324DT if higher output current or stricter commercial temperature limits are acceptable, noting the LM124DT offers extended temperature capability.

Part Context

This device belongs to the LM124/LM224/LM324 family of quad operational amplifiers. While electrically similar to the LM324, the LM124 variant is distinguished by its extended industrial temperature range and specific performance characteristics defined by STMicroelectronics. It serves as a general-purpose solution for analog signal processing tasks.

Replacement Considerations

LM324DT: Verify if the commercial temperature range (0°C to 70°C) meets system requirements, as it differs from the LM124's industrial range. LM224DT: Check if the intermediate temperature range (-40°C to 105°C) is sufficient. Cross-reference pinouts and package dimensions to ensure mechanical compatibility.