LM248N

Overview

The LM248N is a quad operational amplifier manufactured by STMicroelectronics, housed in a 14-pin PDIP package. It features four independent, high-gain, internally compensated amplifiers designed to provide functional characteristics identical to the UA741. The device operates with a supply voltage range of 8 V to 36 V single supply or ±4 V to ±18 V dual supply. Key electrical parameters include a gain-bandwidth product of 1 MHz, a slew rate of 500 mV/µs, and an input offset voltage of 6 mV. Each channel delivers an output current of 25 mA with a typical operating supply current of 2.4 mA.

Feature Summary

• Four independent high-gain operational amplifiers with internal frequency compensation
• Functional compatibility with the standard UA741 operational amplifier
• Class AB output stage eliminating crossover distortion
• High isolation between amplifiers achieved through independent biasing

Applications

• Applications requiring multiple UA741-type amplifiers
• Systems demanding high packaging density
• Circuits requiring precise amplifier matching

Procurement Notes

Verify the manufacturer designation on the component marking, as STMicroelectronics produces this part while Texas Instruments also manufactures the LM248 series. Confirm the specific suffix indicates the PDIP-14 through-hole package. Ensure the device meets the required temperature range specifications for your application environment before procurement.

Selection Notes

Select the LM248N when a quad configuration is needed that mirrors UA741 performance but requires lower total supply current than four discrete units. It is suitable for designs prioritizing low input offset current and bias current compared to standard UA741 types. Consider the 1 MHz bandwidth and 500 mV/µs slew rate for general-purpose signal conditioning tasks.

Part Context

The LM248 belongs to a family of quad operational amplifiers that includes the LM124, LM224, and LM324 variants. These devices share pin compatibility and architectural similarities, offering a cost-effective solution for multi-channel analog signal processing. The LM248 specifically targets applications where the performance of the classic UA741 is required in a quad format.

Replacement Considerations

The LM248N is pin-compatible with the LM124, LM224, and LM324 series. Verify thermal and electrical specifications against these alternatives to ensure suitability for the specific circuit requirements.