LM248DT

Overview

The LM248DT is a quad operational amplifier from STMicroelectronics, featuring four independent, high-gain, internally compensated amplifiers. It provides functional characteristics identical to the UA741 but with significantly lower power consumption and improved input parameters. The device offers low supply current of 0.53 mA per amplifier, low input offset voltage of 1 mV, and low input bias current of 30 nA. It operates within a supply voltage range of 5 V to 30 V and features a gain bandwidth product of 1.3 MHz. The package is SOIC-14.

Feature Summary

• Four independent operational amplifiers with internal compensation
• Low power consumption compatible with single UA741 supply current
• Class AB output stage eliminates crossover distortion
• High isolation between amplifiers minimizes thermal coupling

Applications

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

Procurement Notes

Verify the specific suffix 'DT' corresponds to the SOIC-14 surface-mount package when ordering. Confirm that the required operating temperature range aligns with the industrial specifications for the LM248 series. Ensure the design accounts for the total supply current of all four amplifiers combined. Check for pin compatibility requirements if replacing legacy LM124 or LM324 designs in existing layouts.

Selection Notes

Select this component when designing circuits that require the functionality of four standard UA741 op-amps but need reduced power dissipation. It is suitable for applications where space is limited due to its quad configuration in a single package. Consider the input offset voltage and bias current specifications if precision DC amplification is critical. Verify that the 1.3 MHz gain-bandwidth product meets the signal frequency requirements of the application.

Part Context

The LM248 belongs to the LMx48 family of quad operational amplifiers designed by STMicroelectronics. This family is engineered to replace older UA741-based designs while offering modern improvements in power efficiency and input performance. The LM248 specifically targets industrial and commercial applications where multiple amplification stages are needed without excessive power draw or board space usage.

Replacement Considerations

The LM248 is pin-compatible with the LM124, LM224, and LM324 families. Designers can often substitute these parts directly into existing PCB layouts without schematic changes, provided the power supply and thermal constraints are met.