LM258N

Overview

The LM258N is a dual low-power operational amplifier manufactured by STMicroelectronics, housed in an 8-pin DIP package. It features internally frequency-compensated amplifiers designed for single-supply operation over a wide voltage range of 3 V to 30 V. The device provides a large DC voltage gain of 100 dB and a unity-gain bandwidth of 1.1 MHz. Key electrical characteristics include a typical input bias current of 20 nA, an input offset voltage of 2 mV, and a supply current of approximately 0.7 mA at +5 V. The output voltage can swing to ground, and the common-mode input voltage includes the negative rail.

Feature Summary

• Internally frequency-compensated for stability without external components
• Operates from a single power supply with input common-mode voltage including ground
• Low supply current essentially independent of supply voltage magnitude
• Output voltage swings to ground even when operated from a single supply

Applications

• Transducer amplifiers
• DC gain blocks
• Conventional op-amp circuits implemented in single power supply systems

Procurement Notes

Verify that the ordering code matches the specific temperature grade and package type required for the application. Confirm environmental compliance status such as ECOPACK specifications before procurement. Ensure the selected variant aligns with the intended operating conditions and thermal requirements.

Selection Notes

Select the LM258N when a dual operational amplifier capable of single-supply operation is needed. Consider this component for applications requiring low power consumption and ground-referenced input/output capabilities. Evaluate the DIP8 package suitability for through-hole mounting requirements.

Part Context

The LM258N belongs to the LM158, LM258, and LM358 family of low-power dual operational amplifiers produced by STMicroelectronics. This series is characterized by its ability to function effectively in single-supply environments while maintaining performance comparable to standard dual op-amps. The N suffix indicates the DIP8 plastic package configuration.

Replacement Considerations

LM158N and LM358N are part of the same family with similar pinouts and functionality but differ in specified temperature ranges.