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LM358

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Philips LM358D
LM358 pinout
LM358 die photo

The LM358 is a low-power dual operational amplifier integrated circuit, originally introduced by National Semiconductor.[1]

It uses a single power supply from +3 to +30 volts for VCC (though some variants go higher, such as 36 volts for the LM358B).

Input voltage can range from −0.3 volts to VCC. Small negative input voltages below ground (GND) are acceptable because the bipolar junction transistors at the input stage are configured such that their base-emitter junction voltage provides just enough voltage differential between the collector and base for the transistors to function.[2]

References

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  1. ^ http://www.ti.com/product/lm358
  2. ^ Elliott, Rod (2016). "Voltage Followers". sound-au.com. Figure 5. Archived from the original on 2021-08-01. Retrieved 2022-07-27.

Further reading

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The LM358 is now an industry-standard part manufactured by multiple companies, all of which publish datasheets: