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The LM358 is a low-power dual operational amplifier integrated circuit, originally introduced by National Semiconductor.[1]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/Nedap_ESD1_-_Keyboard_controller_PCB_-_Philips_LM358D-8584.jpg/220px-Nedap_ESD1_-_Keyboard_controller_PCB_-_Philips_LM358D-8584.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Lm358.gif/220px-Lm358.gif)
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
edit- ^ http://www.ti.com/product/lm358
- ^ Elliott, Rod (2016). "Voltage Followers". sound-au.com. Figure 5. Archived from the original on 2021-08-01. Retrieved 2022-07-27.
Further reading
editThe LM358 is now an industry-standard part manufactured by multiple companies, all of which publish datasheets:
- Diodes Incorporated: datasheet, webpage
- Fairchild Semiconductor: datasheet, webpage
- ON Semiconductor: datasheet, webpage
- ST Microelectronics: datasheet, webpage
- Texas Instruments: datasheet, webpage
- National Semiconductor: datasheet, supporting materials for MIT course 6.115.