{"id":11158,"date":"2024-10-07T06:31:56","date_gmt":"2024-10-07T01:01:56","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=11158"},"modified":"2024-10-07T08:27:46","modified_gmt":"2024-10-07T02:57:46","slug":"introducing-lm358-operational-amplifier-ic","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/introducing-lm358-operational-amplifier-ic\/","title":{"rendered":"Introducing LM358 operational amplifier IC"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/iTyLlG18eEg?si=n4vwnIstYtwrD8Yv\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><br \/>\nAn operational amplifier gets its name from the original use of opamps in analog computers for mathematical operations. Op amps typically have two differential inputs and a single output. Non-inverting input is called V<sub>+<\/sub>\u00a0and inverting input is designated V<sub>&#8211;<\/sub>.\u00a0LM358 is a low power dual operational amplifier integrated circuit. Power supply voltage can range from +3 to +30 Volts and input voltage can range from -0.3 Volts to supply voltage.<\/p>\n<p>A<sub>OL <\/sub>or open-loop gain of operational amplifiers or the gain in the absence of an external feedback loop from the output to the input is very high, of the order of 100,000. Because of this very high gain, even small microvolts of difference between V<sub>+<\/sub> and V<sub>&#8211;<\/sub> may drive the amplifier into clipping or saturation. \u03bcA741 was a popular early integrated op amp which was introduced prior to LM358 and I had the chance to use it during my early years in hobby electronics.<\/p>\n<p>LM358 consists of two independent high-gain op amps which can operate from a single power supply over a wide range of voltages. Power supply drain is low and independent of the magnitude of the power supply voltage.\u00a0 They have large DC voltage gain of the order of 100 dB which corresponds to 100,000 mentioned earlier. Standard 5V USB power supply is also suitable for LM358. It has an 8-pin <a href=\"https:\/\/johnsonfrancis.org\/techworld\/what-is-dip-or-dual-in-line-package\/\">DIP package<\/a> (DIP8).\u00a0As LM358 has two op amps, pinout will show two sets of inputs and outputs. Pin 4 is ground and Pin 8 the positive supply voltage. Pin 2 is the first inverting input and pin 3 the first non-inverting input. Pin 6 is the second inverting input and pin 5 the second non-inverting input. Pin 1 is the first output and pin 7 the second output.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An operational amplifier gets its name from the original use of opamps in analog computers for mathematical operations. Op amps typically have two differential inputs and a single output. Non-inverting input is called V+\u00a0and inverting input is designated V&#8211;.\u00a0LM358 is a low power dual operational amplifier integrated circuit. Power supply voltage can range from +3 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11161,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-11158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amateur-radio-ham-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Introducing LM358 operational amplifier IC - Johnson&#039;s Techworld<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/techworld\/introducing-lm358-operational-amplifier-ic\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Introducing LM358 operational amplifier IC - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"An operational amplifier gets its name from the original use of opamps in analog computers for mathematical operations. Op amps typically have two differential inputs and a single output. Non-inverting input is called V+\u00a0and inverting input is designated V&#8211;.\u00a0LM358 is a low power dual operational amplifier integrated circuit. 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