The LM358 from Texas Instruments (also ON Semiconductor, STMicroelectronics) is the industry-standard dual operational amplifier featuring a wide supply range of 3V to 32V (or \u00b11.5V to \u00b116V), input common-mode range that includes ground, and low supply current of 0.7mA (both amplifiers). It is one of the most widely used general-purpose op-amps, equivalent to one-half of the LM324 quad op-amp.<\/p>\n
Product Overview The LM358 from Texas Instruments (also ON Semiconductor, STMicroelectronics) is the industry-standard dual operational amplifier featuring a wide supply range of 3V to 32V (or \u00b11.5V to \u00b116V), input common-mode range that includes ground, and low supply current of 0.7mA (both amplifiers). It is one of the most widely used general-purpose op-amps, equivalent […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[138],"class_list":["post-6536","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Dual op-amp, 3-32V, ground-sensing input, 0.7MHz GBW, SOIC-8\/PDIP-8","date_code":"","package_case":"SOIC-8 \/ PDIP-8","in_stock":25000,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm358.pdf","price":"$0.25","product_introduction":"The LM358 from Texas Instruments is the industry's most widely used dual general-purpose operational amplifier, with over 40 years of continuous production since its introduction in 1976. The key innovation is the input common-mode voltage range that includes ground (the negative supply rail), which eliminates the need for external biasing components in single-supply applications. The device operates from a single 3V to 32V supply or dual \u00b11.5V to \u00b116V supplies, drawing only 0.7mA quiescent current for both amplifiers regardless of supply voltage magnitude. The LM358 is equivalent to one-half of the LM324 quad op-amp, sharing the same input and output characteristics. The B and BA versions offer improved performance including 1.2MHz GBW, 3mV\/2mV max offset voltage, 300\u00b5A\/ch supply current, and integrated EMI\/RFI filters. Available in PDIP-8, SOIC-8, TSSOP-8, VSSOP-8, and SOT-23-8 packages.","working_principle":"The LM358 uses a bipolar input stage with PNP transistors that allow the input common-mode range to extend down to and below the negative supply rail (ground in single-supply operation). This is achieved because the PNP input transistors are biased from the positive supply, and their emitters can swing to within a few hundred millivolts below ground while still maintaining collector current. The input stage feeds a differential-to-single-ended converter, followed by a high-gain voltage amplifier stage with an internal 30pF compensation capacitor that ensures stability at unity gain. The output stage is a Class-AB push-pull with current limiting and short-circuit protection. The output can swing to within approximately 1.5V of the positive rail (due to the VCE(sat) of the upper output transistor) and down to within a few millivolts of ground (through the 50\u00b5A current sink). The 0.7MHz gain-bandwidth product limits the useful closed-loop bandwidth at higher gains, but is sufficient for DC and low-frequency signal conditioning applications.","pin_description":"
| Pin<\/th> | Name<\/th> | Function<\/th><\/tr> | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1<\/td> | 1OUT<\/td> | Amplifier 1 output<\/td><\/tr> | |||||||||||||||
| 2<\/td> | 1IN-<\/td> | Amplifier 1 inverting input<\/td><\/tr> | |||||||||||||||
| 3<\/td> | 1IN+<\/td> | Amplifier 1 non-inverting input<\/td><\/tr> | |||||||||||||||
| 4<\/td> | GND \/ VEE<\/td> | Negative supply or ground (single supply)<\/td><\/tr> | |||||||||||||||
| 5<\/td> | 2IN+<\/td> | Amplifier 2 non-inverting input<\/td><\/tr> | |||||||||||||||
| 6<\/td> | 2IN-<\/td> | Amplifier 2 inverting input<\/td><\/tr> | |||||||||||||||
| 7<\/td> | 2OUT<\/td> | Amplifier 2 output<\/td><\/tr> | |||||||||||||||
| 8<\/td> | VCC<\/td> | Positive supply (3V ~ 32V)<\/td><\/tr><\/table>","application_scenarios":"The LM358 is used as a transducer amplifier where the ground-referenced input allows direct amplification of sensor signals (thermistors, photodiodes, strain gauges) without an offset reference. In current-sensing applications, the non-inverting input is connected to a shunt resistor near ground, and the amplifier measures the small voltage drop across it. For active filters in audio and instrumentation, two amplifiers implement a 2nd-order Sallen-Key or multiple-feedback filter stage. As a window comparator, one amplifier detects the upper threshold and the other the lower threshold, with their open-collector-style outputs combined to generate an out-of-range signal. In battery-powered devices, the 0.7mA supply current and 3V minimum supply voltage enable operation from a single lithium cell.","alternative_models":"
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