Lm386 is a low voltage audio amplifier and frequently used in battery powered music devices like radios, guitars, toys etc. Lm386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will. Small size 8 pin dip package quiescent power is only 24mw on a 6v supply. Utc lm386 linear integrated circuit low voltage audio power amplifier description the utc lm386 is a power amplifier, designed for use in low voltage consumer applications. Lm386n 4nopb amplifier ic 1channel mono class ab 8pdip from texas instruments.
In a previous article i discussed building audio amplifiers using discrete transistors. Lm386n4nopb texas instruments integrated circuits ics. But i doesnt get to the point of what pros that lm386 compare to lm741. I know of no other dead cheap simple one for that function. Compare prices on lm386 ic shop the best value of lm386. The lm386 seems to be a appropriate chip for this application, so there is no need for a replacement. Just to cover my bases, what other 8 pin amplifiers are equivalent to the. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value up to 200. Lm741 versus lm386 electronics forum circuits, projects. The lm series originated with integrated circuits made by national semiconductor. The lm386 is a a simple low power audio amplifier that can drive small speaker. Pricing and availability on millions of electronic components from digikey electronics.
A wide variety of ic lm386 price options are available to you, there are 121 suppliers who sells ic lm386 price on, mainly located in asia. More about the ics in snap circuits music ic alarm ic. Lm386 low voltage audio power amplifier electronic circuits. K application notes gain control to make the lm386 a more versatile amplifier, two pins1and 8 are provided for gain control. Also, at the same time provide ic centric decoupling of the supply. The ic consists of an 8 pin dual inline package dip8 and can output 0. These circuit modules are important building blocks of many audio communications systems, and will be. These ics have been used for decades and are still being used in many circuits. Linear databook 1980, 76 pages, national semiconductor, includes.
The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. Next, from the lm386 data sheet available free from ti, i can see that the capacitor at pins 18 is setting your circuit up for the maximum gain of 200. My comments regarding using those ics included circuits that used all of the recommended parts. Can anyone tell me whatz the benefit of lm386 more than lm741. Lm386 can drive any speaker within the impedance range of 4. Audio amplifier circuit electrical and computer engineering. The lm386 is an integrated circuit containing a low voltage audio power amplifier. Lm386 is an low voltage, battery operated power amplifier designed for application where low voltage is main concern. The gain range is 20 to 200, gain is internally set to 20 without using external component but can be increased to 200 by using resistor and capacitor between pin 1 and 8, or just with a capacitor. Know your ic seeks to demystify common integrated circuits and allows people to understand them to a point where they can use them in their own projects. It includes the very popular smt version of the lm741 single operational amplifier and the smt version of the lm386 audio amplifier ics. You can have my lm386s when you pry them from my cold.
Low power audio amplifier using lm386 engineering projects. For q1 and q2 use tip31 and tip32 or tip41 and tip42 or any suitable matched pnpnpn pair. Due to some reason i am unable to upload the image but the link is given below. Thats a lot of gain, and high gain opens up any monolithic amplifier circuit up to all kinds of stability issues, especially if this circuit is being built up on a development breadboard. Lm386 wide input voltage low power audio amplifier with. Reproduction of ti information in ti data books or data sheets is permissible only if reproduction is without alteration and is accompanied. This episode will feature the lm386 a popular op amp chip. The ic consists of an 8 pin dual inline package dip 8 and can output 0. Can anyone recommend an easy replacement for the lm386. The above amplifier takes the classical and inexpensive lm386 audio amplifier and adds a pullpull output stage for greater power. Low voltage audio power amplifier, lm386 datasheet, lm386 circuit, lm386 data sheet. Lm386 low voltage audio power amplifier december 1994 lm386 low voltage audio power amplifier general description the lm386 is a power amplifier designed for use in low voltage consumer applications. Choose lm386 ic ranging from various reputed brands like diymore, cazenoveyi, tzt, is, igmopnrq, cfsunbird, vanxy, greatzt, megmoki and more.
Use a car radio amplifier ic that is bridged with two amplifiers. Sorry to say that im new here and im new in electronic world. Lm386 is a widely used audio amplifier ic, here we will discuss about lm386 pinout, equivalent, applications, description, technical specs and other information about this ic. Download ic database equivalent guide 100 thousand. An lm386 is a very popular and widely used audio amplifier chip that permits a user to amplify sound. While it is possible to build good audio amplifiers from discrete transistors, they are no match for the many audio amp ics available to us. Ti1, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Solved problem with audio amplifier using ne5532 lm386 ic.
There are three versions of this ic, lm386n1, lm386n3, lm386n4, capable of providing power output of 0. The following is a list of lmseries integrated circuits. Best buy multiple price choices for lm386 ic on different brands maybe bring you diverse experience. After this i came at conclusion the the ic lm386 is noisy. Lm386 linear integrated circuit 1 low voltage audio power amplifier description the contek lm386 is a power amplifier, designed for use in low voltage consumer applications. The lm386 is a power amplifier designed for use in low volt. The lm386 is a voltage audio power amplifier manufactured by national semiconductor and jrcnjm. Lm386 audio amplifier datasheet, cross reference, circuit and application notes in pdf format. The ic consists of an 8 pin dual inline package and can output 0.
Voltage gain simply means that voltage out is 200 times the voltage in. A simple but efficient audio amplifier is designed using lm386 audio amplifier ic. The lm386 is a low voltage audio amplifier ic manufactured by national semiconductor. Since you havent shown us your circuit, there is little more than can be said. It is suitable for batterypowered devices such as radios, guitar amplifiers, and hobby electronics projects. What are some equivalent integrated circuits of the lm386 audio. This design from the mid 70s has been always a popular choice for lowpowered audio applications. Lm380 is much better than lm386it has higher wattageyou can go for the tda series from st microelectronicsbut many of those tda series has been. Lm386 low voltage audio power amplifier general description features the lm386 is a power, operating from a 6 volt supply, making the lm386 ideal for battery operation. One amplifier drives one end of the speaker and the other amplifier drives the other end of the speaker. Lm386 low voltage audio power amplifier datasheet rev. In the second part of the lab you will construct a microphone circuit using a compact electret condenser microphone cartridge. The amplification is good but the only problem that i encountered is noise in the output even when no input is applied. The lm386 is a power amplifier designed for use in low voltage consumer applications.
For more information about traditional and new thermal metrics, see the semiconductor and ic package thermal metrics application report. The gain is internally set to 20 keep the external part count low, but the additional of external resistor and capacitor between pin 1 and pin 8 will increase the gain to any. It is a specialized amplifier used only in high frequency radio circuits. The prefix lm stands for linear monolithic, referring to the analog components integrated onto a single piece of. We will go over the chip functions and a bit of history.
Do a search of low power audio amplifier and see if it can drive a speaker driectly. The audio amplifier will be a selfcontained, batteryoperated component. A complete guide to design and build a hifi lm3886 amplifier. What are some equivalent integrated circuits of the lm386. Lm386 low voltage audio power amplifier general description the lm386 is a power amplifier designed for use in low voltage consumer applications. Lm386 snas545c may 2004revised may 2017 lm386 low voltage audio power amplifier 1 1 features 1 battery operation. Nsc, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. I am looking for a npn or pnp transistor substitute for the lm 386.
A complete guide to design and build a hifi lm3886. Integrated circuit audio amplifiers by mike martell n1hfx. Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and circuit applications smd cross reference and equivalent we make every effort to ensure that the material on this site is accurate, however we do not warrant or represent that the information is free from errors or omission. For the plot image the green line is measured gnd referenced after the output coupling capacitor, the blue before the.
Lm386 chip comprises of 8 pins where, pin 1 and 8 denotes the gain control of the amplifier, and you can adjust the gain by placing resistor or capacitor in between these two terminals. Is there a npn transistor substitute for a lm386 amplifier. Welcome to the next installment of know your integrated circuit. The lm386m1 and lm386mx1 are power amplifiers designed for use in low voltage consumer applications. Whatever you are doing wrong would be just as likely to happen to a replacement part. The inputs are ground referenced while the output automatically. Lm386 lm386l audio power amplifier ic tayda electronics. Many were among the first analog integrated circuits commercially produced. Lm386 cross reference electronic circuits, tv schematics. Although the software seems a bit ugly design running on dos, but it works perfectly with the database with many components and is free, makes an interesting tool to interested in electronics, want to know when information about a particular component or find a replacement the operation is quite simple and is separated by categories such as.