The LM is a dual bridge-connected audio power ampli- fier which, when connected to a 5V supply, will deliver W to a 4Ω load (Note 1) or W to a 3Ω . LM LM – Dual W Audio Amplifier Plus Stereo Headphone Function, Package: Llp, Pin Nb=24 Details, datasheet, quote on part number: LM Part Number: LM, Maunfacturer: National Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor.

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Why Do We Use Capacitors in this circuit. Im trying to use them all in my car as a complete built in system, without using a radio that can easily be stolen. I am new to electronics so I have a stupid question. So first, check if you have the noise problem when the volume is turned down: Oyvind, I manage to make my amp work but the problem i datashet facing now is the output volume is too low ,can you please help me?

LM Boomer Audio Power Amplifier Series datasheet & applicatoin notes – Datasheet Archive

Hi Zach, you can schematics in the datasheet: If you love building things with electronics or would love tocheck out Ohmify. Check out the TEA datasheet for more information on that. And one more thingi think i should add, I am using USB power supply. Maybe your old speakers lm4863s had too low Watt-rating… Anyway, great that you got it working! The result is a low voltage audio power amplifier that’s closed-loop gain without causing excessive clipping, please refer to the Audio Power Amplifier Design sectionchoosing an amplifier ‘s closed-loop gain, refer to the Audio Power Amplifier Design section.


Any clue Oyvind would be datasheer appreciated.

Each channel needs 3 pins. LM LM Dual 2. Previous 1 2 The amplifier circuit diagram shows a 2. Thanks for your quick reply, I tried your suggested solution and yes the noise is still present at lower volumes. This dot means that they should be connected.

Is the layout drsignes to be used with a double sided copper board.? Not sure what pin that is, but check the datashedt and you will find info on all pins: Yeah, it is pretty good, right?

The Simplest Amplifier Circuit Diagram

As I want to make it completely portable. Hello Oyvind, Thanks for this website. Well, I guess this article is a start. Another problem I encountered is the TEA chip seems to be a pretty old version and many electronic shops are out of stock.

Could you tell me where I can buy lm4863r since I wanna start building it in a week? It is so simple to build that I put it together on a strip board in just a few hours.

Dual 2.2W Audio Amplifier Plus Stereo Headphone Function

Hey, thanks for the great schematic, I was actually looking to make an audio amp and this one looks awesome! I want to try making a portable audio amplify for devices like cellphones, mp3 datasheeh, etc.

I have wireless bluetooth speakers that came with my phone that i want to put front in-dash, a TEAD circuit from an old treadmill and a TEA that i got from an old hi-fi. I use to make daasheet from the internet and it makes little hmmm noise when the volume is attached.


Mini jack on one side, loose wires on the other side to plug into your breadboard. For filtering or to datasheett oscillations.

Check out page 4 on the datasheet.

How much voltage rating should have uf capacitor for this circuit. How can I connect the two inputs to my laptop if I build this on a breadboard? Hi, I challenge you to figure it out from the datasheet: The question is; are they interconnected on those points.

I am not a HiFi geek, I just wanted to build a simple stereo amplifier that could drive some speakers for my desktop computer. But if you build a mono amplifier, you only need a standard pot with 3 pins. Pls help me with the schematic or circuit. This is a really cool thing! The IC is probably running out of power. I mean to ask what is current consumption of this circuit?

Thank you so much for the reply! Here you build the amplifier. No abstract text available Text: Is the circuit is able to withstand the power supply? Sample maps can be found in the internet if you are interested in building your own map although the diagrams […].

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