Audio amp help

[bentomo]

I've been looking at this audio amp since the longhornengineer posted it and I have a couple questions. I don't know much about audio amps since I haven't had to work with one since it was prebuilt into the psone screen.

the chip itself

1. Where can I get speakers for it?
2. Where can I get a headphone jack for it? (I have an extra psone one but I might need a new one in the future)
3. Does the chip need a heatsink?

I can't really find the right parts on mouser.

If I can end up building it I'll put up a nice guide for it on here.

 

[zeturi]

I posted a tutorial on how to make an audio amp. It costs under $10.00 to make. It's in Random Electronic Questions.

 

[bentomo]

I've seen it, but it's mono and the lm 386 is not known for being the best quality past the nes.

 

[zeturi]

Sorry, I would help more, but I cannot open PDF files at the moment.

 

[bentomo]

2 W Into 4-W Speakers With External Heatsink The TPA6021A4 is a stereo audio power amplifier
· DC Volume Control With 2-dB that drives 2 W/channel of continuous RMS power
Steps from -40 dB to 20 dB into a 4-W load when utilizing a heat sink. Advanced
– Fade Mode dc volume control minimizes external components and allows BTL (speaker) volume control and SE
– -85-dB Mute Mode (headphone) volume control.
· Differential Inputs The 20-pin DIP package allows for the use of a
· 1-μA Shutdown Current (Typical) heatsink which provides higher output power.
· Headphone Mode To ensure a smooth transition between active and
shutdown modes, a fade mode ramps the volume up
and down.

--------------------------------------------------------------------------------------------------------------------------
/\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\ /\

This is basic information.

And the headphone jack just needs to have a switch on it.

 

[XCVG]

It's a cool amp methinks. Have some but haven't tried one yet. I've found out this much info:

-it takes a normal 5V supply
-rig a pot to 5V/GND for volume control... I think
-it has SE and BTL modes
-one is push-pull (meaning you connect the speaker between the out+ and out-) and the other mode goes between out+ and ground
-the push-pull mode is for speakers, the other for headphones
-it's a dual, stereo amp
-you might need a heatsink, but not a big one
-Ben used one, on his PS3 Slim portable I think
-you can get up to five at once from TI, as free samples

 

[bentomo]

Well I figured out all that but that still doesn't answer my 3 original questions. (kind of answers the heatsink one.

 

[bentomo]

-you can get up to five at once from TI, as free samples

Thanks for reminding me of TI, I just got 5 free samples.

 

[zeturi]

Headphone jacks are at radioshack. They have two different kinds. If you want small heat sinks for the amp, try using copper ram sinks. They're common on ebay. Speakers I have no idea, I just tear apart junked cheapie ipod speakers and use those.

 

[XCVG]

Speakers aren't amp-specific. You get those from all sorts of things. If you are doing stereo try to get two that match.