Favorite low power chip amps

[johnr66]

I see many here like to tinker with higher power ICs. I've built a few higher power chip amps, but I like to make a few 9 volt supply, single ended amps. I know there are many ICs out there. What is your favorite? Here are some I used with comments.

LM386. My first amp. Weak drive makes only a few hundres milliwatts of output. Can't handle 4 Ohms at 9 volts.

TDA2824 16DIP Around 2 watts per channel, soft clipping low idle current. I use this in a small system in my work area. Sounds pretty clean.

TDA7231A 8DIP mono version of the 2824. Seems to be rugged and forgiving of poor layout.

TDA2822M Stereo amp on in a 8pin DIP! Seems to be same as the TDA2824, but derated due to the lower dissipation.

TDA7268 2x2 watt stereo and TDA7267 8 pin DIP mono version. I'd like to try these. Very low part count. Can anyone comment on them?

Any other low power chip amps you like?

[vizion]

This is not a chipamp. But it's a one-watter Class A single ended amp called the Tipton.

http://www.audioxpress.com/magsdirx/...tipton2730.pdf

[DigitalJunkie]

TDA7350,TDA1715,LM4950 are a couple off the top of my head..

[johnr66]

Originally posted by vizion
This is not a chipamp. But it's a one-watter Class A single ended amp called the Tipton.

http://www.audioxpress.com/magsdirx/...tipton2730.pdf

Now that is quite the effort for 1 watt of power
I guess it is just me, but I never could tell the difference from a 79 cent chip amp to a hifi amp. Of course the power amp could play much louder, but when not clipping, the chip amp sounded fine to me. Speakers, OTOH, made a big difference to me in the sound quality.

[star882]

TPA1517. Very simple circuit.
There are also some hybrid digitals available in low power (<10w), but I don't have any experience with them. They're pretty much all SMD.

[johnr66]

The TDA1517 is a nice basic amp, but it's mute circuit needs 8.5 volts or the amp won't run even though it needs only 6 volts (mute function, Grrr!). I have some of those IC already.

What I was after was something that runs on lower voltage (9 volt). The 1517 would cut out as soon as the batteries run down a little or the high output drags down the Vs some.

I ordered some TDA7267 and 7268 chips to see how these will work.

[Elektor78]

TAA611B12 SGS My first IC amplifier... 2W 9Vcc (datasheet can be found on web archives)

Others..
TBA820M - 8 pin package wide supply Datasheet
TEA2025B - 14 pin stereo Datasheet

bye

[star882]

Originally posted by johnr66
The TDA1517 is a nice basic amp, but it's mute circuit needs 8.5 volts or the amp won't run even though it needs only 6 volts (mute function, Grrr!). I have some of those IC already.

What I was after was something that runs on lower voltage (9 volt). The 1517 would cut out as soon as the batteries run down a little or the high output drags down the Vs some.

I ordered some TDA7267 and 7268 chips to see how these will work.

There are quite a few hybrid digitals that will run from 9v, but all the ones I have found are SMD. The MAX9744 and MAX9768 will work great if you can work with SMD. Efficiency is particularly important since you're running it from a battery.

[EronSilva]

Me and my boy would like a chip that used little components around it and could provide around 5 wpc, using a wallwart 9vdc. The idea is to tuck it inside a PC, but not using the (highly dirty) internal power supply. Any suggestions?
n.b.: we are beginners in the art of etching pcb's...

[EronSilva]

OK, just to get started I downloaded this hint from Elektor78:
TBA820M - 8 pin package wide supply Datasheet
We studied the datasheet, and did not find the level of distortion using 12V to obtain 2 watts. We expect it to be as low as possible. Can any of you guys (and gals) help us out?
Aharon