TI, TPA6110A2, audio amplifier for PCM 1742

arghh, 1M on a LM358 thats enough to sink the Titanic,despite the film, even the Amazing Jim Thompson

google super buffer maybe, W.Jung, a somewhat super dude in audio

zzztime in europe, bye

martin

a high-voltage version, page 256, item W.

I will leave that to you Win.....:) but going back to Boki's well defined problem, hifi isnt a requirement, and surely massive xover distrtion reduces the SPL? (fat chance)

martin

Hi All, I got a lot of noise after I connect to LM138 for my audio amplifier, does that because my min speaker power is too small ?

Best regards, Boki.

After I connect a C to power supply, the noise dissaper ~

I have two speakers, but only 1W,

Right now, I have to add one more capacitor about 330uF to filter out the poewr noise.

could you please advice?

thank you very much.

Best regards, Boki

Joerg, you missed the smiley. :-)

Boki, isn't the venerable LM386 a better choice, since you have only 1 speaker. It will give 4 times the power and works well on unregulated voltage. With 4mA quiescent current it might be a bit high today though.

Got sidetracked (again)

martin

You probably had instability without some local decoupling.

Do you fully understand power supply decoupling ?

You'll need to be careful with a power amplifer about circulating currents in the ground traces to that can cause instability.

It's quite important that 'power ground' is returned separately to your psu from signal ground.

Graham

I assume he has 2 speakers since it's a stereo application.

Graham

Why.. ..could please advice what's the advantage?

BR/ Boki.

After some electronic lecture study/review, I think I found the root cause :D

I think that is becasue decouping, am I right?

Best regards, Boki.

I read in sci.electronics.design that Boki wrote (in ) about 'TI, TPA6110A2, audio amplifier for PCM 1742', on Mon, 3 Oct 2005:

Something that is better than something that isn't an advantage.

So, are apples better than oranges? ;-P

Cheers! Rich

If you want cider, yes.