Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Amplifier Discussion => Topic started by: smadin on January 22, 2022, 09:42:11 AM

Title: Panasonic AN17827A chipamp?
Post by: smadin on January 22, 2022, 09:42:11 AM
Has anyone worked with this IC? Digikey lists it as obsolete, but has ~500 in stock, quite cheap—$0.91, $0.75 in quantities of 10+. My (not-very-educated) guess is that it isn't very good, but the datasheet says it can put 2.5W into 8Ω, with an 8VDC supply, so I wondered if for the price it might be fun to experiment with.
Title: Re: Panasonic AN17827A chipamp?
Post by: Jazz P Bass on January 23, 2022, 12:55:15 AM
I have never run in to that specific ic before.
But, if you are in to 'experimenting' I say go for it!
Title: Re: Panasonic AN17827A chipamp?
Post by: Loudthud on January 23, 2022, 02:43:47 AM
I think the big limitation will be that the package will limit the power dissipation. Apparently the chip comes in a 16 pin dip and there are no options.
Title: Re: Panasonic AN17827A chipamp?
Post by: joecool85 on January 24, 2022, 07:58:58 AM
Quote from: Loudthud on January 23, 2022, 02:43:47 AM
I think the big limitation will be that the package will limit the power dissipation. Apparently the chip comes in a 16 pin dip and there are no options.

It is only rated at 2.5w output though, and with 0.728w power dissipation that should be completely fine.  Due to lack of information (no graphs for efficiency, power output vs supply voltage, etc) it is hard to nail down, but it looks interesting.  I've mostly moved to class d circuits for low power applications though.
Title: Re: Panasonic AN17827A chipamp?
Post by: smadin on January 25, 2022, 07:43:35 PM
Well, I ordered a few of them, and if I end up with anything decent (or at least interesting) sounding, I'll post schems and clips.