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Music Keyboard IC: YW UTC2025

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mcgyver42

New Member
I bought a real cheap toy keyboard that has one IC in it, and it's almost a step-and-a-half flat.

I thought maybe the tuning of the thing might be determined by an associated crystal (fat chance!) or maybe an associated RC circuit. I can't find info on this IC. Anyone know anything about it?



It's not too complicated, so I can probably derive the schematic.

Thanks,

-Mark
 

ChrisP

Member
There is a stereo amplifier IC from Toshiba that carries the 2025 base number -- and UTC makes a version of that IC that can be used as a "bridge" amplifier as well. The IC is the TEA2025 (UTCTEA2025), and I have uploaded the datasheet for it. Maybe this will help?? :)
 

mcgyver42

New Member
Not a simple amp

ChrisP,

Thanks for trying. This can't just be a linear amplifier, because the darn thing has a bunch of functions. It's got a variety of instrument sounds, drums, demo tunes, etc. This has got to be an on-board computer/synthesizer, I think, unless there's another real-well hidden IC or two that I missed...

Now that I give it some more thought, though, and having seen this datasheet...

I better go look under the hood again.

Thanks,

-Mark
 
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