[sdiy] Question for Yamaha tech?

[Ken Stone]

I would suggest that it is a mitsubishi chip, looking at that number. Yamaha
seems to have IG numbers for chips as common as the 4558, so that could
merely be Yamaha's internal reference.

Ken

>Hi guys,
>
>Tried this one at AH, but no smile so far. Maybe I have more luck here.
>
>Does anybody know what kind of IC this is:
>M51620P (8-dip)
>
>It also says YIG8531 which, on the one hand, looks like a date code, 
>but also has the letter markings that suggest it to be one of the 
>Yamaha IG chips.
>
>Of Google was my first try, which gave absolutely zero returns except 
>one. The most surprising part was that there wasn't even a single 
>question from anyone about it, something you will *always* encounter 
>when a chip is rare.
>
>The one entry was from sounddoctorin (yes, you Bob), but it gave no 
>info except the entry M51620P/IG00150, suggesting it was the same as 
>this Yamaha lfo.
>
>Anyone?
>
>Thanks,
>Senso
>
>PS: With all the information on the web about synthesizer parts, how 
>come there is virtually nothing about Yamaha's integrated circuits?
>I'd like to know more about the rest of the M516xx series as well...
>
>-- 
>
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_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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