Archive of the former Yahoo!Groups mailing list: Korg Poly800/EX800 Users

Crap! Sorry to get your ticker racing. All I have is the same
NJM2069.gif that's in the files section. I forgot we never found it.

--- In korgpolyex@yahoogro ups.com, Michael Hawkins
<korgpolyex800@ ...> wrote:

>
> Hey Fran,
>
> That's not the first time I've heard someone claim to have the

datasheet for the NJM2069. Each time in the past, I have been
bitterly disappointed when the claim has turned out to be only that -
just a claim. I still have no datasheet for the NJM2069.

>
> But every time I hear that claim I get heart palpitations because

I've wanted that datasheet for years.

>
> For two reasons, first, sometimes people need a replacement chip,

like Ty might for example. And I've wanted to create a little PCB
drop in equivalent filter. Second, I've always wanted to add a second
filter and send DCO1 into filter 1 and DCO2 into filter 2.

>
> Now, can you go find that datasheet - like - NOW - please. :-0
>
> Mike.
>
>
>
>
> ____________ _________ _________ __
> From: narfman96 <narfman96@. ..>
> To: korgpolyex@yahoogro ups.com
> Sent: Tuesday, November 25, 2008 7:35:39 AM
> Subject: [korgpolyex] Re: Poly 800 problems, IC
>
>
> Here is some info for the NJM2069:
> KORG NJM2069
> Pin# Function
> 1 Audio In GND (GND)
> 2 Mixer Signal 1 Level CV In
> 3 Mixer Signal 2 Level CV In
> 4 VCF Resonance CV In
> 5 VCF 12dB/oct Audio Out
> 6 VCF 24dB/oct Audio Out
> 7 VCA Signal In
> 8 VCA Level CV Log In
> 9 VCA Level CV Lin In
> 10 VCA Signal Out
> 11 Vss (GND)
> 12 -Vee (-5v)
> 13 VCF Cutoff CV Lin In
> 14 VCF Cutoff CV Log In
> 15 VCF cap C4
> 16 VCF cap C3
> 17 VCF cap C2
> 18 VCF cap C1
> 19 VCF Ext Audio In
> 20 Mixer Signal 2 In
> 21 Mixer Signal 1 In
> 22 +Vcc (+5v)
> Which pin is busted? 2,3 or 20,21 Not sure if this can disable DCO1
> but it sure looks like it could???
> I've had good luck soldering to busted pins even if they were flush
> with the side of the chip. Just remember the heat will now be much
> closer to the inner workings. I also have the pdf datasheet for the
> NJM2069 around here somewhere.
> Good Luck, Fran
>