[sdiy] NJM-2069 internals. Was: Re: SSM2040

[bayne d'artagnan]

It occurred to me today that it's unlikely that the NJM2069 is an
SSM2044 clone. The 2044 is a ladder filter with the transistors  of
the ladder replaced by the gain cells. As such, the caps span the
ladder and do not tie to ground. The NJM-2069 ties all of the filter
caps to ground so it's likely to be similar to almost every other chip
filter. The question is then, what's the nature of the gain cells?

Thoughts? Corrections?

On Nov 5, 2007 4:39 PM, Nicholas Gregorich <nicksdsu at mac.com> wrote:
> anthony wrote:
> > What was the NJM2069 again? I remember seeing an NJM2069 called for in
> > something I needed, but I forget what...
> >
>
> Korg DSS-1 and friends' filter.
>
> Nick.
>
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