[sdiy] SSI2164 datasheet updated

[Quincas Moreira]

I say keep the diode in case somebody drops in an SSM as a replacement...

On Tue, Aug 7, 2018 at 7:53 PM Tim Ressel <timr at circuitabbey.com> wrote:

> Yeah, upon further study I realize it is moot. 0 Volts = unity gain and
> higher voltages reduce the gain i.e. attenuate. The SSM2164 sez max
> voltage on the control port is -V to +V while the SSI2164 data sheet
> doesn't seem to say anything about range so I assume it is the same.
>
> So I dropped my flag in error. Sorry about that.
>
> Apparently the protection diode is not needed with the SSI2164 but maybe
> use it anyway. They is cheap.
>
> All in all a good chip. Glad it is available.
>   --tr
>
> On 8/7/2018 3:15 PM, Tom Wiltshire wrote:
> > No, it means the original datasheet was full of nonsense. That 0-5V
> input was never correct, and didn’t make sense even with the rest of the
> stuff they said.
> >
> >> On 7 Aug 2018, at 22:35, Tim Ressel <timr at circuitabbey.com> wrote:
> >>
> >> Flag on the play
> >>
> >> The SSI2164 is saying 0 to 3.3 volts on the control port for
> attenuation whereas the SSM2164 says 0 to 5 volts. Does this mean it is not
> a direct replacement for the SSM2164?
> >>
> >> --TimR
> >>
> >>
> >> On 8/7/2018 1:41 PM, Neil Johnson wrote:
> >>> Hi all,
> >>>
> >>> Anyone with more than a passing interest in the 2164 quad VCA might be
> >>> interested in the latest version of the SSI2164 datasheet just
> >>> published online by Sound Semiconductor.
> >>>
> >>> While specifically for the SSI2164 there is a lot of useful info there
> >>> that also relates to the earlier SSM2164 (and the Behringer/CoolAudio
> >>> V2164 clone).
> >>>
> >>> Highlights for me:
> >>> * Explanation and formula for working out the compensation network
> >>> (confirms my earlier hand-wavey analysis)
> >>> * A superior expo converter by Dave Rossum
> >>> * More details on the internal workings
> >>>
> >>> Direct link:
> http://www.soundsemiconductor.com/downloads/ssi2164datasheet.pdf
> >>>
> >>> Cheers
> >>> Neil
> >> --
> >> --Tim Ressel
> >> Circuit Abbey
> >> timr at circuitabbey.com
> >>
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> --
> --Tim Ressel
> Circuit Abbey
> timr at circuitabbey.com
>
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-- 
Quincas Moreira
Synth Diy Guy
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