[sdiy] Crosspoint Switch [was: Which programable chip?]

[Ian Smith]

I'm not sure I'm seeing what you see Eric. I'm seeing the input still going through the 4051 and the output going to the opamp so the input still has to go through the 4051. Maybe I'm misunderstanding what you're saying.
-Ian

----------------------------------------
> From: ebrombaugh1 at cox.net
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Crosspoint Switch [was: Which programable chip?]
> Date: Fri, 17 Apr 2009 07:37:39 -0700
>
>
> On Apr 17, 2009, at 7:22 AM, Ian Smith wrote:
>
>>>
>>> Ummm....need to *carefully* check the voltage across the switch:
>>> video is ~
>>> 1.5V pk-pk Do NOT assume anything based on the supply voltages.
>>>
>>> Paul S.
>>
>> Bugger. In my defense I did this last night when I was half asleep.
>> Well, either way it'll be interesting to see what I can pull out of
>> the thing. Thank you for pointing that out.
>> -Ian
>
> Ken Stone's Sequential Switch design puts the analog switch/mux at the
> summing node of an op-amp so that the voltage range of the switch
> doesn't limit the overall range. Maybe you could use something like
> that?
>
> http://www.cgs.synth.net/modules/cgs28_seq_switch.html
>
> Eric
>
>
>
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