Small VCA (was Re: [sdiy] Basic 4th order LP butterworth filter papers)

[Paul Maddox]

Tom,

 if they still made the 3080, I would :-)

Paul

On 5 February 2010 11:01, Tom Wiltshire <tom at electricdruid.net> wrote:
> You could try the CA3080 VCA instead, Paul. Mind you, you've probably
> considered that.
>
> At only 8-pins it's quite a bit smaller than the LM13700, and it might
> perform better than the transistor VCA. But not by much!
>
> T.
>
> (No faith in the 3080)
>
> On 5 Feb 2010, at 07:57, Paul Maddox wrote:
>
>> Aaron
>>
>> :-)
>>
>> I am, I'm just curious, sure it may not be the most exciting thing in
>> the world, but it's VERY small, and right now I'm after a very very
>> small foot print filter for a project.
>>
>> I've been following the simple VCA thread, and an LM13700 is too big
>> for me, so I'm going to be playing with the single/dual transistor
>> VCAs.
>>
>> Paul
>>
>> On 5 February 2010 07:09, Aaron Lanterman <lanterma at ece.gatech.edu> wrote:
>>>
>>> On Feb 5, 2010, at 1:50 AM, Aaron Lanterman wrote:
>>>
>>>> On Feb 5, 2010, at 1:45 AM, Paul Maddox wrote:
>>>>
>>>>>> Like this, or something else?
>>>>>> http://focus.ti.com/lit/ds/symlink/tlc14.pdf
>>>>>
>>>>> How do these sound in a synth?
>>>>> has anyone ever tried them?
>>>
>>> Whoops, ignore my last note on slopes and ripple, I just realized Paul
>>> was probably asking about this particular switched capacitor chip, and
>>> probably not asking about Butterworths in general. ;)
>>>
>>> - Aaron
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>
>