[sdiy] TDA7052A as VCA

[cheater cheater]

I think the question isn't how clean it is, rather what flavor the dirt has.

D.

On Mon, Jun 28, 2010 at 22:35, Tim Parkhurst <tim.parkhurst at gmail.com> wrote:
> On Mon, Jun 28, 2010 at 12:57 PM, Ingo Debus <igg.debus at t-online.de> wrote:
>> Hello all,
>>
>> in the current Elektor issue there's a circuit "Guitar compressor without
>> CA3080". Obviously they're using a TDA7052A as VCA. This is a small power
>> amplifier IC (0.5 watts) including a log VCA. Probably not the world's
>> cleanest VCA, but very cheap. Gain control range is 75dB minimum according
>> to the data sheet. Anyone tried it?
>>
>> Ingo
>> _______________________________________________
>
> I'd be interested to see how it behaves, but it seems like a lot of
> work considering that the LM13700 Dual OTA and 2164 Quad VCA chips are
> still in production. The 13700 can be used almost anywhere are 3080
> was, and the 2164 is a quad unit with built in expo response and a
> dynamic range of almost 120dB. The 2164 is not an OTA (no differential
> inputs) but that can be worked around with a few op amps, and it is a
> very clean and quiet device. Still, kudos to someone for some original
> thinking.
>
>
> Tim (are we not OTA?) Servo
> --
> "Sire, the church of God is an anvil that has worn out many hammers."
> - H.L. Hastings
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