multipliers (was Re: 3280 and AD533 availability, EN frequemcy shifter)

[Donald Johnson]

Martin Czech wrote:
> How good are the available multipliers? Noise, inter modulation,
> linearity, drift, carrier feed through?
> 
> There is:
> 
> RC4200 (exp/log, expensive, and one quadrant, can be extended to 4)
> MC1495 (linear inputs, why isn't this available in Europe??)
> MC1496 (nonlinear input for modulator, ie. expects square modulator)
> AD633  (crap, if you ask me)
> diode ring (original ring modulator, with or without iron)
> diy    (using dual transistors)
> 
> and then there are very expensive AD chips.

 There is also the MC1494. From the datasheet it seems to be an
 improved MC1495. TApparently the Bode/Moog Frequency Shifter used
 these. I got a number of them quite cheap from Future/Active.
 Does anyone have any comments or experience with these?

 thanks,
 don.


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