Hex VC mixer

[Curtin, Steven D (Steven)]

It also seems that that the UB 4049s are in good supply.  A quick check of
the Digikey and Mouser catalogs indicates stock of them, in fact for surface
mount they only stock the UBs, maybe for speed?   Since the parts are
available in surface mount, you could make a hex VCA that is REALLY small!

Steve C

-----------------------------------------------------------------
Steven Curtin  
Lucent Technologies Microelectronics
ph: (732)949-4404   fax: (732)949-6711
http://curtin.emf.org
sdcurtin at lucent.com
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> ----------
> From: 	Magnus Danielson[SMTP:cfmd at swipnet.se]
> Sent: 	Monday, July 24, 2000 11:01 AM
> To: 	paul.maddox at ndirect.co.uk
> Cc: 	cfmd at swipnet.se; synth-diy at node12b53.a2000.nl
> Subject: 	Re: Hex VC mixer
> 
> From: "Paul Maddox" <paul.maddox at ndirect.co.uk>
> Subject: Re: Hex VC mixer
> Date: Mon, 24 Jul 2000 09:39:18 +0100
> 
> > Magnus,
> 
> Paul,
> 
> >   I built one and tested it.. works a treat and has no noise that I
> could
> > hear.
> 
> Oh, did you build it from the directions I gave or?
> 
> > The input signals you need to be careful of, it overdrives very easily.
> > Quick change of a resistor and it now handles 10V p-p signals :-)
> 
>  ;)
> 
> The two resistors per transistor/gate is required to be of equal
> resistance
> for optimum linearity.
> 
> > Im going to use this in my polysynth design.
> 
> Oh, these 4049UB based VCAs etc seems to catch on ;)
> 
> Cheers,
> Magnus
>