Extreme ElectronicsMar 10
What is your favorite 4000 series CMOS chip ?
Show threadrasteri
@Extelec IIRC one of the analog switches has an unbuffered control signal, so you could use it like a VCA. 4016? 4066?
Mar 10 at 10:43amWeb
Show threadExtreme ElectronicsMar 10
@rasteri 4066 quad analogue switch iirc
Show threadPhilip BraggMar 10
@rasteri @Extelec IIRC 4016 is more amenable to using it in a linear mode but it's a while since I tried. 4066s are used with a PWM control signal in several 1980s and even early 1990s broadcast audio processors, you get a 40dB or so of control range with no meaningful distortion, just add low pass filters on the i/o to get rid of the switching noise and to prevent aliasing.
Show threadrasteriMar 10
@synx508 @Extelec Oh, neat! I used to use the combination of 4066 + 4013 D-flipflop to make click-less mute switches. The latch causes it to wait for the next zero crossing.