[sdiy] Help, I'm Desperate! (Charge Injection with DG408)

David G Dixon dixon at mail.ubc.ca
Sun Dec 16 01:45:30 CET 2018


Thanks for the hot tip!  I'm going to try this to see if I can't save my
current build. 

> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On 
> Behalf Of Oakley Sound
> Sent: Saturday, December 15, 2018 3:11 AM
> To: Synth DIY
> Subject: Re: [sdiy] Help, I'm Desperate! (Charge Injection with DG408)
> 
> I have always found that in practice the 4016 and 4051 
> produce less charge injection that the DG4XX series. It's a 
> bit of pain to deal with the differing voltage levels of the 
> logic control and the signal compared to the DG4XX though.
> 
> I have also had some joy in routing, via a small capacitor, 
> the logic control line into the output signal. If it's the 
> right way up it can cancel any charge injection pulse created 
> inside the switch.
> 
> Tony
> 
> www.oakleysound.com
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