[sdiy] Decoupling caps?

[Marvin.Jones at nokia.com]

No one has mentioned the sockets which have an integral decoupling cap built right into the socket.  Mouser carries the Mill-Max versions.  I'm sure Amp and others do them as well.  They are a bit more expensive, but a great way to save the space of the decoupling caps on a tight layout.  

mj



> -----Original Message-----
> From: ext charlie lamm [mailto:charlie at www2.charlielamm.com]
> Sent: 10 January, 2003 09:36 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] Decoupling caps?
> 
> 
> I have read often that when setting up PCB's one
> should always use decoupling caps (.1uF or so) for
> IC power pins.
> 
> I am designing a PCB for the ASM-1 VCO.  I am limited
> in board space and want to make a single sided board so
> I can press-n-peel.
> 
> Now, I know this may be too general a question, maybe too 
> general, but,
> how important are the decoupling caps in a circuit like this?
> 
> I assume decoupling would be extremely important in OTA's,
> since they seem to react badly to poorly regulated supplies....
> but with TL082's etc?  Can I get away with not using them
> and still have the VCO sound decent (in tune/not too badly 
> distorted or
> noisy).
> 
> Maybe I can put some decoupling caps away (bigger? 10uF?) 
> from the IC's
> where there is a bit more room on the board?
> 
> Or should I just tweak the design to figure a way to fit these in?
> 
> 
>