[sdiy] Decoupling caps?

[patchell]

    These are good if you power supply pins are in the corners, but, if you have a TL084 that you want to bypass, you will more than likely be SOL with those sockets.  Also, in the case of the 8 pin opamps, generally you want to bypass the two power supply pins to ground, and ground may not
nessesarily go to any of the pins on the opamp...

Marvin.Jones at nokia.com wrote:

> 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?
> >
> >
> >

--
 -Jim
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