[sdiy] CCD321 Analog Shift Register

[Sean Ellis]

Search the SDIY archives for CCD and 'Dan' (Danial Stocks). He got a CCD to
work as a BBD last year I think but has since left the list.
Regards,
Sean

----- Original Message -----
From: <marmot1 at magma.ca>
To: "Atom 'Smasher'" <atom at suspicious.org>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, August 23, 2001 5:31 AM
Subject: Re: [sdiy] CCD321 Analog Shift Register


> Hi,
> You use this formula for BBD delay time:
>
> delay (seconds) = (no. of stages)/(2 * clock rate)
>
> So for 910 stages and 10 KHz clock, delay = about 45 milliseconds
> For 910 stages and 20 MHz clock, delay = about 23 microseconds.
> Bandwidth must be limited to less than (clock freq)/2 or else aliasing
> occurs. Practically, the BW is usually set at about (clock freq)/3.
>
> So for 10 KHz clock, BW must be limited to less than 5 KHz.
>
> BTW this is not a new chip - it's an old chip still in production....
> Technically it's a CCD and not a BBD although similar things can be
> done.
> Regards, Mike
>
>
>
> Atom 'Smasher' wrote:
> >
> > > http://www.fairchildimaging.com/main/linear_321.htm
> > ====================================
> >
> > S/N = 65db
> >
> > is that any better than the old ones?
> >
> > i'm still not sure how much time @ what cutoff freq could be had with
910
> > stages.
> >
> >         ...atom
> >
> > ----------------Void-If-Detached----------------
> > http://smasher.suspicious.org/fs1r  Yamaha FS1R
> >
> >         "If you tell a lie big enough and keep repeating it
> >          people will eventually come to believe it."
> >                 -- Joseph Goebbels (Nazi Minister of Propaganda)