[sdiy] CCD321 Analog Shift Register

[Happy Harry]

Sorry I was away for a couple days on business.

Catching up on my e-mail

BBD's SUCK   (BBD's Suger)

H^)  harry


>From: marmot1 at magma.ca
>To: synth-diy at dropmix.xs4all.nl
>CC: music.maker at gte.net
>Subject: Re: [sdiy] CCD321 Analog Shift Register
>Date: Wed, 22 Aug 2001 13:33:52 -0400
>
>Hi Scott and List,
>Take a look at www.fairchildimaging.com for a liitle bit of info on the
>chip - and a picture. My 1985 Fairchild CCD Imaging book shows 4
>versions of the CCD321 - the CCD321A-4 is tested for specs pertinent to
>audio, while the -1, -2, -3 versions are tested for specs pertinent to
>video delays and timebase compression/expansion. The CCD321A-4 is spec'd
>at 65 dB S/N ratio at  23 KHz BW and a clock freq of 50 KHz. Not great
>but similar to regular BBD's. The notes also say that the chip may be
>clocked below 10 KHz and above 20 MHz without damage, although the
>performance will not be as good. With a total of 910 stages, the range
>of delay times obtainable would be similar to what could be obtained
>with the Reticon SAD1024 (10 MHz max clock rate IIRC), although somewhat
>shorter delays could be obtained when run at full speed. Wonder if this
>was the mystery delay chip used in the Marshall Time Modulator? It might
>have been introduced earlier than the Reticon/Panasonic/ITT-Valvo BBD's.
>Regards, Mike
>120


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