[sdiy] CCD321 Analog Shift Register

[Scott Gravenhorst]

harrybissell at prodigy.net wrote:
>Sorry I was away for a couple days on business.
>
>Catching up on my e-mail
>
>BBD's SUCK   (BBD's Suger)

That may be true, but what if you WANT a cheesey sound?

Then, you would want to find designs that suck and parts
that suck.  So for some applications, a BBD might be
*PERFECT*.

>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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