CDS ICs from Datel

ALAIN MAURY maury at ocar01.obs-azur.fr
Wed Jul 24 03:17:55 CLT 1996


Hello world,

We are currently operating a 5 microseconds 16 bits acquisition
chain for our 2K CCD. The next generation CCD will be larger and
will require a faster acquisition system. We are aiming at 
something in the 14 bits 1 MHz range/4 parallel channels.

We have found no satisfying analog switches, except the DG612,
which we are welcome to buy here in France, but only in very large
quantities. If one of you had some of them available for resale, I
would be glad to exchange a couple of them against a n dollar bill
sent in an envelope so as to test them in real life.

The other solution is to use double conversion systems with faster
converters or two converters and a Lattice style chip to perform a
digital substraction so as to send both conversion in a single optical 
fiber to the control room.

We have also seen some Datel CDS chips ( CDS 1401 and CDS 1402 ),
which seem to be interesting for our purpose. My question is:
Has anybody on this list of bright people used those chips, have
any warnings, comments, infos on them ?

Alain



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