help id'ing board

From: Carlos Murillo-Sanchez <cem14_at_cornell.edu>
Date: Mon Oct 25 14:09:54 1999

Hi everyone;

I found a board that could fit in my microvax II if
I decided to push it in. Let me describe it:

manufacturer: Recognition Concepts Inc., assy. # 100220,
               then in the back: 100221 fab rev A

It has:

-large DIP 64 pin IC by TRW, marked 1007JIC3 8451/AP

-LS glue logic

-7808, 7908 and 7906 regulators

-couple LH0024's, four other analog chips in a section where
 traces are sandwiched between ground planes. The only external
 connector is a subminiature rf-style gold-plated connector, close
 to this analog section, and, most important,

-two DAC0800LCN chips.


I thought it might be some kind of successive approx A/D, but, why two
DAC's then?
cascading them to get a higher resolution would require unreliable,
painful calibration...
And only one channel... or maybe the analog multiplexer occupied a
separate board...

Has anybody seen this beast before?

Carlos.

-- 
Carlos Murillo-Sanchez    email:  cem14_at_cornell.edu  
428 Phillips Hall, Electrical Engineering Department
Cornell University, Ithaca, NY 14853
Received on Mon Oct 25 1999 - 14:09:54 BST

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