AD977A: is it possible to use one AD780 to be the ref voltage of 16 AD977A for +-10V range?

Document created by analog-archivist Employee on Feb 23, 2016Last modified by analog-archivist Employee on Feb 23, 2016
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Is it possible to use one AD780 to be the ref voltage of 16 AD977A for +-10V
range?

 

It will cause problems. For AD977A, there is a current from AD780 to R3IN (See
circuit in fig 16a/16b, attached).  Therefore AD977A will interfere others. You
should use AD8031/2 as the buffer in front of each AD977A. Or you can use AD977
since the connection is different.

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