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AD 623 Wheatstone Isolation

Question asked by waynesworld on Jun 25, 2012
Latest reply on Jun 28, 2012 by bkennedy

hi;

i'm using an AD623 in amp and a wheatstone bridge to sense moisture in textiles.  the system runs off of a single source 12vdc supply.  The system functions acceptably in a non isolated state, but I'm looking for ways to isolate the -IN +IN pins and wheatstone bridge to the maximum extent possible.  Ideally to the point where there is zero voltage potential between the power rails and the -IN/+IN pins.  my only limitation is the 12vdc supply, all other options are on the table.  If there is a better op amp or circuit configuration to use, they are open for modification as well.  Ideally the AD210 would fit the bill but i don't have the required 15V supply

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