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AD5791: matching of output resistance with on-die feedback resistors

Question asked by NWerner on Mar 9, 2012
Latest reply on Mar 12, 2012 by LiamR

Hello,

 

I want to connect an inverting output buffer to the AD5791.  I wonder, whether it is possible to

use the integrated 3.4K feedback resistor for this.

 

     - Is the output resistance of the AD5791 code dependent or is it a constant 3.4K?

     - How good is initial and thermal matching between the output resistance and the feedback resistor? The datasheet mentions "Because the       

       resistors are all on one piece of silicon, they are temperature coefficient matched" - are there any numbers on this?

 

Best Regards

 

Norman

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