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Question about output pin for AD8015

Question asked by RandyJ on Jan 17, 2014
Latest reply on Jan 21, 2014 by Emman.A

Could someone tell me why there is voltage on output + pin  when there is no signal into the TIAmp.  I am new to this circuitry stuff but I would assume that if there is no input hooked up to the TIAmp that the output + should have a low voltage (close to zero). Output + needs to match up with the A/D converter range of 0-3.3V computing to a range of 0-1023 numerically. The output + pin currently has a voltage of 2.994V which means I have a input signal range of ~0.4V which will not work for our fluorescence sensor that I am developing. Are there ways around this or do I need to buy a different TIAmp?