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AD8363 With Floating TCM1 & TCM2 ?

Question asked by Kevin.G Employee on Dec 30, 2009
Latest reply on Jan 2, 2010 by enash

Hello All,

 

Using the AD8363 but am getting a logarithmic slope close to 40mV/dB instead of the specificed 52mV/dB.  Could this be caused by leaving the TCM1 and TCM2 inputs floating. Is  recommended to have these pins connected to some potential (table 4 page 18)?  I don't need temperature compensation so I assumed that I could leave these pins floating.  Are there recommended resitor values for a resistor divider to vref?

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