ADC1175-50: TSSOP 14pin DVDD > AVDD ?

Muk:

Let's focus just on the Datasheet.  I see that the TSSOP package drawing shows DVDD on pins 11, 13 and AVDD on 14, 15, 18.  The WQFN has DVDD on pins 9, 11, 12 and AVDD on 13,16.

In the Pin Description tables DVDD is shown on pins 11,13,14 (9,11,12 for WQFN) and AVDD on 15, 18 (13,16 for WQFN).  Indeed pin 14 is defined somewhere improperly.  Based on the structure of the WQFN I think pin 14 is improperly marked as AVDD on the package drawing.  I think that it should be DVDD.  I believe the schematic propagated the error based on the datasheet package drawing. Now since AVDD and DVDD are tied to the same voltage, there is no true electrical problem with the configuration.

--RJH