AD5934 vs AD5933


I am designing some equipment for eddy current testing.  The AD5934 and AD5933 seem to be a good choice to simply the impedance measurement section of the design.  However I find the data sheets are unclear.  As far as I can tell the two chips are basically the same except for the A/D sampling rate (also the temp measurement and internal clock on the AD5933) However both data sheets say the conversion time is about 1 mS with a 16 MHz clock.  See page 22 under "NUMBER OF SETTLING TIME CYCLES " in the AD5934 data sheet.  Is this an error?  Should the conversion take about 4 mS with the AD5934?