The pin number assignments for this product are listed in several places: Figure 5, Figure 6, Table 6 and Figure 51. In this particular location, the pin number assignments are not correct. Please see the following two figures (yellow highlights) to identify the location of the incorrect information. Please scroll down for the SOLUTION.
In the short term, please refer to Figure 5, Figure 6 and Table 6 (click here to review these on page 9 of the current PDF file) for the correct pin number assignments. Longer term, the next revision of this datasheet will either remove or correct this pin number assignments.
This problem has been addressed in Rev A of the ADIS16490's datasheet, which can be found at www.analog.com/ADIS16490