Is it possible to use the same clock and data lines for several ADF4350 and ADF4360's on a given board. I not sure how to advise on the operation of the LE pin and whether this disables the clock and data lines for individual devices.
Yes, it is possible to do this. You can share the CLK and DATA lines (typically implemented on a standard SPI bus).
To control each part individually you just need separate LE lines to each device (typically using GPIO). any data that
is clocked into the serial shift register of the ADF4xxx devices gets ignored unless followed by a high going LE pulse.
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