Page 21 of the ADF4112 explains what the DLY and SYNC bits do. When DLY = 1, the prescaler output is resynchronized with a delayed version of the RF input. This can reduce total phase noise by reducing the phase noise caused by the prescaler.
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Page 21 of the ADF4112 explains what the DLY and SYNC bits do. When DLY = 1, the prescaler output is resynchronized with a delayed version of the RF input. This can reduce total phase noise by reducing the phase noise caused by the prescaler.