On the typical application of AD9956 datasheet "LO and Baseband Modulation Generation"
The CML driver is connected directly to PLLOSC input, however i think it can't be done. CML driver is current output, and PLLOSC is voltage input. You should use a circuit for convert from CML to PECL or something like that. On AD9956 EVALUATION BOARD there is this circuit. However, the voltage output will be higher than maximun rating specified for PLLOSC input if I'm ok. I would like to know how can I conect CML driver output to PLLOSC input?
Thanks in advance!