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LVPECL to HMC983LP5E

Question asked by LukasRub on Jun 13, 2016
Latest reply on Jun 14, 2016 by DonY

Hey,

I’m using the HMC983LP5E DC -7 GHz FRACTIONAL-N DIVIDER as a stand-alone part for a clock signal. The clock is a differential LVPECL – signal. I’m not sure how to interface and match (Z0=50Ohm) it to the VCOIN and VCOIP pins. The information about the RF Input given in the datasheet doesn’t make sense to me. The two 100Ohm resistors in the input stage and the information about the Input High and Low Voltage don’t match to a logic level I knew.

So, how do I interface and match this?

Thanks!

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