The ADF5002 is capable of driving the HMC905

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Accepted Answer

Question: 
 Could you please provide clarification on the sensitivity range of the HMC905LP3E when operating in differential mode? Additionally, I would like to confirm whether the output of the ADF5002 can successfully drive the HMC905LP3E in differential mode at 900 MHz (with 900 MHz being the output frequency of the ADF5002). 
 
 Answer: 
 The sensitivity measurement for the HMC905 is specified for single-ended operation. For differential mode, it can be assumed that the sensitivity values will be approximately 3 dB lower. The ADF5002 output frequency has a minimum of 500 MHz, with a typical output power of -5 dBm in single-ended configuration. With a 4.5 GHz input, the ADF5002 can provide a 900 MHz output, delivering around -5 dBm for single-ended and approximately -2 dBm in differential mode. 
 Thus, the ADF5002 is capable of driving the HMC905 in differential mode. However, when operating in single-ended mode, the input power level is in a critical range for the HMC905, making single-ended to single-ended operation a worst-case scenario, and it may not function reliably in this configuration.

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HMC905: FAQ