I am having some trouble understanding the output power levels for the HMC394. For example, let's say that I have an input frequency of 1 GHz and a division ratio of N = 8. Would I expect to have around –23 dBm output on the fundamental feedthru…
Is there a recommended way to connect if it will normally be powered down to optimize input match?
we are using the HMC394 5-bit counter in a clock synthesizer application.
The counter is set to divide by 20. The measured Phase Noise Floor from about 100 kHz to 10 MHz is -140 dBc/Hz with a clean input signal. We need it about 15 dB better, as…
The datasheet for HMC394 on the website is suspect and has some errors as you mentioned. We are going to update it asap. For now, I recommend you to reference to HMC440 datasheet, which actually is HMC394 incorporating a digital PFD. Their specifications…
Some of the other HMC dividers have an input network similar to what you described (as an example HMC705 or HMC492), but this part went a different route for some reason. I also would tend to agree with you the /IN naming convention.
In regards to the diagram…
I've attached the requested gerber files.
Perhaps the HMC437, HMC394, or HMC705 might be suitable for your application?
On page 4-2 of the attached HMC394 data sheet, v09.0114, AD provides a plot : "OUTPUT POWER, 5 MAJOR DIVIDE RATIO STATES, T=25°C"
the output power is given in dBm from N=2 to N=32.
In my setup, I will inject a SQUARE wave of Fin=3.1805…