We are thinking in migrating a current design from HMC767 to avoid excesively low tning voltages to get 8GHz output frequency. Our idea is to use HMC765 instead but phase noise floor degradation seems to be expected. My questions are:
Could you tell me what sequence do i program the registers of HMC765 and HMC820 (for example: with ADF4159: write reg R7,R6,R6,R5,R5,R4,R4,R3,R2,R1,R0)? Or Can i set registers with any sequence?
And could you share with us "recommended…
Does this has built-in Flash Memory for registers, so that at power on it will wake up at the last programmed frequency.
I wanted to use it as Fixed Frequency Oscillator, where Serial port programming is not feasible.
4'd0:ctrl_word <= 32'b0_000000_0000_0000_0000_0000_0000_0001_0;//00h
4'd1:ctrl_word <= 32'b0_000001_0000_0000_0000_0000_1000_0110_0;…
Not sure who Richard is...my name is Marty
I've attached the gerber files for the HMC765 evaluation board.For future reference, these files can sometimes be found be searching EZ or by visiting the Full Product Page for the model in question…
We are using a 100 MHz reference and locking at a fixed frequency of 8 GHz with the HMC765. You suggest: We recommend setting the lock window mid-way between the minimum (set by offset current) and the maximum (set by the reference period).
We are in…
I would like to program the SPI (LE, Data and CLK) for the HMC765LPCE by using FPGA. I would like to achieve the output frequency of the PLL at 7912.5 MHz, is it correct to let R=1, Nint=158, and the Nfrac=2^22? How does HMC765 identify if I would like…
The HMC767, HMC769 and HMC778 share the same evaluation board. These can be found on the 'Discussion' section on the Full Product page for the HMC778 on the website (links back to EZ). I've attached…
I've attached the HMC820 and HMC765 gerber files.