Hi, Marty - san,
The correct device model is HMC767,evaluating.
HMC703,704 register (REG 0x07) are slight different from HMC767.PLL VCO Evaluation Software is Version 220.127.116.11
Please advise to us about the REG 0x07 setting for HMC767…
我用HMC767 参考用50M 鉴相用50M时可以锁定，但是当参考改为100M，再分频出50M用来鉴相时反而不能锁定了
Now,I want to use HMC767 and HMC778 to generate a X-band signal, A 50MHz TCXO is intended as a reference crystal. the ESPON's TG-5500CA is a clipped sinewave output, if it's suitable to choice for HMC767 and HMC778? or is there any other good choice…
The HMC703 PLL is the same PLL used in the HMC767 microwave synthesizer. You can use the guidelines from Table 3 in the HMC767 User Guide. The XREFP voltage should not exceed RVDD+ 0.3V.
Unfortunately the HMC767 source code isn't available.
You can extract the register settings from the HMC767 evaluation board control software if that's what you are looking for.
You didn't mention your application or the loop BW you're using so the following is assuming that REF / PFD, Icp etc. must remain as they are.
1) I don't recommend attempting to use the HMC767 for an 8.0 GHz application. Over process & temperature…
Hi dyoung1, I did try but HMC767 hasn't work yet. Could you help me more? Please send me about the values of other registers into HMC767 worked at 1-Way Sweeps Mode. I look forward to hearing from you soon. thanks
I have been using the HMC767 evaluation board for a few weeks controlling it from our own DSP. Then we noticed that the frequency was not what we expected and we decided to troubleshoot it using the Hittite evaluation software. We realized that the evaluation…
I am starting the design of a frequency synthesizer with the HMC 778 PLL. As a reference, I am using one design already done with the HMC 767.
I try to understand the loop filter already done in that design. Unfortunately, the results does…