• HMC4069

    Can I use a LVPECL source to drive the RF and/or the Ref input on a HMC4069.

  • RE: HMC4069一定要用推荐的有源环路吗?

    您好,感谢对ADI产品的关注。

    HMC4069的环路是要求使用有源滤波的。您可以使用ADIsimPLL针对您的VCO进行环路仿真。

    https://www.analog.com/en/design-center/adisimpll.html

  • HMC4069 Evaluation board switch control

    I bought a HMC4069 evaluation board last month. It has 5 bit control pins which decide the frequency division ratio. 

    With A0-A4 1/0/0/0/0, it has to work with 1/2 ratio but failed. It doesn't work with 0/1/0/0/0, either. It works with A0-A4 1/1/1/0/0…

  • HMC4069 How to use it with external VCO

    Hi! I want to use an external VCO as the input of HMC4069(VCO), but i don't know how to design the circuit for the Vtune of the external VCO. How to get the Vutune needed loaded on the external VCO. Can anyone give some suggestions on this?Thanks a l…

  • Hittite HMC3716 and HMC4069 availability and datasheet request

    Dear Sir

    Please can you confirm the availability of the Hittite HMC3716 and HMC4069 and can I have an up todate datasheet for both?

    Thanks

    John

  • RE: adisimpll仿真hmc4069中有源环路值和手册不一样

    您好,感谢对ADI产品的关注。

    仿真还和VCO的输入电容等相关。手册没有给出VCO的型号。如果我们是仿真分析,将VCO的相关参数都输入后,使用仿真给出的R,C值即可。

  • HMC4069的环路滤波器相位裕度为什么是70度?

    大家好:

    最近打算用HMC4069 PLL,但看手册发现推荐的电路中环路的相位裕度为70度,根据自己了解为了保证系统稳定,相位裕度一般在45度左右,为什么推荐电路中设置到了70度,会对系统有影响吗?看仿真的相噪曲线确实是会好一点。

    若自己再仿真其他带宽的环路滤波器,都需要将相位裕度设置到70度么?

  • A question about hmc4069 (PLL) loop filter design, can active op circuits convert +/-5V pulse signal to 15V (likewise) tuning voltage?

    hmc4069 PD output : +/-5V (pin NU, ND), charge pump current is 10mA;

    suppose vco tuning voltage is 0~15V.

    As you see, they are not equal , and the latter(15V) is higher than former(5V)

    As the datasheet recommemded , the loop filer is one op circuits …

  • Driving an AC coupled load with ADCMP580

    I would like to drive an ac-coupled differential 50 Ohm load with the ADCMP580 (or 582). The load is in fact the REF/NREF input of the HMC4069 (with DC block).

    What is the best way to terminate the ADCMP580 outputs and to connect the REF/NREF input of…