• HMC820锁相环使用一段时间后失锁

             HMC820锁相环工作大于3个月时间后有些芯片失锁有30%（大概有100块），通过重新更换锁相环芯片的方式，主板正常工作，现在想读取锁相环里面的程序，请问有什么办法吗？现在找不到失锁的原因。

  • HMC820如何配置VCO子系统寄存器才能只输出二倍频？

    想要得到4.8GHz信号，但按照手册上所说，VCO Reg02设置为8395 ，VCO Reg03设置为D11D，始终输出2.4G左右信号，4.8G附近有输出但是功率特别低。请问应该怎么配置寄存器才能只输出2倍频？

  • RE: Register programming sequence of the HMC765

    Thank you very much dyoung1,

    Please attached example configuration files for HMC765 and HMC820 (f0/2 mode board). File which you attached is only  HMC820 (f0 mode).

    DanVN

  • RE: Gerber for Evaluation PCB of HMC820LP6CE and HMC765LP6CE

    I've attached the HMC820 and HMC765 gerber files.

    • attachments.zip

  • RE: PLL VCO Evaluation Software

        I have used HMC833 HMC830 HMC840 HMC829 HMC820。

    I need to improve my  PLLVCO products phase noise。

  • TAGS LIST: Clock and Timing

    LTC6953
    LTC6955
    LTC6957-1
    HMC6832
    HMC7043
    LTC6950
    LTC6954
    HMC987
    AD9576
    AD9508
    HMC1035
    HMC988
    HMC1033
    HMC1034
    HMC1032
    HMC1031
    ADN4670
    ADCLK944
    ADCLK950
    ADCLK948
    ADCLK846
    ADCLK954
    ADCLK946
    ADCLK854
    AD…

  • RE: Frequency Sweep using HMC834LP6GE

    Thanks a lot. So, at a high level, this does work: I first load HMC834 into the evaluation software and get it to lock by loading its register file. Then, I close the evaluation software and open it again, but this time using HMC820 settings (the lock…

  • Recommended regulators for ADI PLLs and VCOs

    PLL Recommended regulator
    Low power standalone PLLs and the ADF4360-x narrowband PLL/VCO family (< 100 mA); e.g. ADF41xx, ADF42xx, ADF4360-x

    Use the ADP150 regulator; good performance, low cost.

    Use…

  • How do I use the SPI Mode Selection feature on HMC PLL's & PLLVCO's?

    This note discusses best practices for use of the Serial Port Interface (SPI) Mode selection feature of HMC PLL and PLLVCO product lines.

  • 'Must Knows' about ADI's family of Hittite PLL+VCO and Clock Timing products

    The attached FAQ document provides additional information on the use of the PLL+VCO and Clock Timing family of products.  Specifically,

    the applicable products are:

    HMC820LP6CE             HMC821LP6CE             HMC822LP6CE             HMC824LP6CE             HMC826LP6CE

    HMC828LP6CE             HMC829LP6…