• ADF4355-3  整数频点 有频偏的bug

    ADF4355-3 使用中的问题

    问题现象:

    PFD=50MHz

    50MHz的整数倍数频点, 3300MHz,6000MHz 等 会有频偏。

    频偏一定是 50MHz的整数倍 。  例如3300 偏移到3275MHz或者3325MHz (有/2); 6000MHz 频偏到6050MHz或者6100MHz。

    不是每次都有频偏,有时有有时没有

    已经确认过:

    1, 寄存器内容是对的;(示波器)

    2, 初始化的时候也有问题,即从R12一直配到R1, 延时160us, 然后 发送R0.

    疑…

  • ADF4355-3 Register

    Hi All,

    do you have a newer datasheet of ADF4355-3? I have Rev.A, but there are some inconsistencies. For example

    Register 5 (the description says it should be set to 0x00800005 but figure31 shows me 0x00800025).

    Register 10 (description says: Bits…

  • ADF4355-3 power supplies

    We are considering the ADF4355-3 for use as a LO source and would appreciate clarification of the VRF supply requirements.  The datasheet states VRF must be the same value as AVDD, which in turn must be the same as DVDD.  However the datasheet also recommends…

  • ADF4355-3 chip-enable power-down

    Are the registers preserved across a chip-enable = 0 (hardware power-down)?

    I appreciate that this subject has been covered for the ADF4159, but not for the ADF4355-3. And the data sheet is very vague in saying "In software power-down mode, the ADF4355…

  • Output power from the ADF4355-3

    Is it possible to increase the output power of the ADF4355-3 above the specified +5 dBm by combining the A and B outputs or some other similar trick?  There is an ambiguous reference to this possibility in the Datasheet Rev. B, page 24 under the discussion…

  • hi . how reduce adf4355-3 lock time?

    Hi

    I want to reduce lock time with adf4355-3

  • RE: ADF4355-3 sweep frequency with spurs ...

    Hi,

    someone in possession of the development board "EVAL-ADF4355-3" can try the same test ?

    Thanks very much.

    Gabriele

  • ADF4355-3 Evaluation Software can not work  normally in win7

    I bought EV-ADF4355-3SD1Z and EVAL-SDP-CS1Z.When I use ADF4355-3 Evaluation Software to control  EV-ADF4355-3SD1Z,The main controls panel can work normally. BUt the sweep and hop panel can not  help me realize the frequency sweep.I have tried in win7 and…

  • Can we use ADF4355-3 or any similiar product in a handheld radio that requires an FM modulated output frequency?

    Can we use ADF4355-3 or any similiar product in a handheld radio that requires an FM modulated output frequency? The radio has a channel spacing of 6.25kHz, 12.5 kHz, and 25 kHz.

    Best Regards.

    Muharrem Kara

  • ADF4355/ADF4355-2低温失锁

    你好,我在做ADF4355/ADF4355-2锁频时,遇到-40℃失锁问题。我使用的是10M参考,鉴相2M,输出1954MHz。