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LMK03200 - 1MHz IN / 1MHz OUT, 0-delay mode

Kawai
Guru 19785 points
Other Parts Discussed in Thread: LMK03200, LMK03000

Hi, please let me ask about LMK03200 0-delay jitter cleaner.

Our customer is considering to use LMK03200 with 1MHz OSCin, 1MHz CLKout in 0-delay mode.

We have tried the simulation using clock design tool, but could not get the result.

Looking through the datasheet (MIN phase detector frequency, VCO divider, CLKout Divider, N divider), I think LMK03200 could be used for the 1MHz IN/OUT jitter cleaning in the following condition.

FOUT = 1200MHz
VCO DIV = 3
CLKout DIV = 400
N DIV = 1

Is this just the problem of Clock Design Tool or is the device not recommended for 1MHz IN/OUT condition ?

Best Regards,
Kawai

  • 0
    TI__Mastermind 28550 points

    Hello Kawai,

    You are correct - the LMK03200 can be used for 1 MHz in and 1 MHz out operation.  The reason the Clock Design Tool doesn't show LMK03200 as an option, is the LMK03200 was entered into the clock design tool without the VCO divider being used.  The LMK03200 is similar to LMK03000 except LMK03200 allows 0-delay or VCO divider bypass.

     - Please use LMK03000 for simulation/divider programming setup information for LMK03200 using VCO divider.  LMK03000 simulation and divider setup is substitute for LMK03200 when using VCO divider.

    Sorry for the confusion.

    73,

    Timothy

  • 0 in reply to Timothy T
    Guru 19785 points

    Timothy-san,

    I understand. Thank you for the answer.

    Best Regards,
    Kawai