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Selection of Jitter Cleaner

Sadanori Kato
Guru 36540 points

Other Parts Discussed in Thread: LMK04906, CODELOADER, LMK04828

Hi,

Could you please suggest the appropriate product to us as following requirements from the jitter cleaner solution ?
Is our understanding correct although we will try to suggest LMK04906 to our customer ?
In addition, could you please tell us how to configure LMK04906 and share the sample schematic including the external components if it is correct ?

<Requirements>
Clock Input Frequency Range          : 10MHz ~ 50MHz
Clock Output Frequency Range         : 10MHz ~ 50MHz
Ratio of Output to Input Frequency   : 1[MHz/MHz](0dB)
Input Level                          : LVCMOS
Output Level                         : LVCMOS

Best regards,
Kato

  • 0
    TI__Mastermind 20900 points
    Hello Kato,

    the LMK04906 is a high performance jitter cleaner. It requires an external VCXO for the jitter cleaning.
    in the user guide is an example schematic: www.ti.com/.../snau126
    With Codeloader you can generate configurations: www.ti.com/.../codeloader

    How many inputs/outputs are needed?
    What is the input noise and what is the expected output performance?

    best regards,
    Julian
  • 0 in reply to Julian Hagedorn
    Guru 36540 points

    Hi Julian-san,

    Thank you for your response.
    I have got the user guide and the codeloader for the LMK04906 evaluation board.
    The requirements are shown as below.
    I have suggested LMK04906 to our customer although it does not meet the operating temperature range.
    So, do you have the jitter cleaner solution with an adoption result in the automotive product ?

    <Requirements>
    Application                          : Automotive Product
    Clock Input Frequency Range          : 10MHz ~ 50MHz
    Clock Output Frequency Range         : 10MHz ~ 50MHz
    Ratio of Output to Input Frequency   : 1[MHz/MHz](0dB)
    Input Level                          : LVCMOS
    Output Level                         : LVCMOS
    Input Ports #                        : 1
    Output Ports #                       : 1
    Input Noise                          : TBD
    Output Noise(Jitter)                 : TBD
    Ta                                   : -30℃ ~ 105℃

    Best regards,
    Kato

  • 0 in reply to Sadanori Kato
    TI__Mastermind 20900 points
    Hello Kato,

    LMK04828 is specified to -40 to 105C PCB board temperature. We dont have a auto qual jitter cleaner.
    What is the input noise and what is the expected output performance (jitter)?

    best regards,
    Julian
  • 0 in reply to Julian Hagedorn
    Guru 36540 points

    Hi Julian-san

    Thank you for your suggestion.
    Unfortunately, we have not got the requirements for the input and output noise(jitter) since our customer gives priority to an operating temperature when selecting the jitter cleaner.
    So, we will inform him of your information, however LMK04848 is very expensive.

    Best regards,
    Kato