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LMK00334: some technical questions during design

Part Number: LMK00334
Other Parts Discussed in Thread: LMK00338, CDCDB800, CDCDB400

Hi Sir,

May I have your help to answer some questions during customer is using our device?

1. Does LMK00334 support LP-HCSL?

2. There is a circuit in datasheet figure 9-6, if the source is CLK buffer to our LMK00334, where should we add this circuit?

In LMK00334 pin 14/15 or pin 3/4/6/7/18/19/21/22?

3. In LMK00338 EVM(snau155), C7 and C12 0.1uF is a must to add? Is there any reason?

Thank you.

Regards,

Allen

  • Hi Allen,

    1. LMK00334 does have normal HCSL output. CDCDB800/CDCDB400 do have LP-HCSL outputs.

    2. The resistors should be placed at the outputs of the LMK00334.

    3. AC coupling is optional, or depends on the input signal. Most input signal standards can be directly DC coupled to the device.

    Regards,

    Julian