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clock generator

eli
Guru 13485 points
Other Parts Discussed in Thread: CDCM61004, CDCM61001, CDCM61002, CDCM6208

Looking for 3  clock generator devices,with input of  25MHZ to generate:

1. 4 outputs of 200M each  (like NB3N51034 form ON)

2. 1 output od 200M each  (like NB3N3002 from On)

3. 2 output of 125M (Like NB3N5573 from ON)

  • 0
    TI__Mastermind 32575 points

    Here are a couple suggestions:

    Option #1: 3 chip solution, pin strap configuration

    1. CDCM61004 - Use termination scheme to level-shift LVPECL to HCSL levels per Figure 25 in datasheet

    2. CDCM61001 - Use termination scheme to level-shift LVPECL to HCSL levels

    3. CDCM61002 - Use termination scheme to level-shift LVPECL to HCSL levels

    Option #2: 1 chip solution, I2C/SPI configuration

    CDCM6208 - 8 output clock gen with programmable outputs frequency/format.  It has 4 true HCSL outputs + 4 LVPECL-like outputs which could be AC-coupled and level-shifted to HCSL levels using Thevenin-equivalent 50-ohm termination (471 ohms to 3.3V, 56 ohms to GND).

    Regards,
    Alan