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CDCVF2310: CDCVF2310 reason of failure

amnon pomerants
Intellectual 780 points
Part Number: CDCVF2310

Hello

I have a card using the CDCVF2310PW chip as a clock distributer.

It receives a 3.3V TTL 100MHZ clock as an input.

Only the first bank is activated and I use it to generate four 100MHZ clocks, two for TLK2711 SerDes and 2 for my FPGAs (Actel proAsic, and Xilinx Virtex).

The last output of this bank is connected via a 47pF capacitor to GND.

The Vcc is a 3.3V coming via a filter of 1uF capacitor to GND followed by a BLM18PG471 serial bead.

I have already replaced this chip twice in the last half year of testing my card.

The power supply of this chip reported on over current withdrawal and when I replaced the chip the problem disappeared.

Can someone explain me why such failure happened twice and what I should examine and measure to investigate this issue?

I can not proceed from my engineering module card into "flying" module without being sure if this double failure is only a coincidence or a faulty design.

I will appreciate your prompt help on this issue.

Thanks

Amnon

  • 0
    TI__Genius 16845 points
    Hi Amnon,

    Based on your description of your usage of CDCVF2310, I don't see an issue with your design.

    If you would like, I can review this portion of your schematic document. If you do not wish to share your design information in a public forum, you can send an email to clock_support@list.ti.com.

    Kind regards,
    Lane
  • 0 in reply to Lane Boyd
    TI__Genius 16845 points
    Hi Amnon,

    I reviewed the schematic you emailed. The schematic looks fine.

    Please operate the device within the limitations given in the Absolute Maximum Rating Table. Applying stresses beyond Absolute Maximum Ratings can cause permanent damage to the device.

    Kind regards,
    Lane