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TLK2541 Transmission Distance

Evan Sawyer
Expert 3175 points

Hi Team,

I am working on a device which requires taking a 12-bit parallel bus input at 32 MSPS and transmitting the data over a 1 gig Ethernet connection. Is there any reason that the TLK2541 could not handle this (or is there a better part)? Also, is there a max transmission length that the TLK2541 is capable of handling (will most likely be using RF fiber)?

Thanks!!!

  • 0
    TI__Genius 16150 points

    Hi Evan,

    TLK2541 is a good option for their requirements:

     

    • Selectable 10 or 20 Bit Parallel TTL Compatible Data Interface.
    • One its application is Gigabit Ethernet and Fiber Channel Links.

     

    Regarding the length of the transmission, the maximum rate and distance of data transfer depends of the attenuation  characteristics of the media and the noise coupling to the environment. 

    Under right conditions should be work fine, although is important to mention the characteristics of the kind of fiber to use:

    Gigabit Fiber

    Standard

    Media

    Distance (Aprox)

    Wavelength

    1000BASE-SX

    62.5µm MMF

    220m

    850nm

    1000BASE-SX

    50µm MMF

    500m

    850nm

    1000BASE-LX

    62.5µm MMF

    550m

    1310nm

    1000BASE-LX

    50µm MMF

    550m

    1310nm

    1000BASE-LX/LH

    SMF

    10km

    1310nm

    1000BASE-ZX

    SMF

    70km

    1550nm

    To reduce the noise, for example, for unused pins (RXD & TXD) è It is good to force TX side into a known state you typically would terminate to protect against noise but the RX pins you can leave floating.

    Regards!

    Luis Omar Morán Serna

    High Speed Interface Group

    SWAT Team