This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Does DS90CR286A require termination on the input side?

Other Parts Discussed in Thread: DS90CR286A

Posted on behalf of another user:

Does the DS90CR286A require termination on the input side?

  • Yes. The DS90CR286A LVDS inputs require a termination resistor with impedance equivalent (within 2%) to the nominal differential impedance of the transmission media. This is typically implemented with a single surface mount resistor connected across the signal pair as close to the receiver inputs as possible (no more than 1/2 inch away if the termination is placed in front of the receiver inputs). If the resistor is too far away from the receiver inputs, the line between the resistor and the receiver input takes on transmission line behavior and reflections may occur at the receiver inputs defeating the purpose of the termination resistor altogether. Here are a few resources you may find useful:

    Typical application block diagram: Link

    Channel Link PCB Interconnect and Design-in Guide (Refer to the "TERMINATION AT THE RX INPUTS" section):
    www.ti.com/.../snla008.pdf

    Channel Link Design Guide:
    www.ti.com/.../snla167

    Regards,
    Casey