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PCM9211: Recommendation for Coax amplifier

Simon Dahl
Intellectual 375 points
Part Number: PCM9211
Other Parts Discussed in Thread: THS4551, TLV3541

Hello,

do you have a recommendation for a coax amplifier at MPO0/MPO1?

Thank you very much,

Simon

  • 0
    TI__Guru 62705 points

    Hello Simon,

    The PCM9211 features two COAX amplifier inputs at RXIN0 and RXIN1.  Are you asking how to discretely build a COAX receiver channel external to the PCM9211 to accept more than two COAX inputs?

  • 0 in reply to Collin Wells
    Intellectual 375 points

    Hello Collin,

    I am looking for a coax output at the Ports MPO0/MPO1. They can be used as SPDIF outputs, but I want to use them as coax outputs - so I will need an amplifier.

    Do you have any recommendations for this purpose?

    Best regards,

    Simon

  • 0 in reply to Simon Dahl
    TI__Mastermind 23050 points

    Hi Simon,

    If you want to transmit the signal differentially then you may consider a fully-differential amplifier like the THS4551 to do the singled-ended to differential conversion and provide the power gain you need.

    If you plan to transmit single-ended then you might consider a device like the TLV3541 which offers rail-to-rail inputs and outputs and a drive current of +/-100mA. 

    There are many amplifiers that would likely suit your needs fine but I think these two offer a good starting point and we have TINA/pSpice models available for them so you can verify your circuit performance before building a pcb. Hope this helps!

    Best,

    Zak