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Original question:

TS3L110: Compliance test failed

TS3L110: TS3L110 Ethernet Compliance Test Failed - Solutions

Sinem ORHAN
Prodigy 10 points
Part Number: TS3L110

Hello Team,

We have a problem that the compliance test can't pass due to not enough voltage amplitude. Test results are around ± 680mV against the regulation between ±950mV and 1050mV. 

Our design is show below:

The voltage value at the input of the switches is about 2.5V but only one pin voltage value is 1.2V. How can I tell if it's before or after entering MUX? What could be the reasons for the low output voltage value?

Thank you in advance for your advise.

Best Regards,

  • 0
    TI__Mastermind 24440 points

    Hello Sinem, 

    Can you try to send the picture one more time. For some reason my computer wont let me see it.

    In addition we will probably have to take a look at the load(R and C)  connected  to mux. 

    To see if the voltage problem is before or after mux you can use a voltage probe on mux input and output

    Regards,

    Kameron