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TUSB211: May we know the TUSB211 insertion loss?

Chen Bogey8
Mastermind 9990 points

Part Number: TUSB211

Hi Sir 

we want have USB2.0 type A 20m cable project, and we have some question as below:

1. May we know the TUSB211 insertion loss is? 

2. May TUSB211 can series to use? we plan 2 stages. is it ok(or may you have other suggestion?)? what location suit to place?

                                                                                  Bogey

  • 0
    TI__Mastermind 36085 points

    Hello Bogey,

        20m is a long cable and may have DC loss issues. the TUSB211 is designed to improve the slew rate but it does not compensate the DC level. I suggest to reconsider and take into account the use of one USB HUB and at least two TUSB211.

    Regards,

    Diego.

  • 0 in reply to Diego Cortes
    Mastermind 9990 points

    Hi Diego

    Thanks for your suggestion.

    The customer is cable vender so they will not have hub. about Vbus power, we suggestion it can be powerd from device side or additional DC adapter in device side Vbus.

    So for 20M USB cable we may "HOST" + TUSB211=>10M cable + TUSB211 + 10M Cable + TUSB211(Adapter DC in Vbus).

    Is it ok? or something we need notice?

                                                                  Bogey

  • 0 in reply to Chen Bogey8
    TI__Mastermind 36085 points

    Hello Chen,

        The configuration is worth to try. I am only concerned about the DC loss on the D+ D- lines but I think it is possible.

    Regards,

    Diego.