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DS280MB810: high speed repeater product

Jung-Ho Seo
Expert 5940 points
Part Number: DS280MB810
Other Parts Discussed in Thread: DS125BR820, DS160PR410

Hi BU experts,

customer is looking for high speed signal(differential) repeater product like DS280MB810 

Requirement : 

1. Data rate: 6Gbps

2. Input/output common mode level : 200mV

3. Differential signal amplitude : 200mV(swing from 100mV to 300mV) 

Is it possible to use DS280MV810 to meet their requirements ? 

If not possible, Is there any product to be able to meet this requirement ? 

Thanks,

JH. 

  • 0
    TI__Guru* 93670 points

    Greetings,

    If you need cross point feature of the DS280MB810 then DS280MB810 is the part that can meet your requirements.

    Also, there DS125BR820 octal linear driver that could meet your application. Given your 6Gbps data rate, this could be a better option.

    Another option could be DS160PR410.

    Suggestion is to use IBIS-AMI model of these devices and system pcb s-parameter to do signal integrity analyses.

    Regards,, Nasser

  • 0 in reply to Nasser Mohammadi
    TI__Expert 5940 points

    Dear Nasser,

    Thanks for kind answer.

    Customer cannot use AC cap on output in their application(Display Panel). DS280MB810's output common mode voltage level is typ 0.96V in datasheet. So, they can't use this part.   

    I am not sure whether DS125BR820 is OK or not to receive input 200mVpp(VCM:200mV DC) and generate 200mVpp(VCM: 200mV DC) to output because there is no common mode DC spec in datasheet. would you give confirmation ?  

    Thanks,

    JH.

  • 0 in reply to Jung-Ho Seo
    TI__Expert 5940 points

    Dear Nasser,

    Also, they asked one more thing. 

    Of all the repeaters that can support 6Gbps, what product has the lowest DC common output level  ? 

    Thanks,

    JH.

  • 0 in reply to Jung-Ho Seo
    TI__Guru* 93670 points

    Hi JH,

    We don't have a part to support 0.2V DC common mode voltage voltage. Please note when DC coupling we need to worry about power sequencing and difference in common mode voltage which may cause return loss degradation and thus affecting signal integrity.

    Regards,, Nasser

     

  • 0 in reply to Nasser Mohammadi
    TI__Expert 5940 points

    Hi Nasser,

    Thanks for your kind answer,

    I will ask you if i need more help.

    Thanks,

    JH.