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DS90UB638-Q1: Question about DS90UB635/638 for Security Cam application

Gary Teng
Genius 5840 points
Part Number: DS90UB638-Q1

Hi Sir,

 My customer want to find a solution for 2MP @ 60fps in security cam application and they think DS90UBUB635/638 might be ok for their design. And they have questions about our solution.

1. How long can our solution support by using Coaxial cable / STP cable?

2. For cost issue, can they use UTP 26QWG cable in their design?

3. Can tye use RJ12 connection to replace FAKRA connector if using STP or UTP cable?

 Thanks for your kindly help.

Regards,

Gary Teng

  • 0
    TI__Genius 16230 points

    Hello Gary,

    Gary Teng said:
     My customer want to find a solution for 2MP @ 60fps in security cam application and they think DS90UBUB635/638 might be ok for their design. And they have questions about our solution.

    Can you provide the actual resolution and video format the customer plans to use? This way we can calculate and make sure DS90UBUB635/638 will work.

    Gary Teng said:
    1. How long can our solution support by using Coaxial cable / STP cable?

    This is a hard question to answer as all this is dependent on the quality of the board design and cables being used. The main thing is to meet the channel requirements.

    Do they know the length they need?

    Gary Teng said:
    2. For cost issue, can they use UTP 26QWG cable in their design?

    This goes to the previous question all depends on the length of the cable. Lower quality cable will not allow for longer cable lengths. They will need to determine if they meet the channel spec.

    Gary Teng said:
    3. Can tye use RJ12 connection to replace FAKRA connector if using STP or UTP cable?

    On this, I haven't seen a system with RJ12. Do you know why they want to change?

    Glenn 

  • 0 in reply to Glenn Uranga
    Genius 5840 points

    Hi Gleen,

     Thanks for your response.

     They need around 6m cable by using RJ12 6P4C or 6P6C. One differential pair for data and another pair for 12V power. Do you think that's workable for fpdlink transmission?

    Regards,

    Gary

  • 0 in reply to Gary Teng
    TI__Genius 16230 points

    Gary,

    Let me align with the team to see if anyone has worked with RJ12. I will provide update by the end of the week.

    Glenn 

  • 0 in reply to Glenn Uranga
    TI__Genius 16230 points

    Hi Gary,

    The team hasn't worked with anyone directly on a RJ12 setup but was informed that as long as the system can meet the channel requirements there should be no issue. 

    Glenn 

  • 0 in reply to Glenn Uranga
    Genius 5840 points

    Hi Gleen,

     For surveilllance camera application, is there any economic suggestion about connector and cable in your preverious projects to meet impedance match and 4.2Gbps transmission by using FPDLINK?

    Gary

  • 0 in reply to Gary Teng
    TI__Guru** 103215 points

    Gary,

    I'm going to jump in here. Actually I find it difficult to believe that any cable using RJ12 could meet the performance requirements of these devices and they are qualified for shielded cable only, not UTP. 

    But as Glenn mentioned, the requirements all boil down to the channel requirements (scattering parameters). If you send me an E2E private message I an provide the channel requirements to you for evaluation and you would just want to check if your cable assembly/connector can meet that performance. 

    Again I highly doubt that RJ12 or UTP 26QWG cable can get anywhere close to the required S21 and S11 requirements for these parts. 

    Best Regards,
    Casey