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Comparator to driver 50ohm load

Hi,

Could you please suggest me a comparator which can driver the 50ohm load. Currently we have used ADCMP600 in our design.

For any clarification feel free to ask me.

Regards

Anand M

  • Hi Anand M,

    Could you tell me more about the application you have in mind so we will be able to suggest the best part suited for your application. May I ask what is your target supply voltage?

    It would also be very helpful if you could able to share us your schematics as well.

    Thanks,

    Roel

  • Hi Roel,

    Thanks for the reply.

    The application is to drive the 50ohm load at the MMCX connector. For example, in our case the CLPD generates a 10MHz clock and this will be fed to a spectrum analyser as sync signal, In other way, a clock of 10MHz is fed in to our board (To CPLD) as a external sync. the power supply is 3.3V and attached is the schematic for your reference. Please let me know if there is any pin compatible replacement for existing comparator.

    For any more information please feel free to mail me back.

    Regards

    Anand M

  • Hi Roel,

    Could you please respond me quickly as possible.

    Looking forward to hear from you soon.

    Regrds,

    Anand M

  • Hi Anand M,

    Sorry for the delayed response. Thank you for sharing us your schematics. I'm still contacting the product expert for your application so we could able to suggest the suitable part for this. Unfortunately, there are no other parts that come out with 5-lead SOT23 aside from ADCMP600, have you already built a board for this?

    Thanks,

    Roel

  • Dear Roel,

    Thanks for the reply.

    The board is under revision and we have identified that the existing circuitry doesn't drive the 50ohm load. I would appriciate if you could suggest me the part which is suitable for my application no matter the pin count/package matches with the existing. I was just interested if there could be a pin/package compatible part to have one to one replacement.

    Let me know  if  you require more info

    Regards

    Anand M

  • Hi Anand M,

    Again, my apologies for the delayed response. ADCMP600 is designed to drive CMO/TTL loads, i.e. high impedance load. Something like the ADCMP606 would be more suitable as it is designed to drive 50-ohm loads that are terminated to VCCO, i.e. CML logic. The ADCMP606 can also be used in a ground referenced  CML configuration which is shown in the datasheet and may be of use to you.

     

     

    Thanks,

    Roel

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