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Need Help in selecting a part

Hi,

Need to select a SPDT multiplexer which would select one of the inputs and connect to the output based on the select inputs of the multiplexer

Input 1 : A sense signal ( Output of a TLV271 opamp)

Input 2 : A sense signal ( Output of a TLV271 opamp)

Based on the select signal (0 or 1) I need one of the inputs to be relayed to the output pin of the multiplexer.

Requirements:

Bandwidth > 10MHz ( To make sure that the relayed signal does not have any phase lag introduced).

Resistance of the path < 10E

Current carrying capability of the switch : < 10mA (Ok, even if its more)

Supply voltage: 5V and 12V( Two different cases)

Regards,

Rajesh Sura

  • Also, The output of the multiplexer will be connected to another opamp down stream in differential configuration.
  • In reply to rajesh sura:

    Rajesh,

    I couldn't find a perfect match for all of your requirements above.

    I have a new 2-channel 2:1 device that will support the 5V case TMUX1072.

    I also found the TS12A12511 to support the 12V case but you would need to use 2 of them for your differential signaling.

    Would these work for you?

    Thank you,
    Adam
  • In reply to Adam Torma:

    Dear Adam,

    Thanks for your prompt reply.
    TMUX1072 looks fine.
    Is it possible to have resistance less than 2 Ohms aswell. Lesser the better.

    Is there a 4 Channel version of this.

    Also, I did not understand this statement "I couldn't find a perfect match for all of your requirements above."..

    Which paramter do you think would not satisfy the requirements posted by me?

    Regards,
    Rajesh
  • In reply to rajesh sura:

    Rajesh,

    The difficult spec to match to a part is the 12V requirements with multiple channels.  

    There are plenty of 5 V 4-channel 2:1 options below on ti.com.

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