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TDC1000-C2000EVM: Increasing the number of channels in EVM.

Samith Ashan
Prodigy 130 points
Part Number: TDC1000-C2000EVM
Other Parts Discussed in Thread: TMUX1104, SN74CBT3253C, TS5N214

Hi ,

I want to increase the number of receiving channels by using a external multiplexer. For this I have selected the following multiplexer.Is this multiplexer is suitable for this purpose.

l.workplace.com/l.php

  • 0
    TI__Mastermind 27940 points

    Hi Samith,

    I am unable to access the hyperlink. Can you provide the multiplexer part number instead?

    You'll want to ensure the multiplexer you select has a low ON-state resistance (Ron < 1 Ω). You can refer to TI's TS5Ax switch/multiplex series for examples. Otherwise, a large on-state resistance resistance between the receiving ultrasonic transducer and the input to the analog front end will increase the noise floor.

  • 0 in reply to Akeem Whitehead
    Prodigy 130 points

    Hi,

    Thank you for your reply.

    1.TMUX1104

    2.SN74CBT3253C

    3.TS5N214

    After your suggestion i selected above multiplexers with a low resistance. Is this mux suitable for it? and could please you recommend one?

    Is there any other method to increase the number of channels. I need to 3 receiving channels.

    Thank you

  • 0 in reply to Samith Ashan
    TI__Mastermind 27940 points

    Hi Samith,

    Your listed multiplexer options are all feasible. Using a multiplexer is my recommended option for expanding up to 3 receiving channels.