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MUX36S08EVM-PDK: How to power and use MUX36S08EVM

Minrak Kim
Intellectual 320 points
Part Number: MUX36S08EVM-PDK

Hello, I am Minrak and I am using MUX36S08EVM-PDK to multiplex TDC1000-TDC7200EVM.


I want to ask you about powering MUX36S08EVM-PDK.
When I look through the MUX36S08EVM-PDK User's guide, there seem to be two ways to power MUX36S08EVM-PDK .

1. The first one is dual power supply which requires negative voltage to VSS and Positive voltage to VDD. 
Can you check whether the schematic below is right? Do you think GND of power supply doesn't have to be connected to MUX?
I referred to TI guide video (https://training.ti.com/kr/mux-performance-demonstration-kit

2. In my case, I would prefer using single power supply to operate MUX and the user's guide says it can also be operated by single power mode.
I configured the schematic as below. Could you tell me if something is wrong?

Please tell me you have a problem in understanding my questions.

Best regards,
Minrak Kim

  • 0
    TI__Mastermind 25973 points

    Hey Minrak,

    1) You would need to connect the ground reference. Otherwise you wouldn't have a reference point for your signals and you would see unstable measurements. And the supply range there for the Vss/Vdd would be from +-5 to +-18 V. This can be both symmetrical or unsymmetrical and will determine the range of input signals the device can handle. 

    2) This looks good. Shorting Vss to GND and a Vdd between 10 - 36V is the proper way to power this using single sided power supply

    Hope this helps,
    Rami

  • 0 in reply to Rami Mooti1
    Intellectual 320 points

    Could you please explain whether the power supply affects results?


    BR,
    Minrak Kim

  • 0 in reply to Minrak Kim
    TI__Mastermind 25973 points

    Hey Minrak, 

    The datasheet for the MUX36S08 actually shows performance using single sided and dual supply. You'll see the parameters tested at the top of the electrical characteristics section (Looks like 7.5 is dual and 7.6 is single). 
    You'll see that there isn't much of a performance difference but you'll see slight improvements for the wider dual supply range in the on-resistance

    Hope this helps!
    Rami Mooti