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TDC7201: Impedance Matching for Comparator to STOP2 pin

Tyler Holmvik
Intellectual 811 points
Part Number: TDC7201
Other Parts Discussed in Thread: TLV3601,

Hi, 

Customer question: 

Is impedance matching required between the output of the comparator (TLV3601) and the input STOP2 pin of TDC7201?

Thanks,

Tyler

  • 0
    TI__Mastermind 41040 points

    Hi Tyler,

    In the TDC7201EVM, you will see that we have 49.9ohm resistors at the SMA connector for impedance matching in case long SMA cables are used.  It is important to note that the start and stop trace lengths should be matched to avoid uneven signal delay.