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TDC1000: Transmit damping resistor

Saheel Sutaria
Prodigy 50 points
Part Number: TDC1000

The TDC1000-TDC7200 dev kit has a 200 ohm resistor on the transit line.  I've already maxed out the gain, and I'd like to boost the signal even more.  I can boost the signal by shorting out the resistor on the transmit line.  Are there any negative effects I should look out for while reducing the value of the transmit resistor?

  • 0
    TI__Mastermind 31655 points
    Hi Saheel,

    The best way to increase the transmit signal is to increase the number of TX pulses, and/or to increase the TX amplitude (increasing Vdd). The performance can degrade a bit when maxing out the RX gain, so it is best to increase the TX signal strength first if possible.

    The resistor you mention is there to damp any possible oscillations from the transducer, so it is not recommended to completely remove it. However, you can experiment with the value without completely removing it.

    Regards,