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PGA460: can this IC be used to make a underwater sonar

thomas ijsseldijk
Prodigy 20 points
Part Number: PGA460
Other Parts Discussed in Thread: TUSS4470, TUSS4440

Tool/software:

Hi everyone,

I'm a graduate student working on a project to develop a device to measure the distance to a swimmer in a swimming pool using a sonar sensor. During my research, I came across the PGA460 IC. I have two questions:

  1. Can the PGA460 IC be used to create an underwater sonar system?

  2. What kind of sonar transducer should I use? So far, I have only found high-power transducers designed for ships (300W or more), but I need a low-power transducer suitable for underwater use with a range of max 10m.

Thank you in advance for your help!

  • 0
    TI__Mastermind 23045 points

    Hello Thomas,

    Thanks for posting to the sensors forum!

    The PGA460 can be used to create an underwater sonar system. One thing to keep in mind is what your selected frequency will be for the transducer. The other devices that we have had other customers use for underwater sonar applications have been the TUSS4470 or TUSS4440.

    There is a tradeoff to the selected transducer, the higher frequency a transducer is the better measurement resolution it will have but the higher frequency transducers are not able to carry as much energy, so the signal will attenuate faster than it would with a lower frequency transducer meaning you may not be able to travel as far. We have a list of transducers we have used in the past if you would like to start looking there: https://www.ti.com/lit/zip/slac787

    But finding the right combination of frequency and voltage may require some testing to fight the right combination that will work for your application.

    Best,

    Isaac