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TDC1000: Ultrasonic sensing for residue detection level

José Manuel Valero
Prodigy 10 points
Part Number: TDC1000
Other Parts Discussed in Thread: PGA460, TUSS4470

Dear Sir/Madame,

We are going to start a new project that consists a residue detection level by ultrasonic level. The power supply is a battery 3.6-3.7V, so we saw that the IC TDC1000 can be ideal for our project because it is 2.7-5.5V and ultra low power, but we have questions:

- Can this IC measure by air?

- The measurement range is up to 8 ms. Is it in miliseconds o meters? If it is miliseconds, the maximum distance is 1.36 meters (340m/s*0.008s/2)? Our preferred maximum distance is 4-5 meters.

You can give us all the information about the ultrasonic detection.

Thanks you and Best regards,

José Manuel.

  • 0
    TI__Genius 15026 points

    Hello José, 

    The TDC1000 is not recommended for newer TOF measurement applications, however we do not have any other devices suitable for the intended supply voltage.

    The measurement range is specified in milliseconds as the speed of sound varies depending on the medium. You are correct in your calculation of maximum sensing range being around 1.36 meters in air. 

    In this case, it may be beneficial to look towards using either the TUSS4470 or the PGA460 with a boost converter for the supply rail. The TUSS4470 has a minimum supply voltage specification of 5V and the PGA460 of 6V. 

    Both devices are capable of achieving maximum sensing distance in excess of 5 meters assuming the transmit waves are detectable. 

    Additionally, both devices have optional EVM's to help with the evaluation process for various sensing systems: BOOSTXL-PGA460  BOOSTXL-TUSS4470

    For additional information on selecting the best suited ultrasonic device, please see this E2E post: Ultrasonic E2E FAQ

    Please let me know if you have any questions,

    Thank you,

    Jacob