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BOOST-TUSS4470: About the interface of BOOST-TUSS4470

Annie Liu
Genius 10295 points

Part Number: BOOST-TUSS4470

Hi Team,

Customer would like to know below questions:

  1. BOOST-TUSS4470 is not used with MSP-EXP430F5529LP, but connected with other industrial control boards. Industrial control board is connected with SPI interface and ordinary IO port. 5V power supply. Is there anything else I need to pick up?
  2. How does he get the flight time to send ultrasound?
  3. How to connect the line of BOOST-TUSS4470 to the ultrasonic sensor probe?
  4. How to set 200KHZ ultrasonic sensor?
  5. How to set 300KHZ ultrasonic sensor?
  6. How to set the voltage output of the ultrasonic sensor?

Thanks,

Annie

  • 0
    TI__Genius 10295 points

    Hi Team,

    Is there any update for this case?

    Thanks,

    Annie

  • 0
    TI__Mastermind 27780 points

    Hi Annie,

    Please have the customer view the preliminary BOOST-TUSS44x0 EVM-GUI Overview and Quick Start Video at https://e2e.ti.com/support/sensors/f/1023/t/748143 to help get them started on using the GUI. A more in-depth official video training series is currently in development.

    Responding to the customer's questions below:

    1. The TUSS44x0 device requires to supply inputs, VPWR and VDD. VDD should be set based on the customers MCU logic level of 3.3V or 5.0V. VPWR can be set to a value between 5 to 36V.
    2. Initiating a time of flight command is dependent on the IO_MODE. Refer to TUSS4470 datasheet section 7.3.2 Burst Generation for detail on how to drive the transducer. To capture the echo envelope, an external ADC is required.
    3. Connect the transducer as follows: XDCR+ to OUTA and XDCR- to OUTB. XDCR+ should also be connected through the series R_INP and C_INP components to INP. Refer to TUSS4470 datasheet Figure 25 TUSS4470 Application Diagram to see an example schematic.
    5. To configure the device for 200 or 300kHz operation, refer to datasheet equations in Table 20 Recommended Component Values for Typical Applications to solve for the C_INN and C_FLT capacitor values as a function of transducer frequency. Be sure to set BPF_HPF_FREQ register value to most closely match the transducer frequency value.
    6. To set the drive voltage of the transducer, set VDRV_HI_Z register value = 0 (not Hi-Z) and then set the the VDRV_VOTLAGE_LEVEL register value = 5 to 20V. Note, VPWR must be >= VDRV_VOTLAGE_LEVEL.