SLDS250A December   2019  – May 2022 TUSS4440

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Power-Up Characteristics
    6. 6.6  Transducer Drive
    7. 6.7  Receiver Characteristics
    8. 6.8  Echo Interrupt Comparator Characteristics
    9. 6.9  Digital I/O Characteristics
    10. 6.10 Switching Characteristics
    11. 6.11 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Excitation Power Supply (VDRV)
      2. 7.3.2 Burst Generation
        1. 7.3.2.1 Burst Generation Diagnostics
      3. 7.3.3 Transformer Transducer Drive
      4. 7.3.4 Analog Front End
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
    6. 7.6 Register Maps
      1. 7.6.1 REG_USER Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Transformer Drive Configuration Options
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Transducer Driving Voltage
          2. 8.2.1.2.2 Transducer Driving Frequency
          3. 8.2.1.2.3 Transducer Pulse Count
          4. 8.2.1.2.4 Transformer Turns Ratio
          5. 8.2.1.2.5 Transformer Saturation Current and Main Voltage Rating
        3. 8.2.1.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.2.1.3 Application Curves

Figure 8-5 and Figure 8-6 show the typical ranging performance of a 40-kHz, closed-top transducer under nominal operating conditions as indicated in the Table 8-4. The targeted object is a PVC pole measuring 1000 mm in height and 75 mm in diameter. Notable device settings: LNA_GAIN = 0x0; VOUT_SCALE_SEL = 0x0; LOGAMP_DIS_FIRST = 0x0; LOGAMP_DIS_LAST = 0x1.

GUID-200840B1-FBF6-4ED5-93E1-FBBF7E7796FB-low.gifFigure 8-5 TUSS4440 40 kHz Ranging at 5-V Center Tap With Last Log-Amp Stage Disabled
GUID-E9CF2BAB-A892-4CA5-9505-2743E2146659-low.gifFigure 8-6 TUSS4440 40 kHz Ranging at 12-V Center Tap With Last Log-Amp Stage Disabled

Figure 8-7 and Figure 8-8 show the typical ranging performance of a 400-kHz, closed-top transducer under nominal operating conditions as indicated in the Table 8-4. The targeted object is an aluminum pole measuring 100 mm in height and 10 mm in diameter. Notable device settings: LNA_GAIN = 0x0; VOUT_SCALE_SEL = 0x0; LOGAMP_DIS_FIRST = 0x0; LOGAMP_DIS_LAST = 0x0.

GUID-9A2BB7C1-201B-4FF2-AC03-4389807B0D32-low.gifFigure 8-7 TUSS4440 400 kHz Ranging at 5-V Center Tap
GUID-FB7485A1-6CBA-46E9-9C4B-9FEA6F02F980-low.gifFigure 8-8 TUSS4440 400 kHz Ranging at 12-V Center Tap