JAJSIA9A December   2019  – May 2022 TUSS4440

PRODUCTION DATA  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
  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 サポート・リソース
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

8.2 Typical Application

GUID-15CDBFE6-6201-4F6C-BF7C-CF38053865F6-low.gifFigure 8-1 TUSS4440 Application Diagram
Table 8-1 Recommended Component Values for Typical Applications
DESIGNATORVALUECOMMENT
RPWR10 ΩOptional (to limit fast voltage transient on VPWR pin during power up)
R(INP) 3kΩ (1/4 Watt)Optional for EMI/ESD robustness
CPWR150V, 100nF
CPWR240V, 100µF
CVDD>5V, 10nF
CINP40V, 330pF
CINN>5V, CINNUse equation below to estimate value of CINN depending on the burst frequency
Equation 2. GUID-76D4A416-0BAF-43C7-B028-9E218FA7A0AF-low.gif
CFLT5V, CFLTUse equation below to estimate value of CFLT depending on the burst frequency . Value has to be optimized for application depending on noise and response time requirements.
Equation 3. GUID-C1AC5729-4DD0-4520-B57E-76F95610CD72-low.gif
CTOptional. Value depends on transducer and transformer used
RTOptional. Value depends on transducer and transformer used
D11N4001 or equivalentOptional for reverse supply and reverse current protection.
XDCR (transducer)Example devices for low-frequency range:
Closed top: 40 kHz: PUI Audio UTR-1440K-TT-R
Open top: muRata MA40H1S-R, SensComp 40LPT16, Kobitone 255-400PT160-ROX
Example devices for high-frequency range:
Closed top: 300 kHz: Murata MA300D1-1
XFMR (transformer)Example devices:
TDK EPCOS B78416A2232A003, muRata-Toko N1342DEA-0008BQE=P3, Mitsumi K5-R4