JAJSGO8F July   2013  – February 2020 TAS5760M

PRODUCTION DATA.  

  1. 1 特長
  2. 2 アプリケーション
  3. 3 概要
    1.     Device Images
      1.      機能ブロック図
      2.      10% THD+Nでの電力とPVDDとの関係
  4. 4 改訂履歴
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
    2.     Pin Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Digital I/O Pins
    5. 6.5  Master Clock
    6. 6.6  Serial Audio Port
    7. 6.7  Protection Circuitry
    8. 6.8  Speaker Amplifier in All Modes
    9. 6.9  Speaker Amplifier in Stereo Bridge Tied Load (BTL) Mode
    10. 6.10 Speaker Amplifier in Mono Parallel Bridge Tied Load (PBTL) Mode
    11. 6.11 I²C Control Port
    12. 6.12 Typical Idle, Mute, Shutdown, Operational Power Consumption
    13. 6.13 Typical Characteristics (Stereo BTL Mode): fSPK_AMP = 384 kHz
    14. 6.14 Typical Characteristics (Stereo BTL Mode): fSPK_AMP = 768 kHz
    15. 6.15 Typical Characteristics (Mono PBTL Mode): fSPK_AMP = 384 kHz
    16. 6.16 Typical Characteristics (Mono PBTL Mode): fSPK_AMP = 768 kHz
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
      1. 8.2.1 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Power Supplies
      2. 8.3.2 Speaker Amplifier Audio Signal Path
        1. 8.3.2.1 Serial Audio Port (SAP)
          1. 8.3.2.1.1 I²S Timing
          2. 8.3.2.1.2 Left-Justified
          3. 8.3.2.1.3 Right-Justified
        2. 8.3.2.2 DC Blocking Filter
        3. 8.3.2.3 Digital Boost and Volume Control
        4. 8.3.2.4 Digital Clipper
        5. 8.3.2.5 Closed-Loop Class-D Amplifier
      3. 8.3.3 Speaker Amplifier Protection Suite
        1. 8.3.3.1 Speaker Amplifier Fault Notification (SPK_FAULT Pin)
        2. 8.3.3.2 DC Detect Protection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Hardware Control Mode
        1. 8.4.1.1 Speaker Amplifier Shut Down (SPK_SD Pin)
        2. 8.4.1.2 Serial Audio Port in Hardware Control Mode
        3. 8.4.1.3 Soft Clipper Control (SFT_CLIP Pin)
        4. 8.4.1.4 Speaker Amplifier Switching Frequency Select (FREQ/SDA Pin)
        5. 8.4.1.5 Parallel Bridge Tied Load Mode Select (PBTL/SCL Pin)
        6. 8.4.1.6 Speaker Amplifier Sleep Enable (SPK_SLEEP/ADR Pin)
        7. 8.4.1.7 Speaker Amplifier Gain Select (SPK_GAIN [1:0] Pins)
        8. 8.4.1.8 Considerations for Setting the Speaker Amplifier Gain Structure
          1. 8.4.1.8.1 Recommendations for Setting the Speaker Amplifier Gain Structure in Hardware Control Mode
      2. 8.4.2 Software Control Mode
        1. 8.4.2.1 Speaker Amplifier Shut Down (SPK_SD Pin)
        2. 8.4.2.2 Serial Audio Port Controls
          1. 8.4.2.2.1 Serial Audio Port (SAP) Clocking
        3. 8.4.2.3 Parallel Bridge Tied Load Mode via Software Control
        4. 8.4.2.4 Speaker Amplifier Gain Structure
          1. 8.4.2.4.1 Speaker Amplifier Gain in Software Control Mode
          2. 8.4.2.4.2 Considerations for Setting the Speaker Amplifier Gain Structure
          3. 8.4.2.4.3 Recommendations for Setting the Speaker Amplifier Gain Structure in Software Control Mode
        5. 8.4.2.5 I²C Software Control Port
          1. 8.4.2.5.1 Setting the I²C Device Address
          2. 8.4.2.5.2 General Operation of the I²C Control Port
          3. 8.4.2.5.3 Writing to the I²C Control Port
          4. 8.4.2.5.4 Reading from the I²C Control Port
    5. 8.5 Register Maps
      1. 8.5.1 Control Port Registers - Quick Reference
      2. 8.5.2 Control Port Registers - Detailed Description
        1. 8.5.2.1  Device Identification Register (0x00)
          1. Table 9. Device Identification Register Field Descriptions
        2. 8.5.2.2  Power Control Register (0x01)
          1. Table 10. Power Control Register Field Descriptions
        3. 8.5.2.3  Digital Control Register (0x02)
          1. Table 11. Digital Control Register Field Descriptions
        4. 8.5.2.4  Volume Control Configuration Register (0x03)
          1. Table 12. Volume Control Configuration Register Field Descriptions
        5. 8.5.2.5  Left Channel Volume Control Register (0x04)
          1. Table 13. Left Channel Volume Control Register Field Descriptions
        6. 8.5.2.6  Right Channel Volume Control Register (0x05)
          1. Table 14. Right Channel Volume Control Register Field Descriptions
        7. 8.5.2.7  Analog Control Register (0x06)
          1. Table 15. Analog Control Register Field Descriptions
        8. 8.5.2.8  Reserved Register (0x07)
        9. 8.5.2.9  Fault Configuration and Error Status Register (0x08)
          1. Table 16. Fault Configuration and Error Status Register Field Descriptions
        10. 8.5.2.10 Reserved Controls (9 / 0x09) - (15 / 0x0F)
        11. 8.5.2.11 Digital Clipper Control 2 Register (0x10)
          1. Table 17. Digital Clipper Control 2 Register Field Descriptions
        12. 8.5.2.12 Digital Clipper Control 1 Register (0x11)
          1. Table 18. Digital Clipper Control 1 Register Field Descriptions
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Stereo BTL Using Software Control
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Startup Procedures- Software Control Mode
          2. 9.2.1.2.2 Shutdown Procedures- Software Control Mode
          3. 9.2.1.2.3 Component Selection and Hardware Connections
            1. 9.2.1.2.3.1 I²C Pullup Resistors
            2. 9.2.1.2.3.2 Digital I/O Connectivity
          4. 9.2.1.2.4 Recommended Startup and Shutdown Procedures
        3. 9.2.1.3 Application Curves
      2. 9.2.2 Stereo BTL Using Software Control, 32-Pin DAP Package Option
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
          1. 9.2.2.2.1 Startup Procedures- Software Control Mode
          2. 9.2.2.2.2 Shutdown Procedures- Software Control Mode
          3. 9.2.2.2.3 Component Selection and Hardware Connections
            1. 9.2.2.2.3.1 I²C Pullup Resistors
            2. 9.2.2.2.3.2 Digital I/O Connectivity
          4. 9.2.2.2.4 Recommended Startup and Shutdown Procedures
        3. 9.2.2.3 Application Curve
      3. 9.2.3 Stereo BTL Using Hardware Control, 32-Pin DAP Package Option
        1. 9.2.3.1 Design Requirements
        2. 9.2.3.2 Detailed Design Procedure
          1. 9.2.3.2.1 Startup Procedures - Hardware Control Mode
          2. 9.2.3.2.2 Shutdown Procedures - Hardware Control Mode
          3. 9.2.3.2.3 Digital I/O Connectivity
        3. 9.2.3.3 Application Curve
      4. 9.2.4 Mono PBTL Using Software Control, 32-Pin DAP Package Option
        1. 9.2.4.1 Design Requirements
        2. 9.2.4.2 Detailed Design Procedure
          1. 9.2.4.2.1 Startup Procedures - Software Control Mode
          2. 9.2.4.2.2 Shutdown Procedures - Software Control Mode
          3. 9.2.4.2.3 Component Selection and Hardware Connections
            1. 9.2.4.2.3.1 I²C Pull-Up Resistors
            2. 9.2.4.2.3.2 Digital I/O Connectivity
              1. 9.2.4.2.3.2.1 Application Curves
      5. 9.2.5 Mono PBTL Using Hardware Control, 32-Pin DAP Package Option
        1. 9.2.5.1 Design Requirements
        2. 9.2.5.2 Detailed Design Procedure
          1. 9.2.5.2.1 Startup Procedures - Hardware Control Mode
          2. 9.2.5.2.2 Shutdown Procedures - Hardware Control Mode
          3. 9.2.5.2.3 Digital I/O Connectivity
          4. 9.2.5.2.4 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 DVDD Supply
    2. 10.2 PVDD Supply
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 General Guidelines for Audio Amplifiers
      2. 11.1.2 Importance of PVDD Bypass Capacitor Placement on PVDD Network
      3. 11.1.3 Optimizing Thermal Performance
        1. 11.1.3.1 Device, Copper, and Component Layout
        2. 11.1.3.2 Stencil Pattern
          1. 11.1.3.2.1 PCB Footprint and Via Arrangement
            1. 11.1.3.2.1.1 Solder Stencil
    2. 11.2 Layout Example
  12. 12デバイスおよびドキュメントのサポート
    1. 12.1 ドキュメントのサポート
      1. 12.1.1 関連資料
    2. 12.2 サポート・リソース
    3. 12.3 商標
    4. 12.4 静電気放電に関する注意事項
    5. 12.5 Glossary
  13. 13メカニカル、パッケージ、および注文情報

8.4.1.8.1 Recommendations for Setting the Speaker Amplifier Gain Structure in Hardware Control Mode

  1. Determine the maximum power target and the speaker impedance which is required for the application.
  2. Calculate the required output voltage swing for the given speaker impedance which delivers the target maximum power.
  3. Chose the lowest gain setting via the SPK_GAIN[1:0] pins that produces an output voltage swing higher than the required output voltage swing for the target maximum power.

    4. NOTE

    A higher gain setting can be used, provided the noise performance is acceptable and the power delivered to the speaker remains within the safe operating area (SOA) of the speaker, using the soft clipper if necessary to set the clip point within the SOA of the speaker.
  4. Characterize the clipping behavior of the system at the rated power.
    • If the system does not produce the target power before clipping that is required, increase the gain setting.
    • If the system meets the power requirements, but clipping is preferred at the rated power, use the soft clipper to set the clip point
    • If the system makes more power than is required but the noise performance is too high, consider reducing the gain.
  5. Repeat Step 4 until the optimum balance of power, noise, and clipping behavior is achieved.