ZHCSJM6A April   2019  – October 2019 TAS6421-Q1

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     功能方框图
  4. 4 修订历史记录
  5. 5 说明（续）
  6. 6 Device Options
  7. 7 Pin Configuration and Functions
    1.     Pin Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Parameter Measurement Information
  10. 10Detailed description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1  Serial Audio Port
        1. 10.3.1.1 I2S Mode
        2. 10.3.1.2 Left-Justified Timing
        3. 10.3.1.3 Right-Justified Timing
        4. 10.3.1.4 TDM Mode
        5. 10.3.1.5 Supported Clock Rates
        6. 10.3.1.6 Audio-Clock Error Handling
      2. 10.3.2  DC Blocking
      3. 10.3.3  Volume Control and Gain
      4. 10.3.4  High-Frequency Pulse-Width Modulator (PWM)
      5. 10.3.5  Gate Drive
      6. 10.3.6  Power FETs
      7. 10.3.7  Load Diagnostics
        1. 10.3.7.1 DC Load Diagnostics
        2. 10.3.7.2 Line Output Diagnostics
        3. 10.3.7.3 AC Load Diagnostics
          1. 10.3.7.3.1 Impedance Magnitude Measurement
          2. 10.3.7.3.2 Impedance Phase Reference Measurement
          3. 10.3.7.3.3 Impedance Phase Measurement
      8. 10.3.8  Protection and Monitoring
        1. 10.3.8.1 Overcurrent Limit (ILIMIT)
        2. 10.3.8.2 Overcurrent Shutdown (ISD)
        3. 10.3.8.3 DC Detect
        4. 10.3.8.4 Clip Detect
        5. 10.3.8.5 Global Overtemperature Warning (OTW), Overtemperature Shutdown (OTSD)
        6. 10.3.8.6 Channel Overtemperature Warning [OTW(i)] and Shutdown [OTSD(i)]
        7. 10.3.8.7 Undervoltage (UV) and Power-On-Reset (POR)
        8. 10.3.8.8 Overvoltage (OV) and Load Dump
      9. 10.3.9  Power Supply
        1. 10.3.9.1 Vehicle-Battery Power-Supply Sequence
          1. 10.3.9.1.1 Power-Up Sequence
          2. 10.3.9.1.2 Power-Down Sequence
        2. 10.3.9.2 Boosted Power-Supply Sequence
      10. 10.3.10 Hardware Control Pins
        1. 10.3.10.1 FAULT
        2. 10.3.10.2 WARN
        3. 10.3.10.3 MUTE
        4. 10.3.10.4 STANDBY
    4. 10.4 Device Functional Modes
      1. 10.4.1 Operating Modes and Faults
    5. 10.5 Programming
      1. 10.5.1 I2C Serial Communication Bus
      2. 10.5.2 I2C Bus Protocol
      3. 10.5.3 Random Write
      4. 10.5.4 Sequential Write
      5. 10.5.5 Random Read
      6. 10.5.6 Sequential Read
    6. 10.6 Register Maps
      1. 10.6.1  Mode Control Register (address = 0x00) [default = 0x00]
        1. Table 9. Mode Control Field Descriptions
      2. 10.6.2  Miscellaneous Control 1 Register (address = 0x01) [default = 0x32]
        1. Table 10. Misc Control 1 Field Descriptions
      3. 10.6.3  Miscellaneous Control 2 Register (address = 0x02) [default = 0x62]
        1. Table 11. Misc Control 2 Field Descriptions
      4. 10.6.4  SAP Control (Serial Audio-Port Control) Register (address = 0x03) [default = 0x04]
        1. Table 12. SAP Control Field Descriptions
      5. 10.6.5  Channel State Control Register (address = 0x04) [default = 0x55]
        1. Table 13. Channel State Control Field Descriptions
      6. 10.6.6  Channel 1 Volume Control Register (address = 0x05) [default = 0xCF]
        1. Table 14. Ch 1 Volume Control Field Descriptions
      7. 10.6.7  DC Load Diagnostic Control 1 Register (address = 0x09) [default = 0x00]
        1. Table 15. DC Load Diagnostics Control 1 Field Descriptions
      8. 10.6.8  DC Load Diagnostic Control 2 Register (address = 0x0A) [default = 0x11]
        1. Table 16. DC Load Diagnostics Control 2 Field Descriptions
      9. 10.6.9  DC Load Diagnostic Report 1 Register (address = 0x0C) [default = 0x00]
        1. Table 17. DC Load Diagnostics Report 1 Field Descriptions
      10. 10.6.10 DC Load Diagnostics Report 3 Line Output Register (address = 0x0E) [default = 0x00]
        1. Table 18. DC Load Diagnostics Report 3 Line Output Field Descriptions
      11. 10.6.11 Channel State Reporting Register (address = 0x0F) [default = 0x40]
        1. Table 19. State-Reporting Field Descriptions
      12. 10.6.12 Channel Faults (Overcurrent, DC Detection) Register (address = 0x10) [default = 0x00]
        1. Table 20. Channel Faults Field Descriptions
      13. 10.6.13 Global Faults 1 Register (address = 0x11) [default = 0x00]
        1. Table 21. Global Faults 1 Field Descriptions
      14. 10.6.14 Global Faults 2 Register (address = 0x12) [default = 0x00]
        1. Table 22. Global Faults 2 Field Descriptions
      15. 10.6.15 Warnings Register (address = 0x13) [default = 0x20]
        1. Table 23. Warnings Field Descriptions
      16. 10.6.16 Pin Control Register (address = 0x14) [default = 0x00]
        1. Table 24. Pin Control Field Descriptions
      17. 10.6.17 AC Load Diagnostic Control 1 Register (address = 0x15) [default = 0x00]
        1. Table 25. AC Load Diagnostic Control 1 Field Descriptions
      18. 10.6.18 AC Load Diagnostic Control 2 Register (address = 0x16) [default = 0x00]
        1. Table 26. AC Load Diagnostic Control 2 Field Descriptions
      19. 10.6.19 AC Load Diagnostic Impedance Report Ch1 Register (address = 0x17) [default = 0x00]
        1. Table 27. Ch1 AC LDG Impedance Report Field Descriptions
      20. 10.6.20 AC Load Diagnostic Phase Report High Register (address = 0x1B) [default = 0x00]
        1. Table 28. AC LDG Phase High Report Field Descriptions
      21. 10.6.21 AC Load Diagnostic Phase Report Low Register (address = 0x1C) [default = 0x00]
        1. Table 29. AC LDG Phase Low Report Field Descriptions
      22. 10.6.22 AC Load Diagnostic STI Report High Register (address = 0x1D) [default = 0x00]
        1. Table 30. AC LDG STI High Report Field Descriptions
      23. 10.6.23 AC Load Diagnostic STI Report Low Register (address = 0x1E) [default = 0x00]
        1. Table 31. Ch1 AC LDG STI Low Report Field Descriptions
      24. 10.6.24 Miscellaneous Control 3 Register (address = 0x21) [default = 0x00]
        1. Table 32. Misc Control 3 Field Descriptions
      25. 10.6.25 Clip Control Register (address = 0x22) [default = 0x01]
        1. Table 33. Clip Control Field Descriptions
      26. 10.6.26 Clip Window Register (address = 0x23) [default = 0x14]
        1. Table 34. Clip Window Field Descriptions
      27. 10.6.27 Clip Warning Register (address = 0x24) [default = 0x00]
        1. Table 35. Clip Warning Field Descriptions
      28. 10.6.28 ILIMIT Status Register (address = 0x25) [default = 0x00]
        1. Table 36. ILIMIT Status Field Descriptions
      29. 10.6.29 Miscellaneous Control 4 Register (address = 0x26) [default = 0x40]
        1. Table 37. Misc Control 4 Field Descriptions
  11. 11Application and Implementation
    1. 11.1 Application Information
      1. 11.1.1 AM-Radio Band Avoidance
      2. 11.1.2 Demodulation Filter Design
      3. 11.1.3 Line Driver Applications
    2. 11.2 Typical Applications
      1. 11.2.1 BTL Application
        1. 11.2.1.1 Design Requirements
          1. 11.2.1.1.1 Communication
        2. 11.2.1.2 Detailed Design Procedure
          1. 11.2.1.2.1 Hardware Design
          2. 11.2.1.2.2 Digital Input and the Serial Audio Port
          3. 11.2.1.2.3 Bootstrap Capacitors
          4. 11.2.1.2.4 Output Reconstruction Filter
      2. 11.2.2 Application Curves
  12. 12Power Supply Recommendations
  13. 13Layout
    1. 13.1 Layout Guidelines
      1. 13.1.1 Electrical Connection of Thermal pad and Heat Sink
      2. 13.1.2 EMI Considerations
      3. 13.1.3 General Guidelines
    2. 13.2 Layout Example
    3. 13.3 Thermal Considerations
  14. 14器件和文档支持
    1. 14.1 文档支持
      1. 14.1.1 相关文档
    2. 14.2 接收文档更新通知
    3. 14.3 社区资源
    4. 14.4 商标
    5. 14.5 静电放电警告
    6. 14.6 Glossary

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

3 说明

TAS6421-Q1 器件是一款单通道数字输入 D 类 Burr-Brown™音频放大器，采用了 2.1MHz PWM 开关频率，能以非常小的 PCB 尺寸实现成本优化的解决方案，可针对启停事件在低至 4.5V 的电压下全面运行，并可在高达 40kHz 的音频带宽下提供出色的音质。TAS6421-Q1 的尺寸和引脚与 TAS642x-Q1 系列器件兼容，实现了灵活性，只需进行极少的重新设计即可轻松支持多种系统配置。

输出开关频率既可以设置为高于调幅 (AM) 频带，以消除 AM 频带干扰并降低输出滤波需求及成本；也可以设置为低于 AM 频带，以优化器件效率。该器件具有内置负载诊断功能，用于检测和诊断误接的输出，以及检测交流耦合的高频扬声器。

器件信息(1)

器件型号 封装 封装尺寸（标称值）
TAS6421-Q1 HSSOP (56) 18.41mm × 7.49mm
  1. 如需了解所有可用封装，请参阅数据表末尾的可订购米6体育平台手机版_好二三四附录。

功能方框图

TAS6421-Q1 fbd-SLOSE32.gif
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