SLAS965D September   2013  – October 2018 TAS5766M , TAS5768M

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Smart Amplifier Overview
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     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 Thermal Information
    5. 6.5 DC Electrical Characteristics
    6. 6.6 AC Electrical Characteristics
    7. 6.7 Electrical Characteristics
    8. 6.8 Timing Requirements - I2C Bus Timing
    9. 6.9 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 Smart SOA
      2. 7.3.2 Smart BASS
      3. 7.3.3 Smart Protection
      4. 7.3.4 Implementing a Real World Design
      5. 7.3.5 Modulation Schemes
        1. 7.3.5.1 BD-Modulation
        2. 7.3.5.2 1SPW-Modulation
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Protection System
        1. 7.4.1.1 Over Current Protection
        2. 7.4.1.2 Thermal Protection
        3. 7.4.1.3 DC Protection
      2. 7.4.2 Reset and System Clock Functions
        1. 7.4.2.1 Power-On Reset Function
        2. 7.4.2.2 System Clock Input
      3. 7.4.3 System Clock PLL Mode
      4. 7.4.4 Clock Generation and PLL
      5. 7.4.5 PLL Calculation
      6. 7.4.6 Audio Data Interface
        1. 7.4.6.1 Audio Serial Interface
        2. 7.4.6.2 PCM Audio Data Formats and Timing
      7. 7.4.7 TAS576xM Audio Processing Options
        1. 7.4.7.1  Overview
        2. 7.4.7.2  miniDSP Instruction Register
        3. 7.4.7.3  Digital Output
        4. 7.4.7.4  Software
        5. 7.4.7.5  Process Flow
        6. 7.4.7.6  Zero Data Detect
        7. 7.4.7.7  Power Save Modes
        8. 7.4.7.8  XSMT Pin (Soft Mute/Soft Un-Mute)
        9. 7.4.7.9  External Power Sense Undervoltage Protection Mode
        10. 7.4.7.10 Recommended Power Down Sequence
          1. 7.4.7.10.1 XSMT = 0
          2. 7.4.7.10.2 Clock Error Detect
          3. 7.4.7.10.3 Planned Shutdown
    5. 7.5 Programming
      1. 7.5.1 I2C Interface and Slave Address
      2. 7.5.2 Slave Address
      3. 7.5.3 Register Address Auto-Increment Mode
      4. 7.5.4 Packet Protocol
        1. Table 18. Read / Write Operation – Basic I2C Framework
      5. 7.5.5 Write Register
        1. Table 19. Write Operation
        2. 7.5.5.1   Read Register
          1. Table 20. Read Operation
    6. 7.6 Register Maps
  8. 8 Applications and Implementation
    1. 8.1 Application Information
      1. 8.1.1 External Component Selection Criteria
      2. 8.1.2 Component Selection Impact on Board Layout, Component Placement, and Trace Routing
      3. 8.1.3 Amplifier Output Filtering
    2. 8.2 Typical Applications
      1. 8.2.1 Stereo Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Gain Setting and Output Switch Frequency
          2. 8.2.1.2.2 Gain Setting and Supply Voltage
          3. 8.2.1.2.3 DAC to AMP AC Coupling
          4. 8.2.1.2.4 Bootstrap Capacitors
        3. 8.2.1.3 BTL Application Curves
      2. 8.2.2 Mono/PBTL Application
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 PBTL Application Curves
      3. 8.2.3 QFN BTL Application Diagram
        1. 8.2.3.1 Design Requirements
  9. 9 Power Supply Recommendations
    1. 9.1 AVDD, DVDD, CPVDD Supply
    2. 9.2 GVDD Supply
    3. 9.3 PVCC, AVCC Power Supply
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Examples
  11. 11Register Map Information
    1. 11.1 Detailed Register Map Descriptions
      1. 11.1.1 Register Map Summary
      2. 11.1.2 Page 0 Registers
        1. 11.1.2.1  Page 0 / Register 1 (Hex 0x01)
        2. 11.1.2.2  Page 0 / Register 2 (Hex 0x02)
        3. 11.1.2.3  Page 0 / Register 3 (Hex 0x03)
        4. 11.1.2.4  Page 0 / Register 4 (Hex 0x04)
        5. 11.1.2.5  Page 0 / Register 7 (Hex 0x07)
        6. 11.1.2.6  Page 0 / Register 8 (Hex 0x08)
        7. 11.1.2.7  Page 0 / Register 9 (Hex 0x09)
        8. 11.1.2.8  Page 0 / Register 10 (Hex 0x0A)
        9. 11.1.2.9  Page 0 / Register 12 (Hex 0x0C)
        10. 11.1.2.10 Page 0 / Register 13 (Hex 0x0D)
        11. 11.1.2.11 Page 0 / Register 20 (Hex 0x14)
        12. 11.1.2.12 Page 0 / Register 21 (Hex 0x15)
        13. 11.1.2.13 Page 0 / Register 22 (Hex 0x16)
        14. 11.1.2.14 Page 0 / Register 23 (Hex 0x17)
        15. 11.1.2.15 Page 0 / Register 24 (Hex 0x18)
        16. 11.1.2.16 Page 0 / Register 27 (Hex 0x1B)
        17. 11.1.2.17 Page 0 / Register 28 (Hex 0x1C)
        18. 11.1.2.18 Page 0 / Register 29 (Hex 0x1D)
        19. 11.1.2.19 Page 0 / Register 30 (Hex 0x1E)
        20. 11.1.2.20 Page 0 / Register 32 (Hex 0x20)
        21. 11.1.2.21 Page 0 / Register 33 (Hex 0x21)
        22. 11.1.2.22 Page 0 / Register 34 (Hex 0x22)
        23. 11.1.2.23 Page 0 / Register 35 (Hex 0x23)
        24. 11.1.2.24 Page 0 / Register 36 (Hex 0x24)
        25. 11.1.2.25 Page 0 / Register 37 (Hex 0x25)
        26. 11.1.2.26 Page 0 / Register 40 (Hex 0x28)
        27. 11.1.2.27 Page 0 / Register 41 (Hex 0x29)
        28. 11.1.2.28 Page 0 / Register 42 (Hex 0x2A)
        29. 11.1.2.29 Page 0 / Register 43 (Hex 0x2B)
        30. 11.1.2.30 Page 0 / Register 44 (Hex 0x2C)
        31. 11.1.2.31 Page 0 / Register 59 (Hex 0x3B)
        32. 11.1.2.32 Page 0 / Register 65 (Hex 0x41)
        33. 11.1.2.33 Page 0 / Register 66 (Hex 0x42)
        34. 11.1.2.34 Page 0 / Register 82 (Hex 0x52)
        35. 11.1.2.35 Page 0 / Register 83 (Hex 0x53)
        36. 11.1.2.36 Page 0 / Register 84 (Hex 0x54)
        37. 11.1.2.37 Page 0 / Register 85 (Hex 0x55)
        38. 11.1.2.38 Page 0 / Register 86 (Hex 0x56)
        39. 11.1.2.39 Page 0 / Register 87 (Hex 0x57)
        40. 11.1.2.40 Page 0 / Register 90 (Hex 0x5A)
        41. 11.1.2.41 Page 0 / Register 91 (Hex 0x5B)
        42. 11.1.2.42 Page 0 / Register 92 (Hex 0x5C)
        43. 11.1.2.43 Page 0 / Register 93 (Hex 0x5D)
        44. 11.1.2.44 Page 0 / Register 94 (Hex 0x5E)
        45. 11.1.2.45 Page 0 / Register 95 (Hex 0x5F)
        46. 11.1.2.46 Page 0 / Register 108 (Hex 0x6C)
        47. 11.1.2.47 Page 0 / Register 118 (Hex 0x76)
        48. 11.1.2.48 Page 0 / Register 119 (Hex 0x77)
        49. 11.1.2.49 Page 0 / Register 120 (Hex 0x78)
        50. 11.1.2.50 Page 0 / Register 121 (Hex 0x79)
      3. 11.1.3 Page 1 Registers
        1. 11.1.3.1 Page 1 / Register 2 (Hex 0x02)
        2. 11.1.3.2 Page 1 / Register 5 (Hex 0x05)
        3. 11.1.3.3 Page 1 / Register 6 (Hex 0x06)
        4. 11.1.3.4 Page 1 / Register 7 (Hex 0x07)
        5. 11.1.3.5 Page 1 / Register 8 (Hex 0x08)
      4. 11.1.4 Page 44 Registers
        1. 11.1.4.1 Page 44 / Register 1 (Hex 0x01)
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

7.1 Overview

The TAS576xM PurePath Smart Amp enhance the bass, sound fidelity and increased loudness by driving the speaker to its thermal and mechanical limits.

The TAS576xM contains two BTL class-D amplifiers that supply up to 2 x 50W peak power into 4 Ω. The amplifier is thermally designed to match the typical speaker so it can withstand high peaks for the time it takes the speaker voice-coil to heat up; it then lowers the average power to safe operating limits.

The wide supply range of 4.5 V to 26.4 V enables the use of different power supply options from 2-cell Li-Ion batteries to fixed 24-V supply.

The Smart Amp is available with two different class-D amplifier modulations: BD-mode in the TAS5766M; and, 1SPW-mode in the TAS5768M.

TI's PurePath Smart Amp technology allows speakers to be driven with more peak power than their average-power rating, without damage to the speaker by voice coil over excursion or thermal overload.

Sophisticated speaker models (electro-mechanical-thermal) are used as a foundation for the protection and enhancement of the system. This is done by modeling the loudspeaker in the on-chip miniDSP and running an adaptive algorithm that modifies the output based on the modeled conditions of the speaker.

TI provides a PurePath Console (PPC) GUI, including a TI learning board that measures the loudspeaker parameters. The PPC GUI generates the code for download to the device on boot-up.

Smart Amp technology in the TAS576xM uses information from the SOA (Safe Operating Area) characterization details for the loudspeaker, as well as real-world temperature, and uses this data in an adaptive control algorithm in order to control Smart Bass and Smart DRP (Dynamic Range Preservation). The protection side of the algorithm is also used for thermal protection and mechanical voice coil excursion protection.