SLASEO2 May   2019 TAS5806MD

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
      1. 7.7.1 Bridge Tied Load (BTL) Configuration Curves with 1 SPW Mode
      2. 7.7.2 Bridge Tied Load (BTL) Configuration Curves
      3. 7.7.3 Parallel Bridge Tied Load (PBTL) Configuration
      4. 7.7.4 Headphone Driver
      5. 7.7.5 Line Driver
  8. 8 Parametric Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Power Supplies
      2. 9.3.2 Device Clocking
      3. 9.3.3 Serial Audio Port – Clock Rates
      4. 9.3.4 Clock Halt Auto-recovery
      5. 9.3.5 Sample Rate on the Fly Change
      6. 9.3.6 Serial Audio Port - Data Formats and Bit Depths
      7. 9.3.7 Digital Audio Processing
      8. 9.3.8 Class D Audio Amplifier
        1. 9.3.8.1 Speaker Amplifier Gain Select
    4. 9.4 Device Functional Modes
      1. 9.4.1 Software Control
      2. 9.4.2 Speaker Amplifier Operating Modes
        1. 9.4.2.1 BTL Mode
        2. 9.4.2.2 PBTL Mode
      3. 9.4.3 Low EMI Modes
        1. 9.4.3.1 Minimize EMI with Spread Spectrum
        2. 9.4.3.2 Channel to Channel Phase shift
        3. 9.4.3.3 Multi-Devices PWM Phase Synchronization
      4. 9.4.4 Thermal Foldback
      5. 9.4.5 Headphone Control
      6. 9.4.6 Device State Control
      7. 9.4.7 Device Modulation
        1. 9.4.7.1 BD Modulation
        2. 9.4.7.2 1SPW Modulation
        3. 9.4.7.3 Hybrid Modulation
    5. 9.5 Programming and Control
      1. 9.5.1 I2 C Serial Communication Bus
      2. 9.5.2 Slave Address
        1. 9.5.2.1 Random Write
        2. 9.5.2.2 Sequential Write
        3. 9.5.2.3 Random Read
        4. 9.5.2.4 Sequential Read
        5. 9.5.2.5 DSP Memory Book, Page and BQ update
        6. 9.5.2.6 Example Use
        7. 9.5.2.7 Checksum
          1. 9.5.2.7.1 Cyclic Redundancy Check (CRC) Checksum
          2. 9.5.2.7.2 Exclusive or (XOR) Checksum
      3. 9.5.3 Control via Software
        1. 9.5.3.1 Startup Procedures
        2. 9.5.3.2 Shutdown Procedures
        3. 9.5.3.3 Protection and Monitoring
          1. 9.5.3.3.1 Overcurrent Shutdown (OCSD)
          2. 9.5.3.3.2 DC Detect
    6. 9.6 Register Maps
      1. 9.6.1 CONTROL PORT Registers
        1. 9.6.1.1  RESET_CTRL Register (Offset = 1h) [reset = 0x00]
          1. Table 7. RESET_CTRL Register Field Descriptions
        2. 9.6.1.2  DEVICE_CTRL_1 Register (Offset = 2h) [reset = 0x00]
          1. Table 8. DEVICE_CTRL_1 Register Field Descriptions
        3. 9.6.1.3  DEVICE_CTRL_2 Register (Offset = 3h) [reset = 0x10]
          1. Table 9. DEVICE_CTRL_2 Register Field Descriptions
        4. 9.6.1.4  I2C_PAGE_AUTO_INC Register (Offset = Fh) [reset = 0x00]
          1. Table 10. I2C_PAGE_AUTO_INC Register Field Descriptions
        5. 9.6.1.5  SIG_CH_CTRL Register (Offset = 28h) [reset = 0x00]
          1. Table 11. SIG_CH_CTRL Register Field Descriptions
        6. 9.6.1.6  CLOCK_DET_CTRL Register (Offset = 29h) [reset = 0x00]
          1. Table 12. CLOCK_DET_CTRL Register Field Descriptions
        7. 9.6.1.7  SDOUT_SEL Register (Offset = 30h) [reset = 0h]
          1. Table 13. SDOUT_SEL Register Field Descriptions
        8. 9.6.1.8  I2S_CTRL Register (Offset = 31h) [reset = 0x00]
          1. Table 14. I2S_CTRL Register Field Descriptions
        9. 9.6.1.9  SAP_CTRL1 Register (Offset = 33h) [reset = 0x02]
          1. Table 15. SAP_CTRL1 Register Field Descriptions
        10. 9.6.1.10 SAP_CTRL2 Register (Offset = 34h) [reset = 0x00]
          1. Table 16. SAP_CTRL2 Register Field Descriptions
        11. 9.6.1.11 SAP_CTRL3 Register (Offset = 35h) [reset = 0x11]
          1. Table 17. SAP_CTRL3 Register Field Descriptions
        12. 9.6.1.12 FS_MON Register (Offset = 37h) [reset = 0x00]
          1. Table 18. FS_MON Register Field Descriptions
        13. 9.6.1.13 BCK_MON Register (Offset = 38h) [reset = 0x00]
          1. Table 19. BCK_MON Register Field Descriptions
        14. 9.6.1.14 CLKDET_STATUS Register (Offset = 39h) [reset = 0x00]
          1. Table 20. CLKDET_STATUS Register Field Descriptions
        15. 9.6.1.15 CHANNEL_FORCE_HIZ Register (Offset = 40h) [reset = 0x01]
          1. Table 21. CHANNEL_FORCE_HIZ Register Field Descriptions
        16. 9.6.1.16 DIG_VOL_CTL Register (Offset = 4Ch) [reset = 30h]
          1. Table 22. DIG_VOL_CTR Register Field Descriptions
        17. 9.6.1.17 DIG_VOL_CTRL2 Register (Offset = 4Eh) [reset = 0x33]
          1. Table 23. DIG_VOL_CTRL2 Register Field Descriptions
        18. 9.6.1.18 DIG_VOL_CTRL3 Register (Offset = 4Fh) [reset = 0x30]
          1. Table 24. DIG_VOL_CTRL3 Register Field Descriptions
        19. 9.6.1.19 AUTO_MUTE_CTRL Register (Offset = 50h) [reset = 0x07]
          1. Table 25. AUTO_MUTE_CTRL Register Field Descriptions
        20. 9.6.1.20 AUTO_MUTE_TIME Register (Offset = 51h) [reset = 0x00]
          1. Table 26. AUTO_MUTE_TIME Register Field Descriptions
        21. 9.6.1.21 ANA_CTRL Register (Offset = 53h) [reset = 0x00]
          1. Table 27. ANA_CTRL Register Field Descriptions
        22. 9.6.1.22 AGAIN Register (Offset = 54h) [reset = 0x00]
          1. Table 28. AGAIN Register Field Descriptions
        23. 9.6.1.23 BQ_WR_CTRL1 Register (Offset = 5Ch) [reset = 0x00]
          1. Table 29. BQ_WR_CTRL1 Register Field Descriptions
        24. 9.6.1.24 DAC_CTRL Register (Offset = 5Dh) [reset = 0xF8]
          1. Table 30. DAC_CTRL Register Field Descriptions
        25. 9.6.1.25 ADR_PIN_CTRL Register (Offset = 60h) [reset = 0h]
          1. Table 31. ADR_PIN_CTRL Register Field Descriptions
        26. 9.6.1.26 ADR_PIN_CONFIG Register (Offset = 61h) [reset = 0x00]
          1. Table 32. ADR_PIN_CONFIG Register Field Descriptions
        27. 9.6.1.27 DSP_MISC Register (Offset = 66h) [reset = 0h]
          1. Table 33. DSP_MISC Register Field Descriptions
        28. 9.6.1.28 DIE_ID Register (Offset = 67h) [reset = 0h]
          1. Table 34. DIE_ID Register Field Descriptions
        29. 9.6.1.29 POWER_STATE Register (Offset = 68h) [reset = 0x00]
          1. Table 35. POWER_STATE Register Field Descriptions
        30. 9.6.1.30 AUTOMUTE_STATE Register (Offset = 69h) [reset = 0x00]
          1. Table 36. AUTOMUTE_STATE Register Field Descriptions
        31. 9.6.1.31 PHASE_CTRL Register (Offset = 6Ah) [reset = 0x00]
          1. Table 37. PHASE_CTR Register Field Descriptions
        32. 9.6.1.32 SS_CTRL0 Register (Offset = 6Bh) [reset = 0x00]
          1. Table 38. SS_CTRL0 Register Field Descriptions
        33. 9.6.1.33 SS_CTRL1 Register (Offset = 6Ch) [reset = 0x00]
          1. Table 39. SS_CTRL1 Register Field Descriptions
        34. 9.6.1.34 SS_CTRL2 Register (Offset = 6Dh) [reset = 0x50]
          1. Table 40. SS_CTRL2 Register Field Descriptions
        35. 9.6.1.35 SS_CTRL3 Register (Offset = 6Eh) [reset = 0x11]
          1. Table 41. SS_CTRL3 Register Field Descriptions
        36. 9.6.1.36 SS_CTRL4 Register (Offset = 6Fh) [reset = 0x24]
          1. Table 42. SS_CTRL4 Register Field Descriptions
        37. 9.6.1.37 CHAN_FAULT Register (Offset = 70h) [reset = 0x00]
          1. Table 43. CHAN_FAULT Register Field Descriptions
        38. 9.6.1.38 GLOBAL_FAULT1 Register (Offset = 71h) [reset = 0h]
          1. Table 44. GLOBAL_FAULT1 Register Field Descriptions
        39. 9.6.1.39 GLOBAL_FAULT2 Register (Offset = 72h) [reset = 0h]
          1. Table 45. GLOBAL_FAULT2 Register Field Descriptions
        40. 9.6.1.40 OT WARNING Register (Offset = 73h) [reset = 0x00]
          1. Table 46. OT_WARNING Register Field Descriptions
        41. 9.6.1.41 PIN_CONTROL1 Register (Offset = 74h) [reset = 0x00]
          1. Table 47. PIN_CONTROL1 Register Field Descriptions
        42. 9.6.1.42 PIN_CONTROL2 Register (Offset = 75h) [reset = 0xF8]
          1. Table 48. PIN_CONTROL2 Register Field Descriptions
        43. 9.6.1.43 MISC_CONTROL Register (Offset = 76h) [reset = 0x00]
          1. Table 49. MISC_CONTROL Register Field Descriptions
        44. 9.6.1.44 HP_CONTROL Register (Offset = 77h) [reset = 0x00]
          1. Table 50. HP_CONTROL Register Field Descriptions
        45. 9.6.1.45 FAULT_CLEAR Register (Offset = 78h) [reset = 0x00]
          1. Table 51. FAULT_CLEAR Register Field Descriptions
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Bootstrap Capacitors
      2. 10.1.2 Inductor Selections
      3. 10.1.3 Power Supply Decoupling
      4. 10.1.4 Output EMI Filtering
    2. 10.2 Typical Applications
      1. 10.2.1 2.0 (Stereo BTL) System
      2. 10.2.2 Design Requirements
      3. 10.2.3 Detailed Design Procedure
        1. 10.2.3.1 Step 1: Hardware Integration
        2. 10.2.3.2 Step2: Speaker Tuning
        3. 10.2.3.3 Software Integration
      4. 10.2.4 Application Curves
      5. 10.2.5 Mono (PBTL) system
      6. 10.2.6 Application Curves
  11. 11Power Supply Recommendations
    1. 11.1 DVDD Supply
    2. 11.2 PVDD Supply
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 General Guidelines for Audio Amplifiers
      2. 12.1.2 Importance of PVDD Bypass Capacitor Placement on PVDD Network
      3. 12.1.3 Optimizing Thermal Performance
        1. 12.1.3.1 Device, Copper, and Component Layout
        2. 12.1.3.2 Stencil Pattern
          1. 12.1.3.2.1 PCB footprint and Via Arrangement
          2. 12.1.3.2.2 Solder Stencil
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Device Nomenclature
      2. 13.1.2 Development Support
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Community Resources
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

10.1.2 Inductor Selections

It is required that the peak current is smaller than the OCP (Over current protection) value which is 5A, there are 3 cases which cause high peak current flow through inductor.

  1. During power up (idle state, no audio input), the duty cycle increases from 0 to θ.
    2. Equation 1. TAS5806MD peak-current-power-up.gif

    NOTE

    θ = 0.5 (BD Modulation), 0.14 (1SPW Modulation), 0.14 (Hybrid Modulation)

    Table 52. Peak current during power up

    PWM Modulation PVDD L (uH) C (uF) Fsw (kHz) Ipeak_power_up Comments
    BD Modulation (θ=0.5) 24 4.7 0.68 384 (80kHz BW) 6.07A (>5A OCP)
    1. Lower Switching Frequency only permits low Class D Loop Bandwidth, which cause worse THD+N.
    2. Lower Switching Frequency cause higher startup peak current, which needs Inductor supports higher saturation current.
    3. BD Mode has more switching loss than 1SPW mode, so the thermal performance is worse with high PVDD, recommend 1SPW mode for high PVDD case (Typical >16V case).
    4. Saturation current of Inductor needs >Ipeak_power_up .
    24 10 0.68 384 (80kHz BW) 3A
    12 4.7 0.68 384 (80kHz BW) 3.32A
    12 10 0.68 384 (80kHz BW) 1.55A
    24 4.7 0.68 768 (175kHz BW) 3.25A
    24 10 0.68 768 (175kHz BW) 1.55A
    1SPW Modulation (θ=0.14) 24 4.7 0.68 384 (80kHz BW) 1.84A
    1. 1SPW mode with smaller duty cycle during start up cause smaller Ipeak_power_up
    24 10 0.68 384 (80kHz BW) 0.87A
    12 4.7 0.68 384 (80kHz BW) 0.92A
    12 10 0.68 384 (80kHz BW) 0.44A
    12 4.7 0.68 768 (175kHz BW) 0.46A
    1. Even with same Inductor value, higher switching frequency cause smaller Ipeak_power_up which means some lower cost inductor with less saturation current is permitted.
    2. 768kHz switching frequency,175kHz Loop Bandwidth with 1SPW mode is a good balance for both thermal and audio performance.
    24 4.7 0.68 768 (175kHz BW) 0.93A
    24 10 0.68 768 (175kHz BW) 0.87A
  2. During music playing, some audio burst signal (high frequency) with very hard PVDD clipping will cause PWM duty cycle increase dramatically. This is the worst case and it rarely happens.
    3. Equation 2. TAS5806MD peak-current-clipping.gif

    Table 53. Peak current during PVDD clipping with Burst Signal

    PWM Modulation PVDD L (uH) Fsw (kHz) Ipeak_clipping Comments
    1SPW 24 10 768 2.68A For high PVDD case, 1SPW mode is a good option to improve thermal performance, but switching frequency can't be too low.
    24 10 576 3.58A
    24 10 384 5.37A (>5A OCP)
    12 10 768 1.34A
    12 4.7 768 2.86A
    BD 24 10 768 1.56
    24 10 384 3.12
    12 10 768 0.78
    12 4.7 768 1.66
  3. Peak current due to Max output power. Ignore the ripple current flow through capacitor here.
Equation 3. TAS5806MD peak-current-output-power.gif

Same PVDD and switching frequency, larger inductance means smaller idle current for lower power dissipation. It's suggested that inductor's saturation current Isat, is larger than the amplifier's peak current during power-up and play audio.

Equation 4. TAS5806MD sat-current.gif

In addition, the effective inductance at the peak current is required to be at least 80% of the inductance value in Table 54 to meet datasheet specifications. The minimum inductance is given in Table 54 .

Table 54. LC filter recommendation

PVDD (V) Switching Frequency (kHz) Modulation Scheme Recommended Minimum Inductance (µH) for LC filter design
≤12 384 BD 4.7 µH + 0.68 µF
>12 10 µH + 0.68 µF
≤12 384 1 SPW/Hybrid 10 µH + 0.68 µF
>12 15 µH + 0.68 µF

For higher switching frequency (Fsw), select inductors with minimum inductance to be 384 kHz/Fsw × L.