SLOS660C January   2010  – October 2015 TPA2028D1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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 Operating Characteristics
    7. 7.7 I2C Timing Requirements
    8. 7.8 Typical Characteristics
  8. 8 Parameter 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 Automatic Gain Control
      2. 9.3.2 Operation With DACs and CODECs
      3. 9.3.3 Filter Free Operation and Ferrite Bead Filters
      4. 9.3.4 General I2C Operation
        1. 9.3.4.1 Single- and Multiple-Byte Transfers
        2. 9.3.4.2 Single-Byte Write
        3. 9.3.4.3 Multiple-Byte Write and Incremental Multiple-Byte Write
        4. 9.3.4.4 Single-Byte Read
        5. 9.3.4.5 Multiple-Byte Read
    4. 9.4 Device Functional Modes
      1. 9.4.1 Enable/Disable Amplifier
      2. 9.4.2 TPA2028D1 AGC and Start-Up Operation
        1. 9.4.2.1 AGC Startup Condition
      3. 9.4.3 Short Circuit Auto-Recovery
    5. 9.5 Programming
      1. 9.5.1 TPA2028D1 AGC Recommended Settings
    6. 9.6 Register Maps
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Decoupling Capacitor CS
        2. 10.2.2.2 Input Capacitors CI)
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
    1. 11.1 Power Supply Decoupling Capacitors
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Component Placement
      2. 12.1.2 Trace Width
      3. 12.1.3 Pad Size
    2. 12.2 Layout Example
    3. 12.3 Efficiency and Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Fast AGC Start-up Time: 5 ms
  • Pinout Compatible with TPA2018D1
  • Filter-Free Class-D Architecture
  • 3 W Into 4 Ω at 5 V (10% THD+N)
  • 880 mW Into 8 Ω at 3.6 V (10% THD+N)
  • Power Supply Range: 2.5 V to 5.5 V
  • Flexible Operation With/Without I2C™
  • Programmable DRC/AGC Parameters
  • Digital I2C™ Volume Control
  • Selectable Gain from –28 dB to 30 dB in 1-dB Steps (when compression is used)
  • Selectable Attack, Release and Hold Times
  • 4 Selectable Compression Ratios
  • Low Supply Current: 1.8 mA
  • Low Shutdown Current: 0.2 μA
  • High PSRR: 80 dB
  • AGC Enable/Disable Function
  • Limiter Enable/Disable Function
  • Short-Circuit and Thermal Protection
  • Space-Saving Package
    • 1.63 mm × 1.63 mm Nano-Free™ DSBGA (YZF)

2 Applications

  • Wireless or Cellular Handsets and PDAs
  • Portable Navigation Devices
  • Portable DVD Player
  • Notebook PCs
  • Portable Radio
  • Portable Games
  • Educational Toys
  • USB Speakers

3 Description

The TPA2028D1 device is a mono, filter-free Class-D audio power amplifier with volume control, fast gain ramp SmartGain™, dynamic range compression (DRC), and automatic gain control (AGC). It is available in a 1.63 mm × 1.63 mm wafer chip-scale package (DSBGA).

The DRC/AGC function in the TPA2028D1 device is programmable through a digital I2C interface. The DRC/AGC function can be configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. The DRC/AGC can also be configured to protect the speaker from damage at high power levels and compress the dynamic range of music to fit within the dynamic range of the speaker. The gain can be selected from –28 dB to +30 dB in 1-dB steps. The TPA2028D1 is capable of driving 3 W at 5 V into a
4-Ω load or 880 mW at 3.6 V into an 8-Ω load. The device features hardware and software shutdown controls and also provides thermal and short-circuit protection. The TPA2028D1 has a faster AGC gain ramp during start-up than TPA2018D1.

In addition to these features, a fast start-up time and small package size make the TPA2028D1 an ideal choice for cellular handsets, PDAs and other portable applications.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPA2028D1 DSBGA (9) 1.63 mm x 1.63 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Application Diagram

TPA2028D1 sys_app_los660.gif

4 Revision History

Changes from B Revision (August 2012) to C Revision

  • Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo

Changes from A Revision (March 2011) to B Revision

Changes from * Revision (January 2010) to A Revision

  • Table 4, Changed Register 1, Bit7 From: 0 To: 1 Go