SLOS369G July   2002  – October 2015 TPA2005D1

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 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 Fully Differential Amplifier
        1. 9.3.1.1 Advantages of Fully Differential Amplifiers
      2. 9.3.2 Efficiency and Thermal Information
      3. 9.3.3 Eliminating the Output Filter with the TPA2005D1
        1. 9.3.3.1 Effect on Audio
        2. 9.3.3.2 Traditional Class-D Modulation Scheme
        3. 9.3.3.3 TPA2005D1 Modulation Scheme
        4. 9.3.3.4 Efficiency: Why You Must Use a Filter With the Traditional Class-D Modulation Scheme
        5. 9.3.3.5 Effects of Applying a Square Wave Into a Speaker
        6. 9.3.3.6 When to Use an Output Filter
      4. 9.3.4 Thermal and Short-Circuit Protection
    4. 9.4 Device Functional Modes
      1. 9.4.1 Summing Input Signals with the TPA2005D1
        1. 9.4.1.1 Summing Two Differential Input Signals
        2. 9.4.1.2 Summing a Differential Input Signal and a Single-Ended Input Signal
        3. 9.4.1.3 Summing Two Single-Ended Input Signals
      2. 9.4.2 Shutdown Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 TPA2005D1 with Differential Input
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Component Selection
          2. 10.2.1.2.2 Input Resistors (RI)
          3. 10.2.1.2.3 Decoupling Capacitor (CS)
        3. 10.2.1.3 Application Curves
      2. 10.2.2 TPA2005D1 with Differential Input and Input Capacitors
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
          1. 10.2.2.2.1 Input Capacitors (CI)
      3. 10.2.3 TPA2005D1 with Single-Ended Input
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
  11. 11Power Supply Recommendations
    1. 11.1 Power Supply Decoupling Capacitors
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Component Location
      2. 12.1.2 Trace Width
      3. 12.1.3 MicroStar Junior™ BGA Specifications
    2. 12.2 Layout Examples
  13. 13Device and Documentation Support
    1. 13.1 Community Resources
    2. 13.2 Trademarks
    3. 13.3 Electrostatic Discharge Caution
    4. 13.4 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DGN|8
  • DRB|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 1.4 W Into 8 Ω From a 5 V Supply at
    THD = 10% (Typ)
  • Maximum Battery Life and Minimum Heat
    • Efficiency With an 8-Ω Speaker:
      • 84% at 400 mW
      • 79% at 100 mW
    • 2.8-mA Quiescent Current
    • 0.5-μA Shutdown Current
  • Capable of Driving an
    8-Ω Speaker (2.5 V ≤ VDD ≤ 5.5 V) and a
    4-Ω Speaker (2.5 V ≤ VDD ≤ 4.2 V)
  • Only Three External Components
    • Optimized PWM Output Stage Eliminates LC Output Filter
    • Internally Generated 250-kHz Switching
      Frequency Eliminates Capacitor & Resistor
    • Improved PSRR (–71 dB at 217 Hz) and
      Wide Supply Voltage (2.5 V to 5.5 V)
      Eliminates Need for a Voltage Regulator
    • Fully Differential Design Reduces RF
      Rectification & Eliminates Bypass Capacitor
    • Improved CMRR Eliminates Two Input
      Coupling Capacitors
  • Space Saving Package
    • 3 mm × 3 mm QFN package (DRB)
    • 2.5 mm × 2.5 mm MicroStar Junior™ BGA Package (ZQY)
    • 3 mm x 5 mm MSOP PowerPAD™ Package (DGN)
  • Use TPA2006D1 for 1.8 V Logic Compatibility on Shutdown Pin

2 Applications

    Ideal for Wireless or Cellular Handsets and PDAs

3 Description

The TPA2005D1 is a 1.4-W high efficiency filter-free class-D audio power amplifier in a MicroStar Junior™ BGA, QFN, or MSOP package that requires only three external components.

Features like 84% efficiency, –71-dB PSRR
at 217 Hz, improved RF-rectification immunity, and
15 mm2 total PCB area make the TPA2005D1 ideal for cellular handsets. A fast start-up time of 9 ms with minimal pop makes the TPA2005D1 ideal for PDA applications.

In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the TPA2005D1. The device allows independent gain control by summing the signals from each function while minimizing noise to only 48 μVRMS.

The TPA2005D1 has short-circuit and thermal protection.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPA2005D1 HVSSOP (8) 3.00 mm × 3.00 mm
VSON (8) 3.00 mm x 3.00 mm
BGA MICROSTAR JUNIOR (15) 2.50 mm x 2.50 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Device Layout and Size

TPA2005D1 Ap_Cirpg2_los369.gif

Application Circuit

TPA2005D1 Ap_Cirpg1_los369.gif