SLOS490C July   2006  – November 2015

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 Dissipation Ratings
    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 Fully Differential Amplifiers
        1. 9.3.1.1 Advantages of Fully Differential Amplifiers
      2. 9.3.2 Fully Differential Amplifier Efficiency and Thermal Information
      3. 9.3.3 Differential Output Versus Single-Ended Output
    4. 9.4 Device Functional Modes
      1. 9.4.1 Summing Input Signals With The TPA6205A1
        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 TPA6205A1 With Differential Input
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Selecting Components
            1. 10.2.1.2.1.1 Resistors (RF and RI)
            2. 10.2.1.2.1.2 Bypass Capacitor (CBYPASS) and Start-Up Time
            3. 10.2.1.2.1.3 Input Capacitor (CI)
            4. 10.2.1.2.1.4 Decoupling Capacitor (CS)
          2. 10.2.1.2.2 Using Low-ESR Capacitors
        3. 10.2.1.3 Application Curves
      2. 10.2.2 TPA6205A1 With Differential Input and Input Capacitors
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curves
      3. 10.2.3 TPA6205A1 With Single-Ended Input
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
        3. 10.2.3.3 Application Curves
  11. 11Power Supply Recommendations
    1. 11.1 Power Supply Decoupling Capacitors
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  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

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

1 Features

  • 1.25 W Into 8-Ω From a 5-V Supply at THD = 1% (Typical)
  • Shutdown Pin has 1.8-V Compatible Thresholds
  • Low Supply Current: 1.7 mA Typical
  • Shutdown Current < 10 µA
  • Only Five External Components
    • Improved PSRR (90 dB) and Wide Supply Voltage (2.5 V to 5.5 V) for Direct Battery Operation
    • Fully Differential Design Reduces RF Rectification
    • Improved CMRR Eliminates Two Input Coupling Capacitors
    • C(BYPASS) Is Optional Due to Fully Differential Design and High PSRR
  • Available in 3-mm × 3-mm QFN Package (DRB)
  • Available in an 8-Pin PowerPAD™ MSOP (DGN)
  • Available in a 2-mm × 2-mm MicroStar Junior™ BGA Package (ZQV)

2 Applications

  • Designed for Wireless Handsets, PDAs, and Other Mobile Devices
  • Compatible With Low Power (1.8-V Logic) I/O Threshold Control Signals

3 Description

The TPA6205A1 device is a 1.25-W mono fully differential amplifier designed to drive a speaker with at least 8-Ω impedance while consuming less than 37 mm2 (ZQV package option) total printed-circuit-board (PCB) area in most applications. This device operates from 2.5 V to 5.5 V, drawing only 1.7 mA of quiescent supply current. The TPA6205A1 is available in the space-saving 2-mm × 2-mm MicroStar Junior BGA package, and the space saving 3-mm × 3-mm QFN (DRB) package.

Features like 85-dB PSRR from 90 Hz to 5 kHz, improved RF-rectification immunity, and small PCB area makes the TPA6205A1 ideal for wireless handsets. A fast start-up time of 4s with minimal pop makes the TPA6205A1 ideal for PDA applications.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPA6205A1 MSOP-PowerPAD (8) 3.00 mm × 3.00 mm
SON (8) 3.00 mm × 3.00 mm
BGA MICROSTAR JUNIOR (8) 2.00 mm × 2.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Application Circuit

SLOS490TPA6205A1 front_page_app_circ_01_slos490.gif

Example Solution Size

SLOS490TPA6205A1 front_page_app_circ_02_slos490.gif