SLOS700C January   2011  – April 2016 TPA6139A2

UNLESS OTHERWISE NOTED, this document contains 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 Programmable Gain Settings
    7. 7.7 Typical Characteristics, Line Driver
  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 DirectPath Headphone Driver
    4. 9.4 Device Functional Modes
      1. 9.4.1 Internal Undervoltage Detection
      2. 9.4.2 Pop-Free Power Up
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Capacitive Load
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Component Selection
          1. 10.2.2.1.1 Charge Pump
          2. 10.2.2.1.2 Decoupling Capacitors
          3. 10.2.2.1.3 Gain Setting
          4. 10.2.2.1.4 Input-Blocking Capacitors
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
    2. 13.2 Documentation Support
    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

1 Features

  • DirectPath™
    • Eliminates Pops and Clicks
    • Eliminates Output DC-Blocking Capacitors
    • 3-V to 3.6-V Supply Voltage
  • Low Noise and THD
    • SNR > 105 dB at –1x Gain
    • Typical Vn < 15 μVms 20 to 20 kHz at –1x Gain
    • THD+N < 0.003% at 10-kΩ Load and –1x Gain
  • 25 mW into 32-Ω Load
  • 2-Vrms Output Voltage into 600-Ω Load
  • Single-Ended Input and Output
  • Programmable Gain Select Reduces Component Count
    • 13x Gain Values
  • Active Mute With More Than 80-dB Attenuation
  • Short-Circuit and Thermal Protection
  • ±8-kV HBM ESD Protected Outputs

2 Applications

  • PDP and LCD TVs
  • Blu-ray Discs™, DVD Players
  • Mini and Micro Combo Systems
  • Soundcards

Functional Block Diagram

TPA6139A2 app_sch_los700.gif

3 Description

The TPA6139A2 is a 25-mW, pop-free stereo headphone driver designed to reduce component count, board space and cost. It is ideal for single-supply electronics where size and cost are critical design parameters.

The TPA6139A2 device does not require a power supply greater than 3.3 V to generate its 25 mW, nor does it require a split rail power supply.

The TPA6139A2 device was designed using TI's patented DirectPath™ technology, which integrates a charge pump to generate a negative supply rail that provides a clean, pop-free ground biased output. The TPA6139A2 is capable of driving 25 mW into a 32-Ω load and 2 Vrms into a 600-Ω load. DirectPath also allows the removal of the costly output DC-blocking capacitors.

The device has fixed gain single-ended inputs with a gain select pin. Using a single resistor on this pin, the designer can choose from 13 internal programmable gain settings to match the line driver with the CODEC output level. It also reduces the component count and board space.

Headphone outputs have ±8-kV HBM ESD protection enabling a simple ESD protection circuit. The TPA6139A2 has built-in active mute control with more that 80-dB attenuation for pop-free mute ON and OFF control.

The TPA6139A2 device is available in a 14-pin TSSOP and a 16-pin QFN. For a pin-compatible, 2-Vrms line driver see DRV612.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPA6139A2 TSSOP (14) 5.00 mm × 4.40 mm
VQFN (16) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Revision History

Changes from A Revision (May 2011) to C Revision

  • Added 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 section.Go
  • Removed Ordering Information table Go
  • Changed 600-Ω Load value to 32-Ω Load in Features Go
  • Changed 5-kΩ Load value to 600-Ω Load in FeaturesGo
  • Changed 2 Vms to 2 Vrms in Description Go
  • Added RL valuse for the MIN and MAX columns and changed the TYP value from 5 to 32 in the Recommended Operating ConditionsGo
  • Changed Line Driver Amplifiers subsection title to DirectPath Headphone Driver Go

Changes from * Revision (January 2011) to A Revision

  • Changed "2.5-mW" to "25-mW" in Title line and added revision A - May 2011 pub date to Header infomationGo
  • Changed conditions statement from "RIN = 10 kΩ, Rfb = 20 kΩ" to "Step = –2V/V" for TYP CHARA, LINE DRIVER sectionGo