SLOS275E January   2000  – November 2016 TPA0211

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 - 3 V
    6. 7.6 Electrical Characteristics - 5 V
    7. 7.7 Dissipation Ratings
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Set-Up for Graphs
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Bridged-Tied Load Versus Single-Ended Mode
      2. 9.3.2 Single-Ended Operation
      3. 9.3.3 BTL Amplifier Efficiency
      4. 9.3.4 Gain Setting Via Input Resistance
      5. 9.3.5 Crest Factor
    4. 9.4 Device Functional Modes
      1. 9.4.1 Shutdown Mode
      2. 9.4.2 SE/BTL (Stereo/Mono) Operation
  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 Surface Mount Capacitor
        2. 10.2.2.2 Input Capacitor, Ci
        3. 10.2.2.3 Power Supply Decoupling, C(S)
        4. 10.2.2.4 Midrail Bypass Capacitor, C(BYP)
        5. 10.2.2.5 Output Coupling Capacitor, C(C)
      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. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    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

Refer to the PDF data sheet for device specific package drawings

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

12 Layout

12.1 Layout Guidelines

12.1.1 Component Placement

Keeping the external components very close to the TPA0211 to limit noise pickup is very important to limit noise pickup. Placing the decoupling capacitors as close as possible to the device is important for the performance of the class-AB amplifier.

12.2 Layout Example

TPA0211 Layout.gif Figure 28. Layout Recommendation

12.3 Thermal Considerations

The maximum ambient temperature depends on the heat sinking ability of the PCB system. The derating factor for the DGN package is shown in the Dissipation Ratings. Converting this θJA can be done with Equation 14.

Equation 14. TPA0211 Equation_14_SLOS275.gif

To calculate maximum ambient temperatures, first consider that the numbers from the dissipation graphs are per channel so the dissipated power needs to be doubled for two channel operation. Given RθJA, the maximum allowable junction temperature, and the total internal dissipation, the maximum ambient temperature can be calculated with Equation 15. The maximum recommended junction temperature for the TPA0211 is 150°C.

Equation 15. TPA0211 Equation_15_SLOS275.gif

NOTE

Internal dissipation of 0.8 W is estimated for a 2-W system with 15-dB crest factor per channel.

Table 3 shows that for some applications no airflow is required to keep junction temperatures in the specified range. The TPA0211 is designed with thermal protection that turns the device off when the junction temperature surpasses 150°C to prevent damage to the IC. Table 3 was calculated for maximum listening volume without distortion. When the output level is reduced the numbers in the table change significantly. Also, using 8-Ω speakers dramatically increases the thermal performance by increasing amplifier efficiency.