SLOS431B March   2004  – February 2015 TPA6120A2

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Simplified Schematic
  5. 5 Revision History
  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 Current-Feedback Amplifier
      2. 9.3.2 Independent Power Supplies
    4. 9.4 Device Functional Modes
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 High Voltage, High Fidelity DAC + Headphone Amplifier Solution
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Resistor Values
          2. 10.2.1.2.2 Checking For Oscillations And Instability
          3. 10.2.1.2.3 Thermal Considerations
        3. 10.2.1.3 Application Performance Plots
      2. 10.2.2 High Fidelity Smartphone Application
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Performance Plots
  11. 11Power Supply Recommendations
    1. 11.1 Independent Power Supplies
    2. 11.2 Power Supply Decoupling
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    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)
  • RGY|14
  • DWP|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9 Detailed Description

9.1 Overview

The TPA6120A2 is a current-feedback amplifier with differential inputs and single-ended outputs.

9.2 Functional Block Diagram

blockdiag.gif

9.3 Feature Description

9.3.1 Current-Feedback Amplifier

Current feedback results in low voltage noise, low distortion, high open-loop gain throughout a large frequency range, and can be used in a similar fashion as voltage-feedback amplifiers. The low distortion of the TPA6120A2 results in a signal-to-noise ratio of 128 dB.

9.3.2 Independent Power Supplies

Because the power supplies for the two amplifiers are available separately, one amplifier can be turned off to conserve power.

See Power Supply Recommendations.

9.4 Device Functional Modes

This device operates as a wide-bandwidth, current-feedback amplifier.