SLOS358C September   2011  – April 2020 THS4531

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
    1. 2.1 1 kHz FFT Plot on Audio Analyzer
  3. 3 Description
  4. 4 Revision History
  5. 5 Packaging and Ordering Information
  6. 6 Electrical Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Thermal Information
    3. 6.3 Electrical Characteristics: VS = 2.7 V
    4. 6.4 Electrical Characteristics: VS = 5 V
  7. 7 Device Information
    1. 7.1 PIN Configurations
      1. Table 2. PIN Functions
  8. 8 Table of Graphs
  9. 9 Typical Characteristics: VS = 2.7 V
  10. 10Typical Characteristics: VS = 5 V
  11. 11Application Information
    1. 11.1 Typical Characteristics Test Circuits
      1. 11.1.1 Frequency Response and Output Impedance
      2. 11.1.2 Distortion
      3. 11.1.3 Slew Rate, Transient Response, Settling Time, Overdrive, Output Voltage, and Turn-On and Turn-Off Time
      4. 11.1.4 Common-Mode and Power Supply Rejection
      5. 11.1.5 VOCM Input
      6. 11.1.6 Balance Error
    2. 11.2 Application Circuits
      1. 11.2.1  Differential Input to Differential Output Amplifier
      2. 11.2.2  Single-Ended Input to Differential Output Amplifier
      3. 11.2.3  Differential Input to Single-Ended Output Amplifier
      4. 11.2.4  Input Common-Mode Voltage Range
      5. 11.2.5  Setting the Output Common-Mode Voltage
      6. 11.2.6  Single-Supply Operation
      7. 11.2.7  Low Power Applications and the Effects of Resistor Values on Bandwidth
      8. 11.2.8  Driving Capacitive Loads
      9. 11.2.9  Audio Performance
      10. 11.2.10 Audio On and Off Pop Performance
    3. 11.3 Audio ADC Driver Performance: THS4531 AND PCM4204 Combined Performance
    4. 11.4 SAR ADC Performance
      1. 11.4.1 THS4531 and ADS8321 Combined Performance
      2. 11.4.2 THS4531 and ADS7945 Combined Performance
    5. 11.5 EVM and Layout Recommendations
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Documentation Support
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

11.2.10 Audio On and Off Pop Performance

The THS4531 is tested to show on and off pop performance by connecting a speaker between the differential outputs and switching on and off the power supply, and also by using the power down function of the THS4531. Testing was done with and without tones. During these tests no audible pop could be heard.

With no input tone, Figure 82 shows the voltage waveforms when switching power on to the THS4531 and Figure 83 shows voltage waveforms when turning power off. The transients during power on and off show no audible pop should be heard.

THS4531 G072_Power_Supply_Turn_On Pop_Performance.pngFigure 82. Power Supply Turn On Pop Performance
THS4531 G073_Power_Supply_Turn_Off_Pop_Performance.pngFigure 83. Power Supply Turn Off Pop Performance

With no input tone, Figure 84 shows the voltage waveforms using the PD pin to enable and disable the THS4531. The transients during power on and off show no audible pop should be heard.

THS4531 G074_PD_Enable_Pop_Performance.pngFigure 84. PD Enable Pop Performance