SLAAED0 March   2024 TAS2764 , TAS2780 , TAS2781

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Introduction
  5. 2 Measurement Methodology
  6. 3 Introduction to Noise-gate and Pop in Class-D Amplifiers
  7. 4 Causes of Pop in TAS27xx family of Class-D Amplifiers
  8. 5 Click and Pop Using TAS27xx
  9. 6 Click and Pop Measurement Technique Using AP v6.0. 2
    1. 6.1  Measurement Setup
    2. 6.2  Filter Settings
    3. 6.3  Data Capture Settings
    4. 6.4  Auto Range Settings for Pop Measurement
    5. 6.5  ASI or I2S Configurations for Pop Measurement
    6. 6.6  APx Sound Level Meter Utility
    7. 6.7  Data Acquisition
    8. 6.8  Interpreting Click and Pop Waveforms
    9. 6.9  Post Processing of AP Waveforms
    10. 6.10 A-Weighted Click and Pop Numbers
    11. 6.11 Exporting the A-Weighted Numbers
  10. 7 Noise-Gate Pop and Measurement Technique Using APx
  11. 8 Configuring TAS2764 for Improved Click and Pop Noise Performance
    1. 8.1 Explanation
  12. 9 Summary
  13. 10References

6.7 Data Acquisition

Click the Acquire button on the utility to start recording the file. The recording runs for programmed duration as per the Project file and then stops. During this time, in parallel, turn ON and OFF the device under test to manipulate the clicks and pops scenario. The acquisition happens for the programmed Fixed Time saved in the AP project file (Example: 30 sec). Once the recording gets over, click the Analyze button. In the example given in Figure 6-11, 50 cycles of Turn On and Turn Off of the device was exercised in parallel, when the AP was doing the acquisition for a fixed duration of 30 seconds. Figure 6-12 shows the peak level getting captured during this period.