SLOS358C September 2011 – April 2020 THS4531
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.
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.