SLOS358C September 2011 – April 2020 THS4531
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Packaging and Ordering Information
- 6 Electrical Specifications
- 7 Device Information
- 8 Table of Graphs
- 9 Typical Characteristics: VS = 2.7 V
- 10Typical Characteristics: VS = 5 V
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11Application Information
- 11.1 Typical Characteristics Test Circuits
- 11.2
Application Circuits
- 11.2.1 Differential Input to Differential Output Amplifier
- 11.2.2 Single-Ended Input to Differential Output Amplifier
- 11.2.3 Differential Input to Single-Ended Output Amplifier
- 11.2.4 Input Common-Mode Voltage Range
- 11.2.5 Setting the Output Common-Mode Voltage
- 11.2.6 Single-Supply Operation
- 11.2.7 Low Power Applications and the Effects of Resistor Values on Bandwidth
- 11.2.8 Driving Capacitive Loads
- 11.2.9 Audio Performance
- 11.2.10 Audio On and Off Pop Performance
- 11.3 Audio ADC Driver Performance: THS4531 AND PCM4204 Combined Performance
- 11.4 SAR ADC Performance
- 11.5 EVM and Layout Recommendations
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
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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.
Figure 82. Power Supply Turn On Pop Performance 
Figure 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.
Figure 84. PD Enable Pop Performance