2.12.1 Capless Speaker Output

The capless speaker audio output setting is generally used in the following application:

To drive a headphone/earphone with internal CODEC
To save the cost of DC block capacitor in audio output path

The following figure illustrates the capless output circuit connection with a phone jack.

Where:

AOHPR – Right channel analog headphone output
AOHPL – Left channel analog headphone output
AOHPM – Headphone common mode output/sense input

Figure 2-9. IS2083 Analog Audio Output Capless Connection with a Stereo Phone Jack

To configure the audio for Capless Speaker Output, perform the following steps on the CODEC Setup page.

Set the Speaker Output function as Capless Speaker Output.
Set the CODEC Type as Internal.
The following figure illustrates the GUI tool configuration for capless speaker output on the CODEC Setup page.
Figure 2-10. Capless Speaker Output Setting in CODEC Setup Page of IS2083 GUI Tool

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