STA381BW Datasheet, PDF (164/171 Pages) STMicroelectronics – Sound Terminal® 2.1-channel high-efficiency digital audio system

Applications
8
Applications
STA381BW
8.1
Application schemes
The following figures illustrate typical application schemes for the STA381BW. The
line/headphone out can be fed either with an external analog source (Figure 44), or with the
F3X output, allowing to have the audio content coming from the digital interface on both the
power output and on the line/headphone out (Figure 45). Regardless of the LINEINx pins
input, the F3Xx outputs can be connected to an external amplifier as an auxiliary analog
output (Figure 46). The F3X audio content is provided by the device digital audio interface.
Figure 44. External audio source to line/headphone out application scheme
Note:
For further information, please refer to application note AN3959, 2.0-channel demonstration
board based on the STA381BW and STA381BWS.
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