Smart Module Series
SA800U-WF_EVB_User_Guide 39 / 63
4.8.1. Loudspeaker Interface
SA800U-WF EVB provides one loudspeaker interface U0445. The following figure shows a reference
circuit design for loudspeaker interface.
SPK_P
SPK_N
100 pF
100 pF
U0445
33 pF
C1
C2
C3
U0427
Figure 30: Reference Design for Loudspeaker Interface
U0445
Figure 31: SPK
U0403
Earphone
J0433
Audio jack for headset
U0424
MEMS-type microphone
U0428
U0435
U0436