User's Manual

UMTS/HSDPA Module Series
UC15 Hardware Design
UC15_Hardware_Design Confidential / Released 44 / 78
Figure 24: Reference Design for AOUT2
Module
SPK2P
AGND
Differential layout
Amplifier circuit
10pF
0603
Close to speaker
GND
C2
C1
33pF
0603
33pF
0603
GND
10pF
0603
Figure 25: Reference Design with an Amplifier for AOUT2
The value of C1 and C2 depends on the input impedance of audio amplifier.
NOTE