DSB75 Development Support Board Rev. B1 Hardware Description
Confidential / Released
DSB75_hd_v12
Page 61 of 96
2008-08-26
AUDIO
GND
100R
R750
R751
100R
GND
GND
5V0_I
C
752
100µF
C
753
100µF
GND
C
751
100N
C
750
100N
5V0
Figure 35: Schematic for audio supply (5V0_I)
3V3_4V5
GND
GND
1K
R4
15
2K
7
R
410
GND
12
10K
R409
X410
12
VIN
4
VOUT
N410
LP3856-ADJ
ADJ
5
3
GND
1
SD
2
X411
12
C41
1
1N
1K
R41
1
R4
14
1K
9410µF
C412,414,415
5V0
X405
GND
Figure 36: Schematic for GSM module supply (3V3_4V5 or BATT+)