SKY77148_06 Datasheet, PDF (9/14 Pages) Skyworks Solutions Inc. – SKY77148 PA Module for CDMA2000 (450-460 MHz)

PA MODULE FOR CDMA2000 (450–460 MHZ)
Evaluation Board Description
The evaluation board is a platform for testing and interfacing
design circuitry. To accommodate the interface testing of the
SKY77148, the evaluation board schematic and assembly
DATA SHEET • SKY77148
diagrams are included for preliminary analysis and design. In
Figure 9, the basic schematic of the evaluation board for the 450
MHz to 460 MHz range is shown.
A C6
220 pF
1 _VCC1
RF IN
2 _{RF IN}
GND ⁷
RF OUT ⁶
RF OUT
VREF
C1
3300 pF
VCONT
3 _VREF
B C2
1 µF
VCONT
4
VCC2 ⁵
A C5
330 pF
VCC
C3
C4
20 µF 10000 pF
A Place caps at closest proximity to PA module with the capacitor grounds directly connected to the PAM grounds.
B ^{(decoupling capacitor) is not required when a voltage regulator is present.}
Figure 9. Evaluation Board Schematic
103018_009
C6
1
U1
C2
(see note)
RF IN
C1
SKYWORKS
6x6_7_PIN
03-01-01
C5
C3
C4
RF OUT
NOTE:
C2 (decoupling capacitor) is not required
when a voltage regulator is present.
Figure 10. Evaluation Board Assembly Diagram
Prototype Test-Board
Component Description
Location
Value
C1
3300 pF
C2 (see note)
1 µF
C3
20 µF
C4
10,000 pF
C5
330 pF
C6
220 pF
103018_010
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
103018B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 12, 2006
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