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WS1105 Datasheet(PDF) 7 Page - AVAGO TECHNOLOGIES LIMITED

Part # WS1105
Description  CDMA Cell 3x3 Power Amplifier Module
PDF  15 Pages
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Manufacturer  AVAGO [AVAGO TECHNOLOGIES LIMITED]
Direct Link  http://www.avagotech.com
Logo AVAGO - AVAGO TECHNOLOGIES LIMITED

WS1105 Datasheet(HTML) 7 Page - AVAGO TECHNOLOGIES LIMITED

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Peripheral Circuit in Handset
MSMPA_R0
RF Out
Output Matching Circuit
RF In
WS1105
C3
VBATT
+2.85V
C5
C4
C1
C8
C7
C6
L1
C2
Vcc2
Vcc1
Vcont
GND
Figure 10. Peripheral circuit
Notes :
– Recommended voltage for Vref is 2.85V
– Place C1 near to Vref pin
– Place C3 and C4 close to pin 1 (Vcc1) and pin 8 (Vcc2). These capacitors can affect the RF performance
– Use 50
: transmission line between PAM and Duplexer and make it as short as possible to reduce conduction loss
–
S-type circuit topology is good to use for matching circuit between PA and Duplexer



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