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5. Block Diagrams
5-1. RF Solution Block Diagram
FEM
Antenna
ESHS - M080SC
ANT
FESW 1
FESW 2
FESW1
TX(GSM850)
H
TX(DCS1800/PCS1900)
L
RX(GSM850)
L
RX(DCS1800)
L
RX(PCS1900)
L
GSM
850 OUT
DCS /
PCS OUT
GSM 850 RX
PCS RX
DCS RX
GSM 850 TX
DCS /PCS TX
FESW2
L
H
L
L
L
GSM TX SAW Filter
FAR-F5EA-836M50-D27A
(2X1.5)
IL=2.5dB typ 3.0dB max
Ripple =1.1dB typ 1.8B max
GSM 850 IN
PA
Power
VBAT
Controller
RAMP
PA
DCS /PCS IN
TQM7M5004 TRI-BAND PAM
(GSM/EDGE)
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Philips Transceiver
UAA 3587EHN/C2
QUA
D
DI
VRE
V
G
Frac
N
DIV
PF
C
D
P
DIV
QUAD
Balun
Balun
+VCC_SYN _2.8V
+VDD_RX_TX _ 2.8V
PMU
+VDD_IO_lOW_ 1.9V
5-1
Pins IA,IB,QA and QB
CM : 1.25V typ. , 1.15Vmin, 1.35Vmax
0.5Vpp
RX_TX_IP
100kHz+fmod
RX_TX_IN
+VDD_RX _TX_2.8V
RX_TX_QP
RX_TX_QN
VDD _IO_LOW_1.9V
VRE
VCC _SYN_2.8V
G
26
MHz
VCTCXO
26 MHz
REFIN
1:1/
2
CLK OUT
DIV
PON _SW
FESW 1
FESW 2
FESW 3
RF_DATA
3W
RF_CLK
BUS
CTL
RF_EN
PWR
PON _3587_SYNTH
EN
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