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5. Block Diagrams
5-1
5-1. RF Solution Block Diagram
REFIN
VCTCXO
PMU
+VDD_RX_TX _2.8V
+VCC_SYN _2.8V
+VDD_IO_lOW_ 1.9V
Philips Transceiver
UAA 3587EHN/C2
Antenna
GSM850 IN
PON_3587_SYNTH
RX_TX_IP
RX_TX_IN
RX_TX_QP
RX_TX_QN
QUA
D
VRE
G
DI
V
Frac
N
DIV
C
P
PF
D
VRE
G
26
MHz
DIV
QUAD
Fr
o
n
t
en
d
sw
it
ch
e
s
3W
BUS
CTL
PWR
EN
fmod
Pins IA,IB,QA and QB
CM : 1.25V typ. , 1.15Vmin, 1.35Vmax
0.5Vpp
RF_DATA
RF_CLK
RF_EN
+VDD_RX_TX_2.8V
VDD_IO_LOW_1.9V
26 MHz
VCC_SYN_2.8V
CLK OUT
FESW1
PON_SW
FESW2
FESW3
Balun
Balun
DCS/PCS IN
GSM
850 OUT
DCS/
PCS OUT
GSM850 TX
DCS/PCS TX
GSM850 RX
PCS RX
DCS RX
ANT
FESW1
FESW2
TQM7M5004 TRI-BAND PAM
(GSM/EDGE)
VBAT
RAMP
1:1/
2
DIV
PA
PA
Power
Controller
GSM TX SAW Filter
FAR-F5EA-836M50-D27A
(2X1.5)
IL=2.5dB typ 3.0dB max
Ripple=1.1dB typ 1.8B max
FEM
ESHS - M080SC
L
L
RX(PCS1900)
L
L
RX(DCS1800)
L
L
RX(GSM850)
H
L
TX(DCS1800/PCS1900)
L
H
TX(GSM850)
FESW2
FESW1