Loop Filter - Samsung SGH-X600 Service Manual

5 . S G H - X 6 0 0 B l o c k D i a g r a m s
1. RF Solution Bloc k Diagr am
HITACHI METAL ANT S/W
Vc_EGSM
EGSM_MODE_SW
Inverter circuits
DCS_MODE_SW
VCC_RX_TX
Micro Devices Tripleband PAM
EPCOS EGSM RX SAW Filter
EPCOS DCS RX SAW Filter
Vc_DCS
Vcc_RF_LO
Vcc_RF_VCO
Discrete
3 rd Order

Loop Filter

OFFSET Mixer input power
Vcc_Tx_BURST
~
~
GSM S/W
DCS S/W
SEMCO TX VCO
GSM
VAPC
DCS/PCS
VBAT
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QUAD
VREG DIV
~
FracN
DIV
GSM/DCS
PFD
CP
FESW1
FESW2
DIV
QUAD
fTXIF
60/114MHz
CP
PFD
Philips Transceiver
UAA3536
VCC_SYN (2.7V , 100mA )
RF1_VDD
VCC_RX_TX (2.7V ,100mA )
RF2_VDD
PMU
VCC_RF_VCO (2.70V , 100mA )
RF1_VDDS
VCC_TX_BURST(2.7V , 100mA )
RF2_VDDS
VCC_CP (4.0V , 25mA )
HVS
5- 1
Pins IA,IB,QA and QB
+ I OUT
-
I OUT
100 kHz+fmod
+
Q OUT
-
Q OUT
Vcc_SYN
VREG
Vcc_REF(2.4V typ.)
f compRF =26MHz
REFIN
26MHz
I+
1:1/
2
fmod
I-
3
DATA
W
BUS
CLK
Q+ CTL
EN
REG
Q-
RXON
PW
TXON
R
EN SYNON
FESWON
VBat (3.6V typ 3.0V min)
PON_TX
PON_SYNT
V_MODE
AVDD (1.35V min 2.65V max , 100mA )
VDD1 (1.35V min 2.95Vmax , 150mA )
VDD2 (1.35V min 3.45V max , 150mA )
VDD3 (1.35V min 3.45V max , 100mA )
VDD4 (1.35V min 3.45V max , 150mA )
VTCXO