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5. SGH-E700 Block Diagrams
5-
1
1. RF Solution Block Diagram
DIV
PFD
1:6
5
1:1/
2
QUAD
Balun
Balun
REFIN
VCTCXO
13 MHz
1:1/2
1:1/2
I+
I-
Q+
Q-
~
~
pi -PAD
Antenna
swich
control
circuits
EGSM_MODE_SW
VCC_RX_TX
Vc_EGSM
GSM
DCS
DCS_MODE_SW
Vc_DCS
EPCOS EGSM RX SAW Filter
B7820(2X1.4)
IL=2.7dB typ 3.2dB max
Ripple=0.9dB typ 1.6dB max
SAWTEK DCS RX SAW Filter
856079 (2X2.5)
IL=3.0dB typ 3.5dB max
Ripple=1.1dB typ 1.6dB max
Vcc_RFVCO
? ? ? ? Dualband RF VCO
VOL1861N27KRB(8.0X6.0)
Freq = 1801MHz(Vt=0.6V )
to 1921MHz(Vt=2.3V )
Pout = -3 dBm to +3dBm , Ic = 8mA
kV = 90 MHz/V Typ
Discrete
3rd Order
Loop Filter
Murata TX VCO
MQW291A
GSM
= 880 MHz(Vt=0.5V )
to 915 MHz(Vt=2.3V )
Pout = 7 dBm typ. , Ic = 35mA
kV = 32 MHz/V Typ
DCS
= 1710 MHz(Vt=0.5V )
to 1785 MHz(Vt=2.3V )
Pout = 10 dBm typ. , Ic = 50mA
kV = 70 MHz/V Typ
Harmonics = 10dBc(up to 3rd )
MICRO DEVICE QUADBAND PAM
RF3140(10X10)
GSM: Pout = +36.0 dBm Eff = 45%
DCS: Pout= + 34.5 dBm Eff = 40%
Discrete
3rd Order
Loop Filter
IFVCO
PFD
PMU
VDD1
(1.35V min 2.95Vmax , 150mA )
VBAT
(3.6V typ 3.0V min)
RF1_VDD
RF2_VDD
RF1_VDDS
RF2_VDDS
HVS
VDD2
(1.35V min 3.45V max , 150mA )
VDD3
(1.35V min 3.45V max , 100mA )
VDD4
(1.35V min 3.45V max , 150mA )
AVDD
(1.35V min 2.65V max , 100mA )
VCC_RX_TX (2.7V ,100mA )
VCC_SYN(2.7V , 100mA )
VCC_RF_VCO(2.7V , 100mA )
VCC_CP(4.0V , 25mA )
VCC_TX_BURST(2.7V , 100mA )
Tank
GSM Tx: 45.5MHz
DCS Tx: 91 MHz
1
2
1
2
Tank Circuit
Discrete
3rd Order
Loop Filter
Vcc_Tx_Burst
NTK Antenna Switch
LMG002S-5047A
Ipeak = 10 mA
Freq (MHz )
Loss
880 - 915 1.3 dB
925 - 960 1.1 dB
1710 -1785 1.5 dB
1805 -1880 1.4 dB
Atten 2xfo : 30dB
3xfo : 25dB (GSM,DCS)
DCS
RFLOin=-2dBm max,
-8dBm min
OFFSET Mixer in=
-17dBm max, -23dBm min
pi -PAD
fpd=200kHz
fpd=13MHz
fpd=91MHz
Philips Transceiver
OM5178HN
Pins IA,IB,QA and QB
CM : 1.25V typ. , 1.15Vmin, 1.35Vmax
0.5Vpp
Antenna
RF_BBI_DATA
RF_BBI_CLK
RF_EN_SYNT
3 WIRE BUS
CTL REG
PON_TX
PON_RX
PON_SYNT
POWER
ENABLE
VCC_SYN
VCC_CP
VCC_RX_TX
1 : 7
PFD
CP
CP
+I OUT
-I OUT
+Q OUT
-Q OUT
fmod
PON_TX
PON_SYNT
V_MODE
GSM
GSM
DCS
VAPC
VBAT