Block Diagrams
4-4
4-2-2 RF Receive Part
VP40578
(U406)
EGSM RX
925~960 MHz
(CH62 :
947.4 MHz)
DCS RX
1805~1880 MHz
(CH698 :
1842.4 MHz)
SA
W
Filter
(F101)
SA
W
Filter
(F100)
LNA
LNA
PGA
PGA
ADC
ADC
VCTCXO
(U102)
Antenna
S/W
(U107)
RF
Conector
(CN1)
Si4200 (U104)
RF
PLL
Si4133-T (U103)
Mix
e
r
Channel
Filter
PGA
PGA
DA
C
DA
C
100
kHz
I/O
Si4201 (U105)
I
Q
<EGSM>
1849.8 ~ 1919.8 MHz
<DCS>
1804.9 ~ 1879.9 MHz
GSM :
/2
2
1
8
10
1
1
1
3,4
3,4
17,18
21,22
1,2
1,2
11,12
11,12
5
4
3
2
S
D
ATA
SCLK
SENB
AFC
1
3
7
7
23,24
12,13
PDNB
31
9
14
- 50dBm
@ 947.067 MHz
- 50dBm
@ 1842.467 MHz
-51dBm
-52dBm
-6dBm
@ 1895.6 MHz (G)
-9dBm
@ 1842.3 MHz (D)
-52dBm
-52dBm
-50dBm (G)
-54dBm (D)
@ 67 kHz
1
2
3
4
Содержание SGH-T408
Страница 2: ...Samsung Electronics Co Ltd Printed in Korea 01 2003 Rev 1 0 GH68 03159A ELECTRONICS ...
Страница 11: ...2 1 PCB Diagrams 2 PCB Diagrams 2 1 Main Top ...
Страница 12: ...2 2 PCB Diagrams 2 2 Main Bottom ...
Страница 22: ...4 Block Diagrams 4 1 Main Baseband 4 1 Block Diagrams ...
Страница 38: ...5 13 5 8 Receiver Part Flow Chart of Troubleshooting and Circuit Diagrams ...
Страница 39: ...5 14 Flow Chart of Troubleshooting and Circuit Diagrams ...
Страница 43: ...5 18 Flow Chart of Troubleshooting and Circuit Diagrams 5 12 GSM Receiver ...
Страница 44: ...Flow Chart of Troubleshooting and Circuit Diagrams 5 19 5 13 GSM Transmitter ...
Страница 45: ...5 20 Flow Chart of Troubleshooting and Circuit Diagrams 5 14 DCS Receiver ...
Страница 46: ...Flow Chart of Troubleshooting and Circuit Diagrams 5 21 5 15 DCS Transmitter ...
