Block Diagrams - Samsung SGH-U800 Service Manual

8. Block Diagrams

SGH-U800 RF Block Diagram
HB_RF_OUT2
HB_RF_OUT3
HB_RF_OUT1
LB_RF_OUT1
LB_RF_OUT2
RF_ON
DAC_IRE
F
SBDT
TX_BIA
GCELL_IN
GCELL_IN
EGSM_INP
EGSM_INN
DCS_INP
DCS_INN
PCS_INP
PCS_INN
WPRXHBP
WPRXHBN
WPRXLBP
WPRXLBN
WPRXSE2_IN
WPRXSE1_IN
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BPF
Quadrature
Upconverter
BPF
BPF
Quadrature
Upconverter
BPF
Gain Ctl &
Bias
LO Generation &
Circuits
Distribution
Quadrature Correction
Downconverter
Correction
Quadrature
Downconverter
Quadrature
Downconverter
Quadrature
Downconverter
Quadrature
Downconverter
To SSBI
LO GEN
LPF
& Dist
PLL 2
8-1
TX_IP
LPF
TX_IN
TX_QP
LPF
TX_QN
TCX TCX
O O
PLL 1
VTUNE
2
LPF
PRX_IP
LPF & DO
PRX_IN
PRX_QP
LPF & DO
PRX_QN
Power
PWD_DET_IN
Detector
ground
TCXO
slug