Rf Block Diagram - LG CU405 Service Manual

3. TECHNICAL BRIEF

3.3 RF Block Diagram

FRONT
UMTS RF
END
GSM RF
MODULE
SP8T
GSM
QUAD PA
BLUETOOTH RF
-LB_LNA_IN
-HB_LNA_IN
TX SAW
Coupler
FILTER
WCDMA
Dual PA
-LB_RF_OUT2
TX SAW
Coupler
-HB_RF_OUT1
FILTER
-PWD_DET_IN
-GCELL_INP
-GCELL_INN
-EGSM_INP
-EGSM_INN
-DCS_INP
-DCS_INN
-GPCS_INP
-GPCS_INN
TX SAW
GCELL/EGSM
-LB_RF_OUT1
FILTER
-HB_RF_OUT2
DCS/PCS
RFR6275
PLL
Loop
RX SAW RX SAW
PM6650
filter
FILTER FILTER
VCTCXO
19.2MHz
VCONTROL-
PLL2 PLL1
RTR6275
DAC_REF -
BLUETOOTH RF MODULE
TCXO
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA
- 16 -
RX_IQ - - RX_IQ
SSBI -
- SSBDT_RFR
SBDT - -PM_SBDT
-TCXO
-TCXO_EN
-TRK_LO_ADJ
MSM6280
-TX_AGC_ADJ
SBDT - -SSBDT_RTR
RF_ON -
-TX_ON
RX_IQ -
TX_IQ - -TX_IQ
-DAC_REF
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA