Rf Block Diagram - LG CU400 Service Manual

3. TECHNICAL BRIEF

3.3 RF Block Diagram

FRONT UMTS RF
END
GSM RF
MODULE
SP8T
GSM
QUAD PA
BLUETOOTH RF
LGE Internal Use Only
-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
- 16 -
RFR6275
PLL
RX_IQ -
SSBI -
SBDT -
Loop
RX SAW RX SAW
PM6650
filter
FILTER FILTER
VCTCXO
19.2MHz
VCONTROL-
PLL2 PLL1
SBDT -
RF_ON -
RX_IQ -
TX_IQ -
RTR6275
DAC_REF -
BLUETOOTH RF MODULE
TCXO
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA
Copyright © 2007 LG Electronics. Inc. All right reserved.
- RX_IQ
- SSBDT_RFR
-PM_SBDT
-TCXO
-TCXO_EN
-TRK_LO_ADJ
MSM6280
-TX_AGC_ADJ
-SSBDT_RTR
-TX_ON
-TX_IQ
-DAC_REF
BT_SBST/CK/DT
BT_RX_TX_N
BT_DATA
Only for training and service purposes