Rf Block Diagram - LG -L25 Service Manual

[L25] RF Block Diagram

3. RF Block Diagram

ANT1
L14_2.75V
GSM QUAD
CDMA BC0/BC6
WCDMA B1/5
LTE B1/3/26
CPL
FEM
ANT2
B11
DPX
CPL
ANT3
B1(BC6)/B11 DRX
L14_2.75V
GNSS
SP2T
DIP
&
ANT4
LNA
B3/B26
(BC0) DRX
DPX
LGE Internal Use Only
VPWR
L10_1.8V
VPWR
VPA
L10_1.8V
APT
DCDC
GSM_LB
GSM_HB
B1/BC6
DPX
MMPA
B3
DPX
B26(5)
DPX
VPA
VPWR
PAM PAM
L10_1.8V
GSM_LB
TX_LB2_OUT
GSM_HB
TX_MB2_OUT
B1, B3, BC6
TX_MB3_OUT
B26(5),BC0
TX_LB4_OUT
SAW
WTR1625L
B1, BC6
PRX_HMB4_IN
B3
PRX_MB1_IN
B26(5),BC0,GSM850
PRX LB1 IN _ _
GSM LB
PRX_LB2_IN
SAW
GSM_HB
Dual
PRX_MB2_IN
SAW
L10_1.8V
B11 B11
TX_MB1_OUT
SAW
B11
PRX_MB3_IN
SAW
WTR0_PDET_IN
PDET_RFFB
B1, BC6
DRX_HMB4_IN DRX HMB4 IN
SAW SAW
B11
DRX_MB3_IN
SAW
GNSS_RF_INP
GNSS_RF_INN
B3 B3
DRX_MB1_IN
SAW
B26(5),BC0
DRX_LB2_IN
SAW
- 103 - Copyright © 2014 LG Electronics. Inc. All right reserved.
5. BLOCK DIAGRAM
WTR0_TXBB_IQ
TX_BB_
WTR0_PRXBB_IQ
PRX_BB_
WTR0 DRXBB IQ WTR0_DRXBB_IQ
DRX_BB_
WTR0_GNSSBB_IQ
GNSS_BB_
MSM8926-3
WTR0_DAC_IREF
DAC_REF
WTR0_GPDATA_0
GP_DATA0
WTR0 GPDATA 1 WTR0_GPDATA_1
GP_DATA1
WTR0_SSBI_TX_GNSS
SSBI_TX_GNSS
WTR0_SSBI_PRX_DRX
SSBI_PRX_DRX
L10_1.8V
VDD_DIO
L9_+2.05V
VDD_RF2_
PM8926 PM8926
L1_+1.225V L1 +1 225V
VDD_RF1_
WTR0_XO_IN
XO_IN
Only for training and service purposes