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GLOBAL tuner block except EU and China
TU3702
TDSH-G501D(B)
TUNER_ISOLATOR_DVB_1INPUT_H
NC
1
RESET
2
SCL
3
SDA
4
+B1[3.3V]
5
SIF
6
+B2[1.8V]
7
CVBS
8
IF_AGC
9
DIF[P]
10
DIF[N]
11
B1
A1
B1
A1
B2
A2
GND seperation for ASIS tuner
TUNER MULTI-OPTION
TW_FE_LNA FILTER_SETTING
TU3700-*1
Frequence
TDSS-H501F(B)
TUNER_ATSC
54MHz~350MHz
350Hz~450MHz
NC_1
1
RESET
2
450Hz~870MHz
SCL
3
SDA
4
+B1[3.3V]
5
NC_2
6
+B2[1.8]
7
NC_3
8
IF_AGC
9
DIF[P]
10
DIF[N]
11
X
A1
B1
A1
12
SHIELD
THE
SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE
SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
CTRL_1
CTRL_2
Filter_Type
1
0
LPF
0
0
Through
0
1
HPF
RF_SWITCH_CTL
Pull-up can't be applied
because of MODEL_OPT_2
TU3700
TDSS-G201D
TUNER_OPT
close to TUNER
R3732
NC_1
100
R3705
0
1
C3701
OPT
RESET
0.1uF
16V
2
SCL
3
SDA
4
+B1[3.3V]
5
NC_2
close to TUNER
6
C3702
0.1uF
16V
+B2[1.8V]
OPT
7
NC_3
8
IF_AGC
9
DIF[P]
10
DIF[N]
11
B1
A1
B1
A1
12
SHIELD
+3.3V_TU
C3723
22uF
6.3V
CHANGE TO
6.3V 2012 X5R
+3.3V_TU
R3733
100K
TUNER_RESET
C3710
0.1uF
16V
TU_IIC_ATSC_1.8K
R3735
33
R3736
33
OPT
C3711
C3713
C3742
18pF
18pF
20pF
50V
50V
50V
HALF_NIM/IF_FILTER
HALF_NIM/IF_FILTER
R3760-*1
R3761-*1
10
10
R3761
0
HALF_NIM/IF_NON_FILTER
R3760
0
HALF_NIM/IF_NON_FILTER
Close to the tuner
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
+1.8V_TU
C3737
C3738
100pF
0.1uF
50V
16V
close to the tuner pin, add,09029
R3704
100
should be guarded by ground
C3716
0.1uF
16V
+3.3V_TU
C3717
0.1uF
16V
+3.3V_Normal
Size change,0929
L3703
CIS21J121
C3725
C3715
C3727
0.1uF
22uF
0.1uF
16V
6.3V
16V
CHANGE TO
6.3V 2012 X5R
TUNER_NON_EU
LNA_CTRL_1
BR_RESET_DEMOD
FE_AGC_SPEED_CTL
FE_TS_SYNC
IF_AGC_SEL
LNA_CTRL_2
FE_BOOSTER_CTL
LNA2_CTL
FE_TS_VAL_ERR
DEMOD_SCL
FE_TS_CLK
FE_TS_DATA[0]
DEMOD_SDA
R3740-*1
1K
TU_IIC_NON_ATSC_1K
+3.3V_TU
R3741-*1
1K
TU_IIC_NON_ATSC_1K
R3740
R3741
1.8K
1.8K
TU_IIC_ATSC_1.8K
TU_SCL
TU_SDA
OPT
C3743
20pF
50V
R3758
82
TU_SIF
OPT
R3784
0
TU_CVBS
OPT
IF_P_MSTAR
IF_N_MSTAR
Signal to Signal Width = 12mils
Ground Width >= 24mils
+3.3V_TU
C3708
C3707
100pF
0.1uF
50V
16V
IF_AGC_MAIN
IC3703
+1.8V_TU
AP1117E18G-13
3
1
IN
ADJ/GND
OUT
2
R3766
1
C3740
0.1uF
CAP_10uF_X5R
16V
C3741
10uF
CHANGE TO
10V
10UF 10V X5R
85C
C3741-*1
10uF 10V
CAP_X7R_MP
NC4_S7LRM
2012.06.21
14
LGE Internal Use Only
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