5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
IF Interface Filter
L17=GZ1005D102CTF, L19=27nH,C5=470pF, L25=6.8nH, C8=L23=C6=NC, L22=0R
L17=270nH, L19=39nH,C5=470pF, L25=0R, C8=L23=C6=NC, L22=0R
L17=L23=L22=270nH, L19=39nH,C5=100pF, L25=6n8H, C8=C6=120pF
DTMB (S11<-8)
Application
Hybrid ( with S1 filter for EN55020)
ATV only, ATSC (S11>-8)
Bead (L21):
1k@100M &
400ohm@400M,300mA
RF---DVBT/C/T2
- R103 and R106 are related to Demod side's
IFAGC design. Sometime need to fine tune
for different Demod.
- Following IFAGC TBD table is common
suggestion.
IFAGC TBD table
Open drain R103=100R
Push Pull R103=10KR
MSTAR
方案，
AGC
采用电流型输出，
RT3
的不易过大。
其他方案，可采用参考设计要求的
10K.
C106
R103
AGC RC Filter
I2C Interface Filter
L17
L19
CT4
的选取：
1.
内置隔离器时，
CT4=0R
2.
不带内置隔离时，
CT4=470PF
Close R842
Addr 0xF6
(1) +VDD3V input voltage tolerance must be under +-5%
(2) +VDD3V input ripple must be under 30mVpp
(3) Using LDO for +VDD3V is recommended
0805C_ST
C5
L25
C6
靠近
silicon tuner
摆放
实测电流：
240mA
供电范围：
3.13~3.47V
- filter noise from demod side
75 ohm line
Tuner I2C
IF filter
kick back filter
改善
ATV
水波纹！
Recommend to reserve R106, R110, R109
to filter noise from demod side.
IF trace shielding by GND
DVB-S/S2
控制
EN
的时候，先关
22K
输入信号，再关
EN
LNB Output Enable,
高有效
LNB Output Voltage Selection
LOW:13.3V HIGH:18.3V
140mA
实测电压
3.2V
TUNER_SDA
TUNER_SCL
VAGC
IF_AGC
TU_SDA
TUNER_SCL
TUNER_SDA
VAGC
TU_SCL
TU_SDA
3.3V_TUNER
3.3V_TUNER
TU_SCL
3.3V_TUNER
VON
VOP
3.3V_TUNER
IF-IN-
IF-IN+
IF-IN+
IF-IN-
VOP
VON
RFIN
RFIN
VCC_LNBA
IF
_A
G
C
_S
TUNER_SCL
TUNER_SDA
3.3V_TUNER
3.3V_TUNER
+3.3V_Normal
+12V_Normal
+3.3V_Normal
VCC_LNBA
+3.3V_Normal
T3.3V
+3.3V_Normal
T3.3V
T3.3V
TUNER_SDA
2
TUNER_SCL
2
IF_AGC
2
DIFP
2
DIFM
2
LNB_EN
2
LNB_SEL
2
DISEQC
2
IF
A
G
C-
S
2
IM-S
2
QM-S
2
IP-S
2
QP-S
2
Title
Size
Document Number
Rev
Date:
Sheet
of
Tuner & Ext.Demod
V1.0
MSD6A538/6586
Custom
9
13
Saturday, February 25, 2017
Title
Size
Document Number
Rev
Date:
Sheet
of
Tuner & Ext.Demod
V1.0
MSD6A538/6586
Custom
9
13
Saturday, February 25, 2017
Title
Size
Document Number
Rev
Date:
Sheet
of
Tuner & Ext.Demod
V1.0
MSD6A538/6586
Custom
9
13
Saturday, February 25, 2017
C256
104
1
2
CT8
120pF
L511
220-2A-0603
LT7 GZ1005D102CTF
C181
NC
1
2
RT4
NC
R21
100R
RT2
330R
RT5
1K8
J4
3P
1
2
3
CT31
NC/56pF
TY1
27M
L28
0.5PF
RT7
NC
D4
NC/SS24
LT11
1K/330nH
R20
100R
LT1
6.8nH
CT
6
22nF
LT
4
270nH
C42
22PF
1
2
CD178
0.1uF/16V/X7R
CT10
NC/1.8pF
CT1 120pF
C265 33pF
C192
102
1
2
DT1
BAV99
C49
0.1uF/25V
CT2
68pF
TL1
10-4A-0603
CT3
68pF
C190
39pF
U1
AV2017
RFIN
2
GND
3
RFAGC
4
RFLP
5
RX
Q
P
6
RX
Q
N
7
RX
IN
9
RX
IP
10
SCL
12
SDA
13
XTAL2
14
ADDR0
11
XTAL1
15
VC
C
8
VC
C
17
CP
19
VC
C
18
RE
G
CA
P
20
VCC
1
EPAD
21
GN
D
16
C4
22PF
1
2
C282 33pF
CT28 100nF
RT9
330R
RT5047
U5
RT5047
LNB
1
BST
2
LX
3
VIN
4
TONE
8
EN
5
COMP
7
SEL
6
GN
D
9
LT
3
27nH
C191
NC
C43
22PF
1
2
+
C41
220uF/16V
1
2
CT23
100nF
CT27
NC/20pF/50V/NPO
C1
22pF
C3
0.1uF
R9
NC/4.7K
LT5
GZ1005D102CTF
C6
22PF
1
2
CT32
NC/56pF
C11
104
1
2
C197
0.1uF/25V
RT6
0R
C2
22pF
R11
100R
+
C48
100uF/25V
1
2
CT22
6n8F
C178
12PF
1
2
L10
10uH/1.5A
LT6
270nH
UD16
R842
RF_bias
2
TF1
3
TF2
4
DECT1
5
SCL
6
SD
A
7
AVD
D
8
AVDD
18
VOP
17
VON
16
VAGC
15
DV
S
S
10
CP
9
RFIN
1
AVD
D
24
TFH
23
TFL
22
21
NC
DE
T2
20
DE
T3
19
GND
25
DV
DD
11
X
T
A
L_I
12
VAGC2
14
XTAL_O
13
CT9 1nF
C195
1nF/50V/X7R
CT20
100nF
CT18
100nF
C50
0.1uF/25V
CT33
10uF
C44
105
1
2
R183
1K
C1089
0.1uF/16V/X7R
LT2
270nH
D2
SS24
CT4
470PF
+
EC1027
220uF/16V
LT10
1K/330nH
CT24 100nF
CT29
47pF/NC
D3
NC/SS24
C194
1uF/6.3V/X5R
C260
104
1
2
RT3
100R
CT19 47nF
R10
10K
+
C18
10uF
C193
0.1uF/16V/X7R
CT21
330pF
SRQ1
FOR tuner
1
1
LT8
180nH
C257
104
1
2
CT
7
22nF
C1090
10uF/6.3V/X5R/0603
CT34
1uF
CT30
47pF/NC
J1
1
2
3
4
5
XT1
24MHz,CL=11pF
1
2
L29
3.9nH
SRQ4
FOR tuner
1
1
RT8
0R
C258
104
1
2
CT
5
100nF
CT25
10uF
CT26
NC/20pF/50V/NPO
CD177
0.1uF/16V/X7R
TC1
100nF
J5
RFIN
1
2
3
4
5
6
7
8
9
10
L30
NC
CT35
10uF
