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tdh
AFC
V
P
22 kΩ
QSS
output
tuner
AGC
10 nF
4.5/5.5
MHz
100 nF
22 kΩ
560 Ω
SIF
input
video
output
1:1
VIF/DVB
input switch
1
2
5
4
5.6
kΩ
(3)
24
L
50
Ω
DVBOUT
AF
mute
10
nF
2.2 µF
2.2 µF
C7
GND
27
3
VIF
AGC
C
330 Ω
ref
32
31
2
30
29
4
28
5
26
7
25
23
10
22
11
21
12
20
19
14
18
17
16
TDA9819
1
3
6
8
9
13
15
VIF
input A
TOP
1:1
100
nF
2.2 µF
22
C
330
Ω
BL
22
kΩ
1
2
5
4
kΩ
DVB
DVB
SIF
AGC
AGC
AGC
external
adjust
220
nF
50
Ω
loop
filter
V
P
VCO
(1)
control
3
R
CVBS
x
standard
switch
VCO
adjust
22 µF
DVB
input B
C
V
AFOUT
AF
P
1:1
10 µF
75 Ω
2.2
kΩ
1
2
5
4
AF
de-emphasis
(2)
C
50
Ω
D
BC547
3
CVBS
MBH353
220 Ω
(1) See note 20 in Chapter “Characteristics”.
(2) CD = 22 nF for 50 µs de-emphasis; CD = 33 nF for 75 µs de-emphasis.
(3) See Table 3.
Fig.12 Test circuit.
NXP [ NXP ]
