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EN 32
8.
TCM3.1A LA
8.8
Diagram B04, TDA9885 (IC U2)
Block diagram
TOP
TAGC
9
14
C
TUNER AGC
VIF2
2
VIF1
1
24
SIF2
SIF1
23
SUPPLY
20
18
V
AGND
P
(1) Not connected for TDA9885.
Pinning information
2010-Jun-25
All manuals and user guides at all-guides.com
IC Data Sheets
VIF-PLL
filter
C
VAGC pos
(1)
VAGC
VPLL
16
19
C
AGC neg
BL
VIF-AGC
RC VCO
VIF-PLL
SINGLE REFERENCE QSS MIXER/
INTERCARRIER MIXER AND
AM-DEMODULATOR
OUTPUT
SIF-AGC
PORTS
C
AGC
13
3
n.c.
O
P
1
FMPLL
DEEM
DGND
SIOMAD
Figure 8-8 Internal block diagram and pin configuration
external
reference
or
REF
15
DIGITAL VCO CONTROL
TDA9885
TDA9886
MAD
2
I
C-BUS TRANSCEIVER
22
11
10
7
12
O
P
2
S
C
L
S
D
A
D
G
N
D
I S
O
M
A
D
sound intercarrier output
and MAD select
VIF1
1
24
SIF2
VIF2
2
23
SIF1
OP1
3
22
OP2
4
21
AFC
5
20
V P
AFD
6
19
VPLL
TDA9885
TDA9886
7
18
AGND
AUD
8
17
CVBS
TOP
9
16
VAGC
SDA
10
15
REF
SCL
11
14
TAGC
12
13
n.c.
crystal
4 MHz
AFC
21
AFC DETECTOR
CVBS
VIDEO TRAPS
17
4.5 to 6.5 MHz
8
AUD
AUDIO PROCESSING
DEEM
5
AND SWITCHES
de-emphasis
network
NARROW-BAND FM-PLL
6
AFD
DETECTOR
C
4
F
M
P
L
L
FM-PLL filter
(1)
video output 2 V (p-p)
[1.1 V (p-p) without trap]
AF
G_16510_059.eps
100318
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