Ic Data Sheets - Philips 32PF9968/10 Service Manual

EN 36 8. LC9.1A LA

8. IC Data Sheets

This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
8.1 Diagram B02, Type TDA9886T (IC7113), Demodulator
Block Diagram
TOP TAGC
9 14 16
C
AGC neg
TUNER AGC VIF-AGC
VIF2 2
1
VIF1
24
SIF2
23
SIF1
SUPPLY
20 18 13
V AGND n.c.
P
(1) Not connected for TDA9885.
Pin Configuration
2009-Apr-10
IC Data Sheets
VIF-PLL
filter
C
VAGC pos
(1)
VAGC VPLL
19
C
BL
RC VCO
VIF-PLL
SINGLE REFERENCE QSS MIXER/
INTERCARRIER MIXER AND
AM-DEMODULATOR
OUTPUT
SIF-AGC 2
I C-BUS TRANSCEIVER
PORTS
C
AGC
3 22
O P 1 O P 2
VIF1 1
VIF2 2
OP1 3
FMPLL 4
DEEM 5
AFD 6
DGND 7
AUD 8
TOP 9
SDA 10
SCL 11
SIOMAD 12
Figure 8-1 Internal block diagram and pin configuration
external
reference
crystal
4 MHz
or
REF
15
DIGITAL VCO CONTROL AFC DETECTOR
VIDEO TRAPS
4.5 to 6.5 MHz
TDA9885
TDA9886
MAD
NARROW-BAND FM-PLL
11 10 7 12
S C L S D A D G N D I S O M A D
sound intercarrier output
and MAD select
24 SIF2
23 SIF1
22 OP2
21 AFC
20 V P
19 VPLL
TDA9885
TDA9886
18 AGND
17 CVBS
(1)
16 VAGC
15 REF
14 TAGC
13 n.c.
AFC
21
CVBS
17
video output 2 V (p-p)
[1.1 V (p-p) without trap]
8 AUD
AUDIO PROCESSING
DEEM
5
AND SWITCHES
de-emphasis
network
6 AFD
DETECTOR
C
AF
4
F M P L L
FM-PLL filter
G_16510_059.eps
090325