32JF-77H
TDA9886 (IC201)
Block Diagram
6 BLOCK DIAGRAM
AF
C
audio outputnetwork
de-emphasis
video output: 2 V (p-p) [1.1 V (p-p) without trap]
CVBSAUDDEEMAFD
(7) 8(3) 5(4) 6
MHC108
(18) 17
filter
FM-PLL
4 (2)
AND SWITCHES
AUDIO PROCESSING
NARROW-BAND
AFC DETECTORSOUND TRAPS 4.5 to 6.5 MHz
FM-PLL DEMODULATOR
REFAFC
12 (11)SIOMAD
or 4 MHz crystal
external reference signaland MAD select
7 (5)DGND
TDA9885 TDA9886sound intercarrier output
handbook, full pagewidth
DIGITAL VCO CONTROL10 (9)SDA
Fig.1 Block diagram.
MAD11 (10)SCLC-BUS TRANSCEIVER
2
I
RC VCO22 (24)
filter
VIF-PLL
VPLL19 (21)
3 (1)OP1OP2FMPLL
OUTPUT PORTS
VIF-PLL
INTERCARRIER MIXER AND AM DEMODULATOR
(1)BLAGC
CC
SINGLE REFERENCE QSS MIXER
VAGC
SIF AGC
(6, 12, 13, 14, 17, 19, 25, 28, 29, 32) 13n.c.
VIF-AGC
VAGC(pos)
CAGC(neg)
C18 (20)AGND
TAGC14 (15)
TOP9 (8)1615 (16)21 (23)P
SUPPLY20 (22)V
TUNER AGC
2 (31)1 (30)24 (27)23 (26)
VIF2VIF1SIF2SIF1(1)Not connected for TDA9885.Pin numbers for TDA9885HN in parenthesis.
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