TDA9885 Philips Semiconductors, TDA9885 Datasheet - Page 7

• Manufacturer Part Number: TDA9885
• Description: I2C-bus controlled single and multistandard alignment-free IF-PLL demodulators
• Manufacturer: Philips Semiconductors

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VIF2
VIF1
SIF2
SIF1
(1) Not connected for TDA9885.
Pin numbers for TDA9885HN and TDA9886HN in parenthesis.
2 (31)
1 (30)
24 (27)
23 (26)
TUNER AGC
20 (22)
SUPPLY
V P
TOP
9 (8)
TAGC
14 (15)
C AGC(neg)
18 (20)
AGND
C VAGC(pos)
VIF-AGC
n.c.
(6, 12, 13, 14, 17,
19, 25, 28, 29, 32)
13
SIF-AGC
VAGC
16 (17)
SINGLE REFERENCE QSS MIXER
C BL
C AGC
(1)
AND AM DEMODULATOR
INTERCARRIER MIXER
VIF-PLL
OUTPUT
PORTS
3 (1)
OP1
19 (21)
VPLL
VIF-PLL
filter
RC VCO
22 (24)
OP2
I
2
C-BUS TRANSCEIVER
MAD
11 (10)
SCL
Fig.1 Block diagram.
10 (9)
SDA
DIGITAL VCO CONTROL
TDA9885
TDA9886
sound intercarrier output
7 (5)
DGND
and MAD select
external reference signal
or 4 MHz crystal
12 (11)
SIOMAD
15 (16)
REF
FM-PLL DEMODULATOR
SOUND CARRIER
AFC DETECTOR
4.5 to 6.5 MHz
NARROW-BAND
TRAPS
AUDIO PROCESSING
21 (23)
AFC
AND SWITCHES
FMPLL
4 (2)
FM-PLL
filter
(18) 17
MHC108
(7) 8
(3) 5
(4) 6
CVBS
AUD
DEEM
AFD
video output: 2 V (p-p)
[1.1 V (p-p) without trap]
de-emphasis
network
audio output
C AF