TDA9809 Philips Semiconductors, TDA9809 Datasheet - Page 4

• Manufacturer Part Number: TDA9809
• Description: Single standard multimedia IF-PLL and FM radio demodulator
• Manufacturer: Philips Semiconductors

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tuner AGC
TV/radio
10.7 MHz
SAW
VIF
TAGC
V iVIF1
V iVIF2
V iRIF
12
1
2
4
AGC DETECTOR
VIF AMPLIFIER
TUNER
TADJ
AGC
AND
LOGIC
20
LP0
3
C VAGC
AGC
VIF
5
LP2
8
T PLL
FPLL
6
AGC DETECTOR
RIF AMPLIFIER
soft mute
threshold
AND
adjust
INTERCARRIER
AND TV AFC
15
2
MIXER
TWD
VCO
f PC
Fig.1 Block diagram.
10
V o(int)
16
10.7 MHz
4.5 MHz
DEMODULATOR
DETECTOR
AND AMPLIFIER
V iFM
11
TDA9809M
TV AFC
VIDEO
FM-PLL DEMODULATOR AND
LEVEL DETECTOR
AF SIGNAL PROCESSING
AFC/RIF
forced
mute
level
14
9
C DEC
STABILIZER
V P
INTERNAL
VOLTAGE
19
RADIO
AFC
GND
18
17
10.7 MHz
ceramic
resonator
13
7
1.1 V (p-p)
SOUND
MHA957
TRAP
1 V (p-p)
video
V oAF