TDA9800 查看數據表（PDF） - Philips Electronics
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TDA9800 Datasheet PDF : 23 Pages
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Philips Semiconductors
VIF-PLL demodulator and FM-PLL detector
Preliminary specification
TDA9800
VP = 5 V (9 V)
VP
20
GND 18
INTERNAL
REFERENCE
VOLTAGE
Vi VIF1 1
IF input
Vi VIF2 2
Vi PC
CCS 4
3-STAGE
IF-AMPLIFIER
TRAVELLING
WAVE
DIVIDER
FREQUENCY
DETECTOR
AND PHASE
DETECTOR
TUNER
AGC
IF
AGC
3
TOP
12
TAGC
takeover
point
tuner AGC
output
2fPC
TPLL
6
VCO2
17
VCO1
16
VCO
AFC
15
AFC
VIDEO
DEMODULATOR
VIDEO
AMPLIFIER
AF
AMPLIFIER
9 Vo AF
10 CAF
CAF
FM-PLL
TDA9800
AGC
DETECTOR
19
CAGC
CAGC
5
8
MUTE n.c.
sound
MUTE
sound
mute
BUFFER AND
NOISE
CLIPPING
7 Vo CVBS
2 V (p-p)
13
Vo(vid)
14
Vi(vid)
11
Vi IC
SOUND SOUND
TRAP FILTER
1 V (p-p)
video and
intercarrier
MED329
July 1994
Fig.1 Block diagram.
3
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