Pioneer PDP-R04G Service Manual page 221

1
TDA9818TS (AV BOARD ASSY : IC7501)
• Single/multistandard VIF/SIF-PLL and FM-PLL/AM Demodulators
A
Pin Arrangement (Top view)
VIF1 1
VIF2 2
STD
3
4
CVAGC
5
CSAGC
B
6
TPLL
LADJ 7
8
AF
Vde-em 9
Cde-em
10
11
CDEC
12
QSS
C
Block Diagram
TOP
D
22
TUNER
TAGC 14
AGC
VIF1 1
VIF AMPLIFIER
VIF2 2
SIF1
23
SIF AMPLIFIER
E
SIF2
24
SIF
AGC
5
CSAGC
F
170
1
2
24 SIF2
23 SIF1
22 TOP
21
VP
20 GND
19 VCO2
18 VCO1
17 AFC
CVBS
16
CBL
15
14 TAGC
13 FMin
TPLL
CBL
CVAGC
15 4 6
VIF
AGC
FPLL
INTERCARRIER
MODE SWITCH
3
STD
PDP-R04E
2
3
Pin Function
No. Pin Name
1 VIF1 VIF differential input signal voltage 1
2 VIF2 VIF differential input signal voltage 2
3 STD Standard selection switch
4 CVAGC VIF AGC capacitor
5 CSAGC SIF AGC capacitor
6 TPLL PLL filter
7 LADJ L/L accent switch and adjust
8 AF Audio output
9 Vde-em De-emphasis output
10 Cde-em De-emphasis input
11 CDEC Decoupling capacitor
12 QSS Single reference QSS/intercarrier output voltage
13 FMin Sound intercarrier input voltage
14 TAGC Tuner AGC output
15 CBL Black level detector
16 CVBS Composite video output voltage
17 AFC AFC output
18 VCO1
VCO1 resonance circuit
19 VCO2 VCO2 resonance circuit
20 GND Ground
21 VP Supply voltage
22 TOP Tuner AGC takeover point adjust
23 SIF1 SIF differential input signal voltage 1
24 SIF2 SIF differential input signal voltage 2
LADJ VCO2 VCO1
7 19 18
AFC
DETECTOR
VCO
TWD
VIDEO
DEMODULATOR
AND AMPLIFIER
QSS MIXER
INTERCARRIER MIXER
AM DEMODULATOR
12 13
QSS FMin
3
4
Pin Function
AFC
GND
VP
17 21 20
VOLTAGE
REFERENCE
16
8
FM-PLL
DEMODULATOR
9 10 11
Vde-em Cde-em CDEC
4
CVBS
AF