TDA9820 データシートの表示（PDF） - Philips Electronics
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TDA9820 Datasheet PDF : 20 Pages
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Philips Semiconductors
Multistandard/dual channel TV FM
intercarrier sound demodulator
BLOCK DIAGRAM
Product specification
TDA9820
4.5 MHz (M)
handbook, full pagewidth
Rs (1)
5.5 MHz (B/G)
3
6.0 MHz (I)
1
16
2
6.5 MHz (D/K)
TDA9820
7-STAGE
LIMITER
AMPLIFIER 1
intercarrier
15
4.72 MHz (M)
or
5.74 MHz (B/G)
or
6.74 MHz (D/K)
7-STAGE
LIMITER
AMPLIFIER 2
SUPPLY
mute
9
+8
−
V AF1
VCO 1
5
S1
CONTROL
standard
UNIT
6 S2 switch
VCO 2
−7
+
V AF2
13 14 12 11
VCOref
optional stereo
channel separation
adjustment
(1)
10
MHA420
VP =
4.5 to 8.8 V
Rpot
(1) Resistor and potentiometer between capacitor and earth are inserted if adjustment of stereo channel separation is required.
Fig.1 Block diagram.
1996 Nov 20
3
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