TDA9820 查看數據表（PDF） - Philips Electronics

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TDA9820

Multistandard/dual channel TV FM intercarrier sound demodulator

Philips Electronics 

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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