TDA9801 查看數據表（PDF） - Philips Electronics

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TDA9801

Single standard VIF-PLL demodulator and FM-PLL detector

Philips Electronics 

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VP = 5 V (9 V)

VP

20

GND 18

INTERNAL

REFERENCE

VOLTAGE

VIF1 1

3-STAGE

IF-AMPLIFIER

VIF2 2

ADJ 4

TRAVELLING

WAVE

DIVIDER

FREQUENCY

DETECTOR

AND PHASE

DETECTOR

TUNER

AGC

IF

AGC

3

TOP

12

TAGC

takeover

point

R TOP

tuner AGC

2fPC

TPLL

6

VCO2

17

VCO1

16

AFC

15

VCO

AFC

DETECTOR

VIDEO

DEMODULATOR

VIDEO

AMPLIFIER

AF

AMPLIFIER

9 AF

10 DAF

FM-PLL

DETECTOR

CDAF

TDA9801

AGC

DETECTOR

19

AGC

CAGC

5

8

MUTE n.c.

sound

mute

switch

sound

mute

LIMITER

AMPLIFIER

BUFFER AMPLIFIER

AND NOISE CLIPPER

7 CVBS

2 V (p-p)

13

14

11

VSO

VI

SI

SOUND

TRAP

1 V (p-p)

SOUND

FILTER

video and

intercarrier

MHA879

Fig.1 Block diagram.

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