LA75521VA Просмотр технического описания (PDF) - SANYO -> Panasonic

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Компоненты Описание

производитель

LA75521VA

IF Signal Processing (VIF+SIF) IC that Supports the PAL Video Standard for TV Sets and VCRs

SANYO -> Panasonic 

Pin Assignment

LA75521VA

DE-EMPHASIS C 1

SIF AGC FILTER 2

FM PLL FILTER 3

VCC 4

VIDEO OUTPUT 5

EQ FILTER 6

SIF SYSTEM SW A 7

APC FILTER 8

SIF SYSTEM SW B 9

VIF FREQUENCY SW 10

REFERENCE CP INPUT 11

AFT OUTPUT 12

LA75521VA

24 AUDIO OUTPUT

23 FILTER CONTROL C

22 AUDIO BIAS FILTER

21 SIF CARRIER OUTPUT

20 RF AGC VR

19 GND

18 VIF IN 1

17 VIF IN 2

16 VIF AGC FILTER

15 AFT MUTE LEVEL

14 RF AGC OUTPUT

13 1st SIF INPUT

Top view

Block Diagram

AUDIO

OUTPUT

SOUND CARRIER

OUTPUT

1μF

1μF

VIF/SIF

INPUT

0.022μF

SAWF(P)

RF AGC

OUTPUT

SW15

SAWF(S)

V4

V3

V2

V1

SW13

SW10 VIF FREQUENCY

V3

39.5MHz

V2

38.9MHz

V1

38.0MHz

24 23 22 21 20 19 18 17 16 15 14 13

DE-

EMP

AMP

FM

DET

SIF

AMP

AGC

RF

AGC

IF

AGC

SPLIT

AMP

INT

TRAP

EQ

AMP

VIF

AMP

VIDEO

DET

1stSIF

TRAP AMP

AGC

VCO

APC

AFT

SW

MODE

CTRL

12345

0.01μF

0.033μF

3.3kΩ

0.01μF

330pF

VIDEO

OUTPUT

6 7 8 9 10 11 12

0.47μF

SW11

51Ω

SW10

1000pF

V3

SYSTEM SW SYSTEM SW

V2 270kΩ

V1

A

B VIF FREQ. 4.43/4MHz

SW11 REFERENCE

OPEN 4.43MHz

SHORT 4.0MHz

SW13

OPEN

SHORT

SYSTEM

SPLIT

INTER

SW15 AFT MUTE LEVEL B/G TRAP SHIFT

V4 MIDDLE (VCC/2)

V3 MIDDLE (VCC/2)

V2

HI (VCC)

V1

HI (VCC)

0

+250kHz

0

+250kHz

AFT

OUTPUT

Pin 7 Pin 9 SIF SYSTEM

HI HI

M

HI LO

I

LO HI

B/G

LO LO

D/K

VCC

No.A1004-5/13

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