STV5728 Ver la hoja de datos (PDF) - STMicroelectronics

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STV5728

4-HEAD VIDEO AND 2-HEADS HIFI AUDIO PLAYBACK AND RECORD AMPLIFIER FOR VCR

STMicroelectronics 

STV5728

TYPICAL APPLICATION

1nF 620Ω

1nF 620Ω

1nF 620Ω

H1S P

1

2

3

H2S P

S P HEADS

4

470nF

5

CCOM

6

LP HEADS

7

H2 LP

60dB

60dB

60dB

REC

PB

H2 LP

H1 LP

H1S P

H2S P

Re c ord

Amplifica tor

28

27

+5V

26

25

24

P layba ck

23

AGC

22

8

60dB

21

De te ctor

9

H1 LP

20

470nF

Re cord Re fere nce

10

Curre nt (FM)

19

CCOM2

11

18

HIFI HEADS

70dB

Re cord AGC

12

17

H1 F M

13

14

H2 F M

70dB

S TV5728

P B REC MUTE

H1FM OFF

H2FM ON

16

+5V

15

22kΩ

8.2kΩ

S WR

S WH

S WM

Rrcy : 2.2kΩ 22nF

Rrcc : 8.2kΩ 22nF

YRE C

CREC

CPB

RADJ : 22kΩ

22nF

CAGC

22nF

Rfmin : 12kΩ

YP B

TRIV (ATR)

ENV

Enve lope Comp

F MRE C

F MP B

100nF

22µH

22 F

S WFMH

VCC

SWITCH TABLE (Video)

SWR

L (PB)

SWM

L

H

L

H (REC)

H

SWITCH TABLE (FM HIFI)

SWR

L

H

10/11

SWFMH

L

H

L

H

SWH

L

H

L

H

L

H

L

H

Channel

H2SP

H1SP

H1LP

H2LP

SP

LP

Channel

H2FM

H1FM

ENVC

HIGH if LP < SP

LOW if LP > SP

Record Mute

ON

OFF

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