BA7207AK View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA7207AK

SECAM chroma signal processor for VHS VCRs

ROHM Semiconductor 

Video ICs

BA7207AS / BA7207AK

BA7207AK (QFP44)

1N 2

SW30b

REC OUT

1N 2

SW21

VCC

0.1µ

0.01µ

0.1µ

0.1µ

I23

A

+

47µ

VCC

OSC30

~

12

SW30a

0.01µ

27p

47µ

34

35

VREG

36

0.1µ

VCC 37

38

39

0.01µ

40

~ OSC1

41

33 32 31 30 29 28 27 26 25

VCC

LIM

PAL SCM

VREG

×2

P

2.2MHz

BPF

×2

LIM

P

R

4.3MHz

BPF—A

R

R

BELL

P

4.3MHz

BPF—B

PR

EQ

PB

SYNC GATE

1.1MHz

BPF

÷4

REC

SYNC GATE

R

P

FREQUENCY

ADJUSTER

DET

VCO

24 23

MODE

CONTROL

P

R

SYNC GATE

TIMING

GENERATOR

42

SW2

12

43

SCM PAL

3.9k

VCC

44

SW3 SW4

1 21 2

2k

2k

VR1

VR2

8.5k

8.5k

7.5k

7.5k

PB SG OUT

1

2

470

470

3

4

5

67

0.01µ

12µ

560p

SW8

10k

1 23

+

~OSC8 0.47µ

8

9

100k

10 11

33k

4700p

1N 2

1N 2

SW19

SW4b

1.5V

2.5V

0.1µ

22

21

20

0.01µ

19

SW18

1

2

18

~

OSC18

17

16

15

100p

14

SW16

1

2

SG16

13

0.01µ

12

1

SW14a SW15

2

12

~

OSC14

3.3k

VCC

AMP OUT

PB OUT

SGC

REC SG OUT

Fig. 2

11

Share Link: