BA7207AK View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA7207AK

SECAM chroma signal processor for VHS VCRs

ROHM Semiconductor 

Video ICs

•Block diagram

BA7207AS (SDIP32)

BA7207AS / BA7207AK

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

VREG

PAL SCM

LIM

MODE

CONTOROL

×2

2.2MHz

BPF

×2

P

4.3MHz

BPF—A

RP

BELL

R

R

P

FREQUENCY

ADJUSTER

LIM

4.3MHz

BPF - B

PB P

SYNC GATE

R

P

P EQ

1.1MHz

BPF

R

R ÷4

REC

SYNC GATE

DET VCO

SYNC GATE TIMING

GENERATOR

SCM PAL

12

34

5

6

7

8

9 10 11 12 13 14 15 16

BA7207AK (SQFP44)

TRAP 34

PALRIN 35

VREG 36

33

32

31

30

PAL SCM

VREG

29

28

27

26

25

24

23

VCC

22 CREF3

LIM

MODE

CONTROL

21 RECH

20 PBIN

N.C. 37

× 4O 38

N.C. 39

RECIN 40

N.C. 41

×2

P

2.2MHz

BPF

×2

LIM

P

4.3MHz

BPF—A

R

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

P

R

SYNC GATE

TIMING

GENERATOR

MUL 42

FADJ1 43

SCM PAL

19 N.C.

18 BWL

17 N.C.

16 SYNCIN

15 N.C.

14 DIV

13 PALPIN

FADJ2 44

12 SGC

1

2

3

4

5

6

7

8

9

10

11

2

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