Samsung KA7305 Datasheet

KA7305 B/W CCD PROCESSOR

ORDERING INFORMATION

GENERAL DESCRIPTION

The KA7305 is a monolithic integrated circuit for B/W CCD
camera 1 chip signal processor.
It contains functional block from CDS to video driver and
2 comparators for EE mode. Also, it performs a low power
onsumption and a small dimension of set implementation
by decreasing external parts as a 1 chip.

FEATURES

* 5 Steps sample & hold.
* 4 dB ~ 32 dB AGC gain control.
* Built in 2 comparators for EE mode control.
* EE mode WND / BLK selectable.
* Gamma γ = 0.45 / Linear output separation.
* Built in OP-AMP for AGC loop.
* 3 Mode set-up control.
* 2 Mode white / clip control.
* 75 Ohm video driver & sag compensation.

BLOCK DIAGRAM

Device Package OperatingTemperature

KA7305 48-QFP-0707

48-QFP-0707

-20°C ~ +75°C

4044

OB
CLP

24 25

LUM
DET

LIN

VIDEO
DRIVE

6

OP
AMP

38

+

-

39

37

17

33

26

19

36

OB
CLP

4

SAMPLE
& HOLD

OB
CLP

20 43

3 21

EE
AMP

18 21

48

+

-

SET-UP
CONTROL

+

AGC
AMP

-

GAMMA
r=0.45

WHITE
CLIP

464241

22 23

45

LUM &
SYNC
MIX

9

7

DUMMY
CLAMP

8

34

WIN/
BLK

16
35

32

+

COMP

-

31
30

+

COMP

-

29

27 28

5

KA7305 B/W CCD PROCESSOR

VCC1

SHP1

SHD

SHP2

GND1

GND2

PG

DATA

CLP3

N.C

N.C

N.C

PIN CONFIGURATION

DET OUT
OP(+)
OP(-)
OP OUT
AGCONT
AGCMAX
CLP1

CLP

IN
AGC OUT
N.C
VCC2

37
38
39
40
41
42
43

44

45
46
47
48

VCC3

IRIS CLP

3536

IRIS OUT

34

CP1(+)

GND4

CP1(-)

313233

CP2(+)

30

CP2(-)

KA7305

B/W CCD PROCESSOR

2

1

3

4

6

5

7 8

9

EEI

10

EE2

VIDEO OUT

2526272829

12

11

SAG

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

BLK
SYNC
W/C
SET-UP
VIDEO IN
GND3

OUT
LINEAR
WIN/BLK
N.C
N.C
N.C

KA7305 B/W CCD PROCESSOR

PIN DESCRIPTION

No Symbol I/O Description Remark

1 VCC1 - Power supply
2 SHP1 I Precharge sample & hold pulse Active high
3 SHD I Data sample & hold pulse Active high
4 SHP2 I Precharge sample & hold pulse Active high
5 GND1 - Ground
6 GND2 - Ground
7 PG I CCD signal input
8 DATA I CCD singal input

9 CLP3 I Dummy clamp pulse Active high
10 N.C - No connection
11 N.C - No connection
12 N.C - No connection
13 N.C - No connection
14 N.C - No connection
15 N.C - No connection

16 WIN/BLK I Window/Blank pulse Active high
17 LINEAR O Linear out
18
19 GND3 - Ground
20 VIDEO IN I Video driver input signal
21 SET-UP I Set - up level control
22 W/C I White - clip level control

23 SYNC I Composite sync pulse
24 BLK I Composite blank pulse

25 SAG I Sag compensation
26 VIDEO OUT O Composite video signal output
27 EE2 O EE more comparator output 2
28 EE1 O EE more comparator output 1
29 CP2(-) I EE more comparator2 - input
30 CP2(+) I EE more comparator2 + input
31 CP1(-) I EE more comparator1 - input
32 CP1(+) I EE more comparator1 + input
33 GND4 - Ground
34 IRIS OUT O IRIS detect output
35 IRIS CLP - IRIS clamp
36 VCC3 - Power supply
37 DET OUT O AGC detect output
38 OP(+) I AGC OP AMP input (+)
39 OP(-) I AGC OP AMP input (-)
40 OP OUT O AGC OP AMP output
41 AGCONT I AGC gain control
42 AGCMAX I AGC maximum gain control
43 CLP1 I Optical black level clamp pulse Active high
44
45
46 AGC OUT O AGC output signal
47 N.C - No connection
48 VCC2 - Power supply

ϒ OUT

ϒ CLP

ϒ IN

O Gamma out

- Gamma clamp
I Gamma input