Datasheet AN2050FB Datasheet (Panasonic)

AN2050FB

CCD Monochrome Video Camera Signal Processor IC

■ Overview

The AN2050FB is an integrated circuit specified to
the monochrome CCD image element which is em­ployed in the monitoring video cameras, door phones,
TV telephone sets, etc. The high frequency block and
power block that are composed of 3-chip of DS signal
processing, AGC. Γ compensating and NTSC output
so far, are integrated into one chip to offer low cost.

■ Features

• Frequency characteristics:10MHz (icompatible with
the CCD image element of 330,000 pixels)

• AGC range:18dB (improved SN ratio)

• Operating supply voltage range:4.5V to 5.3V (typ.
5V)

• Power consumption:typ. 225mW

10.0±0.3

33 23

34

10.0±0.3

44

111

0.1±0.1

(0.55)

44-Pin QUADFLAT Package (QFP044-P-1010)

12.3±0.4

22

12

– 0.05

+0.1

0.15

0.8

0.35±0.1

0.9±0.25

0.9±0.25

Unit:mm

12.3±0.4

2.0±0.2

■ Block Diagram

V

CC

(DS)

34 33 35 32 31 29 26 28 27 24 4 21 5 6 22 25

Clamp S.H

37

30

ALC

38

DET

GND

36

(DS)

39

41

40

42

43

44

–
+

–
+

ALC

DC
F··B

DC
F·B

–
+

Vref

Chara.
Mix

Chara.
SW

Chara.
Clamp

AGC
OP

CC

(Video)

Mix

Amp

DC
F·B

1114910121331521

AP
Amp

AP
Clamp

Y.
Clamp

AP
Clip

20

19

17

23

16

18

Γ

8

7

AGC
Det.

Y·
Cont

Y·

H.Clip

C.BLK
Mix

Low
Clip

Γ

Γ

ALC
Amp

Clamp

WHD
MIX

Vref

AGC

Flicker

Video
out

Clamp

V.Sync
Mix

Amp

G

Pulse
Sep.

GND GND V

■ Absolute Maximum Ratings (Ta=25˚C)

Parameter Symbol Rating Unit

Supply voltage
Supply current
Power dissipation
Operating ambient temperature
Storage temperature

V

CC

I

CC

P

D

T

opr

T

stg

■ Recommended Operating Range (Ta=25˚C)

Parameter Symbol Range

Operating supply voltage range

V

CC

■ Electrical Characteristics (Ta=25˚C)

Parameter minCondition typ max UnitSymbol

OB control (1)
OB control (2)
AGC amp gain (1)
AGC amp gain (2)
ALC DET output

Γ circuit gain (1)
Γ circuit gain (2)

AGC DET output
AP clip (1)
AP clip (2)
YΓ amp gain
Supply current (1)
Supply current (2)
CP1 pulse separation level
WHD pulse separation level
WBL pulse separation level
CP2 pulse separation level
BLK pulse separation level

V

V
G
G

V

GΓ
GΓ

V

AGC/DET

G

G

GYΓ

V
V

V

V

V

OB1

OB2

AGC1

AGC2

ALC

CL1

CL2

I

25

I

33

CP1

WHD

WBL

CP2

BLK

1

2

=5V

V

CC

VCC=5V
V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

=5V

V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

V

=5V

CC

5.5
54

280

–20 to +75

–55 to +125

4.5V to 5.3V

35 55 75 mV
–85
130

–65
170

16 19 22 dB
500 600 700 mV
660 800 940 mV

550 mV

400 480 560 mV

0.9 1.1 1.4 V
–10 dB

1.1 1.3 1.5 V

26.5 31 35.5 mA

9.5 14 18.5 mA

3.4 3.8 4.2 V

2.15 2.55 2.95 V

0.4 0.8 1.2 V

3.1 3.5 3.9 V

0.6 1 1.4 V

–45
210

mA

mW

V

˚C
˚C

PP

mV

PP

mV

PP

PP

PP

PP

PP

PP

PP

■ Applica tion Circuit

Sig IN

5V

PED Setting

0.047µF

For Iris Driving

Buffer

–

100pF

DS

10kΩ

1kΩ

1kB

10kB

DC
F·B

AP
Clamp

AP Clip

Y·

Γ

Clamp

Vref (–1.8V)

–
+

3kΩ

to

6kΩ

5V

DL

23

0.047µF

Vref

5V

20

DL

19

0.047µF

17
16

0.1µF

5V

18

8

0.047µF

9V

2.4kΩ

22kΩ

4.7kΩ

Vcc

CP (DS) SP3

34

33 35 32 29 27 21

Clamp

37

S.H

R Amp

30

+

ALC

38

DET

36

ALCT

DC
F·B

390kΩ

ALC
Amp

–

+

1kΩ LPF

4.7kΩ

31

Clamp

WHD
MIX

39

5V

41

ALC Op-amp.

–

47µF

Vref

1kΩ

1.2kΩ

26

–
+

5V

AGC

Flicker

47µF

–
+

AGC

5V

30kΩ

24 4

Clamp

Auto

0.047µF

Manual

10kB

33kΩ

4.7µF

AGC
Det

Y·

Cont

Y·

–

+

Γ

Γ

12kΩ

1.6MΩ

528 6 22

AGC
Ope-amp.

–
+

AP Amp.

+

40

42

43

44

Vref

–
+

ALC Op-amp.

H Clip

C. BLK
MIX

Chara.
MIX

Chara.
SW

MIX

Amp

CP2
BLK

CP1

WHD

WBLK

10kΩ

10kΩ
10kΩ

Pulse
Sep.

1 2 15 3

CP2

BLK

WBLK

Vref

+
–

CP1

47µF

WHD

Video
Out

Sig out

V SYNC
MIX

10 9 14 25

13

12

Sync

4kΩ

0V

12kΩ

5V

5V

Low
Clip

PED

5V

Chara.
Clamp

11

V

DC F·B

(Video)

CC

7

V

CC

5V

0.047µF

5V

■ Pin Descriptions

Pin No.

1

2

Pin name Typ. waveform

Pulse input 1

Pulse input 2

3.3V

1.6V

5V

2.5V

Pin No.

CP2

5V

BLK

CP1

WHD

WBL

23

24

Pin name Typ. waveform

DC control

γ input

800mV

1.8V

PP

3

GND

4

AGC DET

5

AGC op. amp. input

6

AGC op. amp. output

7

DC control

8

Yγ input

9

PED

10

GND

11

Character input

12

SYNC input

13

Video output

14

V

CC

15

V

ref

(Video)

25

V

CC

480mV

PP

–

320mV

PP

1.8V

2V

DC

1.8V

2.5V

Clamp

PP

IN

Flicker control

26

AGC output

27

AGC control

28

AGC input

29

PED setting

30

DS amp. output

31

DC output

32

V

33

34

35

36

37

(DS)

CC

Clamp pulse input

Sample hold pulse input

GND (DS)

DS input

Open 1.8V

1.8V

1.8V

0V

0V

Reset pulse

800mV

PP

250mV

PP

250mV

PP

100ns

5V

100ns

5V

Signal

16

Aperture input

17

Aperture amp. output

18

Aperture clip

19

Aperture amp. input +

20

Aperture amp. input –

21

γ control

22

γ output

2.5V

350mV

1.8V

580mV

ALC DET

38

DC control

39

ALC op. amp. output

40

ALC op. amp. input –

41

ALC op. amp. input –

42

ALC op. amp. input +

43

PP

ALC op. amp. output

44

PP