Panasonic AN2018S Datasheet

AN2018S

p

Unit

Correlated Double Sampling IC

■ Overview

The AN2018S is used to reduce noise in CCD im­age sensor output signal. It performs correlated double­sampling on image signal sent from a CCD sensor to
output clearer image signal.

■ Features

• Operating on low voltage (VCC=4.8V), consuming
little current (ICC=12.7mA typ.)

• Including a high-speed sampling circuit responding
to 510-830H CCD

• 6dB or 9dB fixed gain

• 83-dB high S/N-ratio (at 6dB output)

0.41.27

0.4±0.25

0.1±0.1

0.3

4.2±0.3

6.5±0.3

8-Pin SOP Package (SOP008-P-0225)

■ Pin Descriptions

Pin No.

CDS output (9dB)

1
2

Blanking pulse input
CCD signal input

3
4

V

CC

5

Sampling pulse input (2)

6

Sampling pulse input (1)

7

GND

8

CDS output (6dB)

Pin name

0.15

:mm

5.0±0.3

1.5±0.2

0.65

■ Block Diagram

6dB OUT GND SP1 SP2

8765

+

+

9dB

–

BLK

50kΩ

BIAS

1234

9dB OUT BLK SIG.IN V

6dB

–

S / H

S / H

CC

■ Absolute Maximum Ratings

Parameter Symbol Rating Unit
Supply voltage
Supply current
Power dissipation
Operating ambient temperature
Storage temperature

Note 1)

Note 1)

V

CC

I

CC

P

D

T

opr

T

stg

5.5
18
99

–20 to +70

–55 to +125

Note 1) Ta=25˚C except operating ambient temperature and storage temperature.

■Recommended Operating Range (Ta=25˚C)

Parameter Symbol Range

Operating supply voltage range

V

CC

4.5V to 5.1V

■ Electrical Characteristics (VCC=4.8V, Ta=25±2˚C)

Parameter minCondition typ max UnitSymbol

Supply current
Terminal voltage pin (3)

Terminal voltage pin (8)

Terminal voltage pin (1)
6dB amp. gain

9dB amp. gain
AMP frequency characteristics

AMP common mode
rejection ratio

*

Sampling pulse threshold (1)
Sampling pulse threshold (2)

Blanking pulse high level

I

CC

V

3

V

8

V

1

G

1

G

2

*

f

C

CMR

V

TH1

V

TH2

V

THB

Note) The value in the above characteristics is not a guaranteed value, but reference one on design.
*

The characteristics are of the amplifier itself.

4.8V

V

CC

=

4.8V

V

CC

=

Pint, y=4.8V

4.8V

V

CC

=

Pint, y=4.8V

4.8V

V

CC

=

Pint, y=4.8V
Input level=300mV
Input level=300mV

4.8V

V

CC

V
V

V
V
V
V

V

=
100mV

3

=

CC

=
100mV

3

=

CC

=

CC

=

CC

=
300mV

3

=

4.8V

4.8V

4.8V

4.8V

P–P

P–P

P–P

10MHz

10MHz

P–P

P–P

9.2

2.48

1.30

1.25

5.0

7.8

0.8

0.8

3.5

12.7

2.63

1.60

1.55

6.0

9.0

3.0

–

35

–

1.5

1.5 2.2

V

mA

mW

˚C
˚C

16.2 mA

1.90

1.85

7.0

10.2

dB
dB

dB

dB

2.2

V2.78

V

V

V
V

V