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廬

VSP

20

80

廬

VSP2080

CCD SIGNAL FRONT-END

PROCESSOR FOR DIGITAL CAMERAS

TM

FEATURES

q

CCD SIGNAL PROCESSING

Correlated Double Sampling

Black Level Clamping

0 to +34dB Gain Range

55dB SNR Referred to Full Scale

q

SELECTABLE LOGIC-INPUT POLARITY

Positive Active or Negative Active

q

PORTABLE OPERATION

Low Voltage: 2.7V to 3.6V

Low Power: 144mW at 3.0V

Power-Down Mode: 10mW

DESCRIPTION

The VSP2080 is a complete front-end processing IC

for digital cameras. The VSP2080 provides signal

conditioning for the output of a CCD array. The

VSP2080 provides correlated double sampling to ex-

tract the video information from the pixels, 0dB to

+34dB gain range with analog control for varying

illumination conditions, and black level clamping for

an accurate black reference. The stable gain control is

linear in dB. Additionally, the black level quickly

recovers after screen changes. The MODE pin allows

the selection of logic-input polarity. The VSP2080 is

available in a 20-lead TSSOP package.

APPLICATIONS

q

q

q

q

VIDEO CAMERAS

DIGITAL STILL CAMERAS

PC CAMERAS

SECURITY CAMERAS

REFCK

DATCK

MODE

AGC IN

C

OB

Logic Input

Polarity

Control

Optical

Black Level

Auto-Zero

Clamp

OUT

CCD

OUT

CCD D

Correlated

Double

Sampling

+6dB

Log

VCA

+28dB

CCD R

Dummy

Pixel

Auto-Zero

Internal

Bias

Generator

DUMC

REFT

REFB

REF IN

International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111

Twx: 910-952-1111 鈥?Internet: http://www.burr-brown.com/ 鈥?Cable: BBRCORP 鈥?Telex: 066-6491 鈥?FAX: (520) 889-1510 鈥?Immediate Product Info: (800) 548-6132

漏

1998 Burr-Brown Corporation

PDS-1498B

Printed in U.S.A. August, 1999

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