OV6120 datasheet(4/31 Pages) ETC

4 / 31 page

OV6620/OV6120

Version 1.11

14 May 1999

SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS

OMNIVISION TECHNOLOGIES, Inc.

Advanced Information

Preliminary

Figure 1. OV6620/OV6120 CMOS Image Sensor Block Diagram

AWBTH/

VTO

image

column sense amp

array

GAMMA

white

exposure

detect

control

balance

detect

AWB

AGCEN

XVCLK1

(356x292)

1/2

sys-clk

FODD

VSYNC

HREF

PCLK

video timing generator

FZEX

exposure control

FREZ

CHSYNC

ADC

Y(7:0)

UV(7:0)

interface

SCL SDA

registers

ADC

IICB

analog processing

FSIN

MIR

DENB

PROG

AWBTM

1.1

Overview

Referring to Figure 1, OV6620/OV6120 CMOS Image

Sensor Block Diagram below, the OV6620 sensor in-

cludes a 356 x 292 resolution image array, an analog

signal processor, dual 8-bit Analog-to-Digital convert-

ers, analog video multiplexer, digital data formatter and

video port, I2C interface and registers, digital controls in-

cluding timing block, exposure, and black and white

balance.

The OV6620/OV6120 sensor is a 1/4-inch CMOS imag-

ing device. The sensor contains approximately 101,376

pixels. Its design is based on a field integration read-out

system with line-by-line transfer and an electronic shut-

ter with a synchronous pixel read out scheme. The color

filter of the sensor consists of a primary color RG/GB ar-

ray arranged in line-alternating fashion.

1. Functional Description

(Note: References to color features do not apply to the OV6120 B&W Digital Image Sensor.)

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