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ADVANCE INFORMATION

LM9628 Color CMOS Image Sensor VGA 30 FPS

General Description

The LM9628 is a high performance, low power, 1/3” VGA CMOS

Active Pixel Sensor capable of capturing color digital still or

motion images and converting them to a digital data stream.

In addition to the active pixel array, an on-chip 12 bit A/D conver-

tor, fixed pattern noise elimination circuits, a video gain and sep-

arate

color

gain

amplifier

are

provided.

Furthermore,

an

integrated programmable smart timing and control circuit allows

the user maximum flexibility in adjusting integration time, active

window size, gain and frame rate. Various control, timing and

power modes are also provided.

The excellent linear dynamic range of the sensor can be

extended to above 100dB by programming a non linear

response curve that matches the response of the human eye.

Features

f Video or snapshot operations

f Programmable pixel clock, inter-frame and inter-line delays.

f Programmable partial or full frame integration

f Programmable gain and individual color gain adjustment

f Horizontal & vertical sub-sampling (2:1 & 4:2)

f Programmable digital video response curve

f Windowing

f External snapshot trigger & event synchronisation signals

f Auto black level compensation

f Flexible digital video read-out supporting programmable:

- polarity for synchronisation and pixel clock signals

- leading edge adjustment for horizontal synchronization

f Programmable via 2 wire I

f Power on reset & power down mode

Applications

f Dual Mode Camera

f Digital Still Camera

f Security Cameras

f Machine Vision

f Automotive

Key Specifications

Array Format

Total:

664H x 504V

Active:

648H x 488 V

Effective Image Area

Total:

4.98 mm x 3.78 mm

Active: 4.86 mm x 3.66 mm

Optical Format

1/3“

Pixel Size

7.5

µm x 7.5µm

Video Outputs

8,10 & 12 Bit Digital

Frame Rate

30 frames per second

Dynamic Range

62dB in linear mode

110dB in non linear mode

Electronic Shutter

Rolling reset

FPN

0.1%

PRMU

1.5%

Sensitivity

2.7 V/lux.s

Quantum Efficiency

27%

Fill Factor

47%

Color Mosaic

Bayer pattern

Package

48 CLCC

Single Supply

3.3 V +/-10%

Power Consumption

120 mW

Operating Temp

APS Array

Vertical

Horizontal

Master Timer

Timing

Timing

Row Address

Gen

Clock Gen

POR

I

Register Bank

Row Address

Decoder

Reset

Gen

12 Bit A/D

R

G

B

AMP

Gain

Control

mux

d[11:0]

pclk

hsync

vsync

Serial I/F

sda

sclk

sadr

Power

Control

pdwn

snapshot

extsync

Controller

(sequencer)

mclk

oe

reset

Overall Chip Block Diagram

May 2002