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ADVANCE INFORMATION

LM9638 Monochrome CMOS Image Sensor SXGA 18 FPS

General Description

The LM9638 is a high performance, low power, 1/2" SXGA

CMOS Active Pixel Sensor capable of capturing monochrome

still or motion images and converting them to a digital data

stream.

Mega-pixel class image quality is achieved by integrating a high

performance analog signal processor comprising of a high

speed 10 bit A/D convertor, fixed pattern noise elimination cir-

cuits and a programmable gain amplifier. The offset and black

level can be automatically adjusted on chip using a full loop

black level compensation circuit.

Furthermore, a programmable smart timing and control circuit

allowing the user maximum flexibility in adjusting integration

time, active window size, gain, frame rate. Various control, tim-

ing and power modes are also provided.

Features

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Video and snapshot operation

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Progressive scan read out with horizontal and vertical flip

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Programmable Exposure:

- Master clock divider

- Inter row delay

- Inter frame delay

- Partial frame integration

f

Programmable gain amplifier

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Full automatic servo loop for black level & offset adjustment

on each gain channel

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

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Windowing

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

f

f

Power on reset & power down mode

Applications

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Security Camera

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Machine Vision

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Barcode Scanner

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Biometrics

Key Specifications

Array Format

Total: 1032 x 1312

Active: 1032 x 1288

Effective Image Area

Total: 6.30mm x 7.83mm

Active: 6.27mm x 7.81mm

Optical Format

1/2"

Pixel Size

6.0mm x 6.0mm

Video Outputs

8 & 10 Bit Digital

Frame Rate

18 frames per second

Dynamic Range

57 dB

Shutter

Rolling reset

FPN

0.5%

PRMU

1.7%

Sensitivity

2.40 volts/lux.s

Fill Factor

49%

Micro Lens

none

Package

48 LCC

Single Supply

3.0V +/- 10%

Power Consumption

150mW

Operating Temp

Overall Chip Block Diagram

Column CDS

Amp

d[9:0]

pclk

hsync

vsync

10 bit A/D

snapshot

extsync

APS Array

Serial I/F

Register

Bank

sclk sda

sadr

POR

Power

clk gen

Control

mclk

pwd

resetb

Master Sensor Controller

+/-

May 2002