2002 National Semiconductor Corporation www.national.com
ADVANCE INFORMATION
LM9637 Monochrome CMOS Image Sensor VGA 68 FPS
General Description
The LM9637 is a high performance, low power, 1/4" VGA CMOS
Active Pixel Sensor capable of capturing monochrome still or
motion images and converting them to a digital data stream.
Excellent image quality is achieved by integrating a high perfor-
mance analog signal processor comprising of a high speed 10
bit A/D convertor, fixed pattern noise elimination circuits and a
programmable gain amplifier. The offset and black level can be
automatically adjusted on chip using a full loop black level com-
pensation 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
f
Master and slave mode operation
f
Progressive scan read out with horizontal and vertical flip
f
Programmable Exposure:
- Master clock divider
- Inter row delay
- Inter frame delay
- Partial frame integration
f
Programmable gain amplifier
f
Full automatic servo loop for black level & offset adjustment
on each gain channel
f
Horizontal & vertical sub-sampling (2:1 & 4:2) with averaging
f
Windowing
f
Programmable pixel clock, inter-frame and inter-line delays
f
I
2
C compatible serial control interface
f
Power on reset & power down mode
Applications
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Security Camera
f
Machine Vision
f
Barcode Scanners
f
Biometrics
Key Specifications
Array Format
Total: 488 x 672
Active: 488 x 648
Effective Image Area
Total: 2.93mm x 4.03mm
Active: 2.93mm x 3.89mm
Optical Format
1/4"
Pixel Size
6.0
m x 6.0
m
Video Outputs
8 & 10 Bit Digital
Frame Rate
68 frames per second
Dynamic Range
57 dB
Electronic Shutter
Rolling Reset
FPN
0.5%
PRMU
1.7%
Sensitivity
2.40 volts/lux.s
Fill Factor
49%
Micro Lens
none
Package
32 LCC
Single Supply
3.0V +/-10%
Power Consumption
130mW
Operating Temp
-10
o
C to 50
o
C
Overall Chip Block Diagram
Column CDS
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Amp
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pclk
hsync
vsync
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10 bit A/D
snapshot
extsync
APS Array
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C Compatible
Serial I/F
Register
Bank
sclk sda
sadr
POR
Power
clk gen
Control
mclk
pwd
resetb
Master Sensor Controller
+/-
Figure 1. Chip Block Diagram
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MAY 2002
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications
.
www.national.com
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NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and whose failure to perform when
properly used in accordance with instructions for use pro-
vided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support
device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.
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Ordering Information (Product, Samples & Design In Tools)
Item
Description
Part Number
LM9637
LM9637 VGA, 68 frames per second, monochrome CMOS image sensor.
This sensor is shipped in a 48 pin ceramic leadless chip carrier package.
Minimum order quantity, one tray of 176 units.
LM9637BCEA
Sample Kit
This kit includes 5 LM9637 samples and complete product datasheet.
LM9637SAMPLE-KIT
Headboard
This is a small PCB that houses the LM9637 sensor together with all neces-
sary discrete components. The headboard is supplied with C-MOUNT lens
block (lens not included) and documentation. M12 Lens mounts (not
included) can also be mounted on this board.
LM9637HEADBOARD
Evaluation Kit
The evaluation kit is a complete software/hardware solution designed to
give the system designer a complete raw data evaluation toolset for the
LM9637 sensor.
The kit contains a LM9637 headboard (see above), C-MOUNT lens, capture
and display board, power supply, cables, SNAPS EVAL version Windows
application software and documentation.
LM9637EVAL-KIT
1/4" Lens Kit
The 1/4" lens kit includes four 1/4" M12 lenses and an M12 mount that can
be attached to any LM9637 headboard (see above). All lenses in the kit
have been tested by National Semiconductor and are supplied with docu-
mentation and test data.
LM96-1/4-LENS-KIT
PDF 
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