LM9638 Monochrome CMOS Image Sensor SXGA 18 FPS
ADVANCE INFORMATION
May 2002
LM9638 Monochrome CMOS Image Sensor SXGA 18 FPS
General Description
The LM9638 is a high performance, low power, 1/2" SX GA
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.
Applications
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Security Camera
Machine Vision
Barcode Scanner
Biometrics
Key Specifications
Array Format
Effective Image Area
Optical Format
Pixel Size
Video Outputs
Frame Rate
Dynamic Range
Shutter
FPN
PRMU
Sensitivity
Fill Factor
Micro Lens
Package
Single Supply
Power Consumption
Operating Temp
Total: 1032 x 1312
Active: 1032 x 1288
Total: 6.30mm x 7.83mm
Active: 6.27mm x 7.81mm
1/2"
6.0mm x 6.0mm
8 & 10 Bit Digital
18 frames per second
57 dB
Rolling reset
0.5%
1.7%
2.40 volts/lux.s
49%
none
48 LCC
3.0V +/- 10%
150mW
-10
o
C to 50
o
C
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
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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
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C compatible serial control interface
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Power on reset & power down mode
Overall Chip Block Diagram
sclk sda
APS Array
Row Address
Decoder
Horizontal
Register
+/-
Amp
sadr
resetb
pwd
Power
Control
mclk
Register
Bank
I
2
C Compatible
Serial I/F
POR
clk gen
snapshot
extsync
Master Sensor Controller
Black Level
Compensation
Digital Video
Framer
d[9:0]
pclk
hsync
vsync
Column CDS
10 bit A/D
茫
2002 National Semiconductor Corporation
www.national.com
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