ASX340 datasheet(9/78 Pages) ETC2

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PDF: 171981479/Source: 8304342517

Aptina reserves the right to change products or specifications without notice.

ASX340/MT9V139_DS Rev. C Pub. 3/11 EN

ASX340/MT9V139: 1/4-Inch Color CMOS NTSC/PAL Digital Image Sensor

General Description

Aptina Confidential and Proprietary

Preliminary

General Description

The Aptina® ASX340/MT9V139 is a VGA-format, single-chip active-pixel digital image

sensor for surveillance applications. It captures high-quality color images at VGA resolu-

tion and outputs NTSC or PAL interlaced composite video.

The VGA image sensor features Aptina’s breakthrough low-noise imaging technology

that achieves superior image quality (based on signal-to-noise ratio and low-light sensi-

tivity) while maintaining the inherent size, cost, low power, and integration advantages

of Aptina's advanced active pixel process technology.

The ASX340/MT9V139 is a complete camera-on-a-chip. It incorporates sophisticated

camera functions on-chip and is programmable through a simple two-wire serial inter-

face or by an attached SPI EEPROM or Flash memory that contains setup information

that may be loaded automatically at startup.

The ASX340/MT9V139 performs sophisticated processing functions including color

recovery, color correction, sharpening, programmable gamma correction, auto black

reference clamping, auto exposure, 50Hz/60Hz flicker detection and avoidance, lens

shading correction, auto white balance (AWB), and on-the-fly defect identification and

correction.

The ASX340/MT9V139 outputs interlaced-scan images at 60 or 50 Fields per Second,

supporting both NTSC and PAL video formats. The image data can be output on one or

two output ports:

• Composite analog video (single-ended and differential output support)

• Parallel 8-, 10-bit digital

Architecture

Internal Block Diagram

Figure 1:

Internal Block Diagram

Image Flow Processor

Color & Gamma Correction

Color Space Conversion

Edge Enhancement

Camera Control

AWB

¼” VGA ROI

@ 60 frames per sec.

640 x 480 Active Array

SPI & 2W I/F

Interface

SPI

2. 8V

1.8V

Two-Wire I/F

Overlay

Graphics

Generation

VideoEncoder

DAC

NTSC /

PAL

BT -656

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