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OmniVision Technologies
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OV7950 Datasheet Preview

OV7950 Datasheet

(OV7451 / OV7950) CMOS Analog NTSC CameraChip

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OV7950 pdf
Omniwww.DataSheet4U.com
ision
®
Advanced Information
Preliminary Datasheet
OV7950/OV7451 CMOS Analog NTSC CAMERACHIPTM with OmniPixel® Technology
General Description
The OV7950 (color) and OV7451 (black & white) single
chip CMOS CAMERACHIPSTM are designed to provide a
high level of functionality for all applications requiring a
small footprint, low voltage, low power consumption and
high performance color or B&W video camera.
Both devices support NTSC composite video output and
can directly interface with a VCR TV monitor or other
device with 75 ohm loading.
Note: The OV7950/OV7451 is available
Pb in a lead-free package.
Features
• Single chip 1/4" format video camera
• Composite video (NTSC) output
• High sensitivity
• Automatic exposure/gain with 16 zone control
• Horizontal and vertical windowing capability
• Auto white balance control
• Aperture/Gamma correction
• 50/60 Hz flicker cancellation
• External frame sync capability (Genlock)
• SPI/EEPROM used to control overlay and set other
customer variables
• Two sets of dynamic overlay controls
• Master/slave compatible Serial Camera Control Bus
(SCCB) control interface for register programming
• Low power consumption
• Extreme low dark current for high temperature
applications
• Defective pixel correction
Ordering Information
Product
Package
OV07950-C10A (Color, NTSC)
CLCC-48
OV07451-C10A (B&W with microlens, NTSC) CLCC-48
Applications
• Security/Surveillance cameras
• Video Conferencing
• Video phones
• Video e-mail
• Toys
• Finger print equipment
• Medical and dental equipment
Key Specifications
Array Size
Analog/ADC/IO
Power Supply
Digital Core
Power Consumption
Image Area
Exposure
Time Range
OV7950
OV7451
Optical Format
S/N Ratio
Dynamic Range
Pixel Size
Dark Current
Fixed Pattern Noise
Package Dimensions
656 x 492
3.3 VDC + 5%
1.8 VDC + 5%
200 mW
4.080 mm x 3.102 mm
1/60s - 20 µs
1/30s - 20 µs
1/4"
48 dB
49 dB
6.0 µm x 6.0 µm
10 mW/s @ 60°C
0.22% of VPEAK-TO-PEAK
14.22 mm x 14.22 mm
Figure 1 OV7950/OV7451 Pin Diagram (Top View)
30 29 28 27 26 25 24 23 22 21 20 19
RES 31
DOVDD 32
PCLK 33
NC 34
NC 35
NC 36
NC 37
NC 38
NC 39
NC 40
NC 41
NC 42
OV7950/OV7451
18 VS
17 ADGND
16 ADVDD
15 SCK
14 ESO
13 CS
12 ESI
11 FSIN
10 RESET
9 OVL2
8 OVLEn
7 PWDN
43 44 45 46 47 48 1 2 3 4 5 6
Version 2.5, February 28, 2006
Proprietary to OmniVision Technologies
1



OmniVision Technologies
OmniVision Technologies

OV7950 Datasheet Preview

OV7950 Datasheet

(OV7451 / OV7950) CMOS Analog NTSC CameraChip

No Preview Available !

OV7950 pdf
OV7950/OV7451 CMOS Analog NTSC (OmniPixel®) CAMERACHIP
Omni ision
www.DaFtauSnhecett4ioU.ncoaml Description
This section describes the various functions of the OV7950/OV7451. Refer to Figure 2 for the functional block diagram of the
OV7950/OV7451.
Figure 2 Functional Block Diagram
Column Sample/Hold
AMP
ADC
DSP
Overlay
Video
Encoder
DAC
+CVO
Row
Select
Image Array
(656 x 492)
Gain
Control
DSP
Control
Overlay
Control
SPI
Interface
CS
SCK
ESO
ESI
Timing/Clock Generator
Register
Bank
SCCB
Interface
CS0*
CS1*
Video Standards
NTSC TV standards are implemented and available as
output in the OV7950/OV7451 CAMERACHIPS. Note that
the accuracy and stability of the crystal clock frequency is
important to avoid unwanted color shift in the TV video
system. OmniVision recommends using a 12.27 MHz
crystal when utilizing the OV7950/OV7451 CAMERACHIP.
Video Format
The OV7950/OV7451 CAMERACHIP supports Composite
(CVBS) video format only. Composite signals are
generated from the built-in TV encoder. The OV7451 only
outputs the luminance signal.
Image Sensor Functions
White Balance
The function of white balance in the OV7950/OV7451
CAMERACHIP is to adjust and calibrate the image device
sensitivity on the primary (RGB) colors to match the color
cast of the light source. The Auto White Balance (AWB)
can be enabled or disabled by register control. If the AWB
is enabled, the image sensors continuously perform white
balancing.
Mirror and Vertical Flip
The OV7950/OV7451 provides horizontal mirror and
vertical flip functions. These functions can be turned ON
or OFF via register settings.
2 Proprietary to OmniVision Technologies
Version 2.5, February 28, 2006


Part Number OV7950
Description (OV7451 / OV7950) CMOS Analog NTSC CameraChip
Maker OmniVision Technologies
Total Page 30 Pages
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