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OV7950 product brief
available in a lead-free package
ultra-compact, high-performance security CameraChip sensor
The OV7950 CameraChipTM sensor is developed specifically for NTSC CCTV/video monitoring security and surveillance applications. It is a highly integrated video camera that packs a high level of functionality. At only 1/4 inch format and using a 3.3V DC power supply, the OV7950 color image sensor is ideal for applications requiring a small footprint, low light, low power consumption, and high performance. The OV7950 supports NTSC composite video output and can directly interface with a TV monitor or another device with a 75 Ohm composite video loading. The OV7950 excels in low light conditions and can operate within a temperature range from -20C to 70C.
Key features of the OV7950 include a new windowing feature which allows customers to adjust their camera setup by moving the sensitive area of the camera in either vertical or horizontal directions. The OV7950's Genlock function allows the synchronization of two or more video sources. This enables the development of very affordable closed-circuit security monitoring systems that are very easy to set up, making the OV7950 a very suitable product for consumer and small business solutions. In addition, the new OV7950 image sensor features a dual dynamic overlay function, allowing for both dynamic and static visual aid layer (text or graphics) within the image. These are especially useful for text features in security camera systems to identify each camera and location individually.
applications
security/surveillance cameras video conferencing video phones video e-mail toys fingerprint equipment medical and dental equipment
OV7950
ordering information
OV07950-C10A
(color, NTSC, CLCC-48)
OV07451-C10A
(b&w, NTSC, CLCC-48)
product features
OmniPixel2 TM technology 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 extremely low dark current for high temperature applications defective pixel correction
product specifications
array size:
656 x 492
optical format: 1/4" S/N ratio: 48 dB dynamic range: 60 dB pixel size: 6.0 m x 6.0 m dark current: 10 mW/s @60C fixed pattern noise:
0.22% of V PEAK TO PEAK 14.22 mm x 14.22 mm -20C to +70C
power supply:
analog/ADC/10: 3.3 VDC 5% digital core: 1.8 VDC 5% 200 mW
power consumption: image area:
4.080 mm x 4.276 mm OV7950: 1/60 s - 20 s OV7451: 1/30 s - 20 s
exposure time range:
package dimensions: temperature range:
functional block diagram
column sample/hold row select
AMP
ADC
DSP
overlay
video encoder
+CVO DAC
image array
gain control
DSP control
overlay control SPI interface
CS SCK ESO ESI
timing/clock generator
register bank
SCCB interface
CS0* CS1*
XCLK1
XCLK2
PWDN
RESET
OVLEn
SIO_D
OVL2
FSIN
VS
SIO_C
7950_PB_001
1341 Orleans Drive Sunnyvale, CA 94089
tel: +1 408 542 3000 fax: +1 408 542 3001 www.ovt.com
OmniVision reserves the right to make changes to their products or to discontinue any product or service without further notice. OmniVision, the OmniVision logo and Omnipixel are registered trademarks of OmniVision Technologies, Inc. CameraChip and OmniPixel2 are trademarks of OmniVision Technologies, Inc. All other trademarks are the property of their respective owners.
Version 2.6, September, 2007

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