H7440HS-High Performance 1/4” CMOS Surveillance Sensor

产品概述
H7440HS is a high performance surveillance class CMOS image sensor, which supports CVBS (Composite Video Broadcast Signal) analog/digital output, works with a single voltage supply and under wide temperature range, provides the full functionality of a single chip camera. It provides clear sharp and true color video/image automatically or via the real time control of the Serial Camera Control Bus (SCCB) interface if works with a backend DSP controller.

H7440HS has an image array capable of operating at 60 frames per second in full resolution. It is ideal for applications requiring small footprint, simple voltage supply, low power consumption,superior low light sensitivity, and low cost color camera.

结构
H7440HS has an active image array of 733(H)x493(V) pixels. The timing generator outputs control signals to access the rows and columns of the image array, pre‐charging and sampling the rows of the array in series, and reading out the signal in sequence. On chip CDS (Correlated Double Sampling) circuits cancel the fixed pattern noise efficiently. AGC (Automatic Gain Control) and AWC (Automatic White Balance) block are used to control the gain and white balance under different light condition and color temperature to get a highly quality image. The digital image signals are processed in the ISP block, including the interpolation, bad pixel correction, color correction, gamma correction, sharpness, contrast and saturation control, data format conversion etc. The digital image data can be output via the programming of the output interface.

A high efficient video encoder and video DAC (Digital to Analog Converter) are implemented on chip to output the standard CVBS analog video signal.

应用
Security and surveillance cameras
Automotive
Digital still cameras and camcorders
Notebook and desktop PC cameras

特征
Single  chip  1/4”  Sensor  with  NTSC  and
PAL CVBS output
Support 10 bit digital video output
Outstanding high temperature stability
Superior low light performance
Master/Slave  compatible  serial  camera
control  bus  (SCCB)  control  interface  for

register programming
Automatic exposure/gain/white balance
Low power consumption
Support mirror control with I/O
Support programmable parking line
Support IR driver control switch

主要规格
Optical format: 1/4‐inch
Array size: 733H x 493V
Output format: CVBS(PAL/NTSC),  RAW  RGB,  YUV422,
CCIR601, CCIR656
Shutter type:Electronic rolling shutter
Pixel size: 5um (H)*5.6um (V)
Power supply:Analog: 3.0V (nominal)
Core: 1.5V (nominal)
I/O: 1.8V ~ 3.0V (nominal)
Sensitivity: 17V/Lux*s

S/N ratio:45dB
Dynamic range: 60dB
Power consumption:65mA@3.0V,  CVBS  output  single  power
supply
60uA@standby mode
Dark current: 5mV/s@40℃
Fixed pattern noise: <0.1%
Lens chief ray angle: 0°
Package dimensions:42 Ball CSP

H7440HS框图
H7440HS框图

附件:H7440HS_datasheet

申明:由于产品版本升级或其他原因,本文档内容会不定期进行更新.除非另有约定,本文档仅作为 使用指导,本文档中的所有陈述,信息和建议不构成任何明示或暗示的担保.

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