OV7725CMOSDATASHEET机密文件

5星 · 超过95%的资源需积分: 48 109 浏览量更新于2023-03-03 评论 2 收藏 792KB PDF 举报

身份认证购VIP最低享 7 折!

领优惠券(最高得80元）

资源详情

资源评论

资源推荐

Version 1.4, December 17, 2007 OmniPixel2 and CameraChip are trademarks of OmniVision Technologies, Inc.

These specifications are subject to change without notice.

Advanced Information

Datasheet

OV7725 Color CMOS VGA (640x480) CAMERACHIP

Sensor

mni ision

with OmniPixel2

Technology

General Description

The OV7725 CAMERACHIP™ image sensor is a low

voltage CMOS device that provides the full functionality of

a single-chip VGA camera and image processor in a small

footprint package. The OV7725 provides full-frame,

sub-sampled or windowed 8-bit/10-bit images in a wide

range of formats, controlled through the Serial Camera

Control Bus (SCCB) interface.

This device has an image array capable of operating at up

to 60 frames per second (fps) in VGA with complete user

control over image quality, formatting and output data

transfer. All required image processing functions,

including exposure control, gamma, white balance, color

saturation, hue control and more, are also programmable

through the SCCB interface. In addition, OmniVision

sensors use proprietary sensor technology to improve

image quality by reducing or eliminating common

lighting/electrical sources of image contamination, such

as fixed pattern noise, smearing, blooming, etc., to

produce a clean, fully stable color image.

Features

• High sensitivity for low-light operation

• Standard SCCB interface

• Output support for Raw RGB, RGB (GRB 4:2:2,

RGB565/555/444) and YCbCr (4:2:2) formats

• Supports image sizes: VGA, QVGA, and any size

scaling down from CIF to 40x30

• VarioPixel

method for sub-sampling

• Automatic image control functions including:

Automatic Exposure Control (AEC), Automatic Gain

Control (AGC), Automatic White Balance (AWB),

Automatic Band Filter (ABF), and Automatic

Black-Level Calibration (ABLC)

• Image quality controls including color saturation,

hue, gamma, sharpness (edge enhancement), and

anti-blooming

• ISP includes noise reduction and defect correction

• Lens shading correction

• Saturation level auto adjust (UV adjust)

• Edge enhancement level auto adjust

• De-noise level auto adjust

• Frame synchronization capability

Ordering Information

Note: The OV7725 uses a lead-free

package.

Product Package

OV07725-VL1A (Color, lead-free) 28-pin CSP2

Applications

• Cellular and picture phones

•Toys

• PC Multimedia

• Digital still cameras

Key Specifications

Figure 1 OV7725 Pinout (Top View)

Array Size 640 x 480

Power Supply

Digital Core 1.8VDC +

10%

Analog 3.0V to 3.6V

I/O 1.7V to 3.3V

Power

Requirements

Active

120 mW typical

(60 fps VGA, YUV)

Standby < 20 µA

Temperature Range -20°C to +70°C

Output Format

8-bit

• YUV/YCbCr 4:2:2

• RGB565/555/444

• GRB 4:2:2

•Raw RGB Data

10-bit

•Raw RGB Data

Lens Size 1/4"

Lens Chief Ray Angle 25° non linear

Max Image Transfer Rate 60 fps for VGA

Sensitivity 3.8 V/(Lux

• sec)

S/N Ratio 50 dB

Dynamic Range 60 dB

Scan Mode Progressive

Electronic Exposure Up to 510:1 (for selected fps)

Pixel Size 6.0 µm x 6.0 µm

Dark Current 40 mV/s

Well Capacity 26 Ke

Fixed Pattern Noise < 0.03% of V

PEAK-TO-PEAK

Image Area 3984 µm x 2952 µm

Package Dimensions 5345 µm x 5265 µm

ADVDD

RSTB

VREFH

OV7725

FSIN

SCL

ADGND

VREFN

AGND

AVDD

SDA

PWDN

DOVDD

XCLK

DOGND

HREF

VSYNC

DVDD

PCLK

7725CSP_DS_001

Functional Description

Version 1.4, December 17, 2007 Proprietary to OmniVision Technologies, Inc. 3

mni ision

Image Sensor Array

The OV7725 sensor has an image array of 664 x 490

pixels for a total of 325,360 pixels, of which 640 x 480

pixels are active (307,200 pixels). Figure 3 shows a

cross-section of the image sensor array.

Figure 3 Image Sensor Array

Timing Generator

In general, the timing generator controls the following

functions:

• Array control and frame generation

• Internal timing signal generation and distribution

• Frame rate timing

• Automatic Exposure Control (AEC)

• External timing outputs (VSYNC, HREF/HSYNC, and

PCLK)

Analog Signal Processor

This block performs all analog image functions including:

• Automatic Gain Control (AGC)

• Automatic White Balance (AWB)

A/D Converters

After the Analog Processing block, the bayer pattern Raw

signal is fed to a 10-bit analog-to-digital (A/D) converter

shared by G and BR channels. This A/D converter

operates at speeds up to 12 MHz and is fully synchronous

to the pixel rate (actual conversion rate is related to the

frame rate).

In addition to the A/D conversion, this block also has the

following functions:

• Digital Black-Level Calibration (BLC)

• Optional U/V channel delay

• Additional A/D range controls

blue

green

microlens

glass

microlensmicrolens

red

7725CSP_DS_003

In general, the combination of the A/D Range Multiplier

and A/D Range Control sets the A/D range and maximum

value to allow the user to adjust the final image brightness

as a function of the individual application.

Test Pattern Generator

The Test Pattern Generator features the following:

• 8-bar color bar pattern

• Shift "1" in output pin

Digital Signal Processor (DSP)

This block controls the interpolation from Raw data to

RGB and some image quality control.

• Edge enhancement (a two-dimensional high pass

filter)

• Color space converter (can change Raw data to RGB

or YUV/YCbCr)

• RGB matrix to eliminate color cross talk

• Hue and saturation control

• Programmable gamma control

• Transfer 10-bit data to 8-bit

Image Scaler

This block controls all output and data formatting required

prior to sending the image out. This block scales

YUV/RGB output from VGA to CIF and almost any size

under CIF.

Digital Video Port

drive current

and can be adjusted as a function of the customer’s

SCCB Interface

The Serial Camera Control Bus (SCCB) interface controls

the C

AMERACHIP sensor operation. Refer to OmniVision

Technologies Serial Camera Control Bus (SCCB)

Specification for detailed usage of the serial control port.

剩余43页未读，继续阅读

强哥乾乾

2014-04-13

参加飞思卡尔智能车比赛用的，很有帮助

rickliu74

粉丝: 0
资源: 8

会员权益专享

OV7725 CMOS DATA SHEET 机密文件

评论8

会员权益专享

最新资源

OV7725 CMOS DATA SHEET 机密文件

评论8

OV7725资料和源代码

OV7725 Datasheet

OV7725的datasheet

ov7670和ov7725区别

ov9281 datasheet

摄像头ov7725和ov7670区别

FPGA OV7725 HDMI

ov7725与ov7670区别

ov5640和ov7725的差别

zynq驱动ov7725

OV2640、OV7670、OV7725的区别？

Ov7725.map

ov7725中文资料

如何用stm32驱动ov7725

ov7725 颜色识别

ov50c40 datasheet

ov7725摄像头设计

ov7725摄像头图像识别

ov7725的freertos项目

stm32控制ov7725寻迹代码

会员权益专享

最新资源