Document
Omni ision TM
Advanced Information Preliminary Datasheet
OV7660/OV7161 CMOS VGA (640x480) CAMERACHIPTM with OmniPixelTM Technology
General Description
The OV7660/OV7161 CAMERACHIPTM is a low voltage CMOS image sensor that provides the full functionality of a single-chip VGA camera and image processor in a small footprint package. The OV7660/OV7161 provides full-frame, sub-sampled or windowed 8-bit images in a wide range of formats, controlled through the Serial Camera Control Bus (SCCB) interface.
This product has an image array capable of operating at up to 30 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 CAMERACHIPs use proprietary sensor technology to improve image quality by reducing or eliminating common lighting/electrical sources of image contamination, such as fixed pattern noise (FPN), smearing, blooming, etc., to produce a clean, fully stable color image.
Features
• High sensitivity for low-light operation
• Low operating voltage for embedded portable applications
• Standard SCCB interface
• VGA, QVGA, QQVGA, CIF, QCIF, QQCIF and windowed outputs with Raw RGB, RGB (GRB 4:2:2), YUV (4:2:2) and YCbCr (4:2:2) formats
• VarioPixelTM method for sub-sampling formats
• Automatic image control functions including: Automatic Exposure Control (AEC), Automatic Gain Control (AGC), Automatic White Balance (AWB), Automatic Brightness Control (ABC), and Automatic Black-Level Calibration (ABLC)
• Image quality controls including color saturation, hue, gamma, sharpness (edge enhancement), and anti-blooming
Ordering Information
Product OV07660-KL6A (Color) OV07161-KL6A (B&W with microlens)
Package CSP-22 CSP-22
Applications
• Cellular and Picture Phones • Toys • PC Multimedia • Digital Still Cameras
Key Specifications
Array Element (VGA)
Digital Core
Power Supply
Analog
I/O
Power
Active
Requirements
Standby
Temperature Operation
Range Stable Image
Output Formats (8-bit)
Lens Size
Lens Chief Ray Angle
VGA, CIF,
Max Image QCIF, QQCIF
Transfer Rate
QVGA, QQVGA
Sensitivity
S/N Ratio
Dynamic Range
Scan Mode
Electronics Exposure
Gamma Correction
Pixel Size
Dark Current
Well Capacity
Fixed Pattern Noise
Image Area
Package Dimensions
664 x 492 1.8VDC 2.45V to 2.8V 2.5V to (VDD-A+0.3V) 40 mW without loading < 10 µA -20°C to 80°C -10°C to 60°C • YUV/YCbCr 4:2:2 • RGB 4:2:2 • Raw RGB Data 1/5" ~20°
30 fps
60 fps
1.0 V/Lux-sec > 48 dB (AGC off, Gamma=1) > 72 dB Progressive Up to 510:1 (for selected fps) 0.45/0.55/1.00 4.2 µm x 4.2 µm 30 mV/s at 60°C 35 K e < 0.03% of VPEAK-TO-PEAK 2.76 mm x 2.05 mm 4155 µm x 3975 µm
Figure 1 OV7660/OV7161 Pin Diagram
A1 AVDD
A2 AGND
A3 SIO_C
A4 D1
A5 D3
B1 VREF
B2 PWDN
B3 SIO_D
B4 D0
B5 D2
C1 VSYNC
C2 DVDD
OV7660/OV7161
D1 HREF
D2 PCLK
D3 RESET
D4 D7
D5 D5
E1 DOVDD
E2 XCLK1
E3 DOGND
E4 D6
E5 D4
Version 1.91, January 24, 2005
Proprietary to OmniVision Technologies
1
OV7660/OV7161 CMOS VGA (OmniPixel™) CAMERACHIP™
Omni ision
Functional Description
Figure 2 shows the functional block diagram of the OV7660/OV7161 image sensor. The OV7660/OV7161 includes: • Image Sensor Array • Analog Signal Processor • A/D Converters • Digital Signal Processor (DSP) • Output Formatter • Timing Generator • SCCB Interface • Digital Video Port
Figure 2 Functional Block Diagram
Analog Processing
G
R B
A/D
DSP
Formatter
Video Port
D[7:0]
Row Select
Column Sense Amp
Image Array (664 x 492)
Exposure/Gain Detect
White Balance Detect
Registers
Clock XCLK1
Video Timing Generator
Exposure/Gain Control
HREF PCLK VSYNC RESET PWDN
White Balance Control
SCCB Interface
SIO_C SIO_D
2 Proprietary to OmniVision Technologies
Version 1.91, January 24, 2005
Omni ision
Functional Description
Image Sensor Array
The OV7660/OV7161 sensor has an active image array of 640 columns x 480 rows (307,200 pixels). Figure 3 shows a cross-section of the image sensor array.
Figure 3 Image Sensor Array
Microlens
Glass
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
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.
Blue
Green
Red
Timing Generator
In general, the timing generator controls the following functions: • Array control and frame generation (7 different
format outputs) • Internal timing signal generation and distribution • Frame rate timing • Automatic Exposure Control (AEC) • External timing outputs (VSYNC, HREF/HSYNC, and
PCLK)
Digital Signal Processor (DSP)
This block controls th.