OV7670 vs OV2640 Which one is better?

The OV7670 CAMERACHIP^TM 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 OV7670 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.

The OV2640  CAMERACHIP^TM is a low voltage CMOS image sensor that provides the full functionality of a single-chip  UXGA  (1632x1232) camera and image processor in a small footprint package. The OV2640  provides full-frame, sub-sampled, scaled, or windowed 8-bit/10-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 15 frames per second (fps) in  UXGA resolution 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, white pixel canceling, noise-canceling  , and more, are also programmable through the SCCB interface. The OV2640  also includes a compression engine  for increased processing power  . In addition, OmniVision CAMERACHIPS  uses proprietary sensor technology  to improve image quality by reducing or eliminating common lighting/electrical sources of image contamination, such as fixed pattern noise, smearing, etc., to produce a clean, fully stable color image.

OV7670 Functional Block Diagram

OV2640 Functional Block Diagram

 OV7670 Absolute Maximum Ratings

OV2640 Absolute Maximum Ratings

Features of the OV7670 include the following:

• High sensitivity for low-light operation

• Low operating voltage for embedded portable apps

• Standard SCCB interface compatible with I2C interface

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

RGB565/555/444), YUV  (4:2:2) and  YCbCr  (4:2:2)

formats

• Supports image sizes: VGA, CIF, and any size scaling

down from CIF to 40x30

• VarioPixel® method for sub-sampling

• Automatic image control functions include: 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

• Supports LED and flash strobe mode

• Supports scaling

• Lens shading correction

• Flicker (50/60 Hz) auto-detection

• Saturation level auto adjust (UV adjust)

• Edge enhancement level auto adjust

• De-noise level auto adjust

Features of the OV2640 include the following:

• High sensitivity for low-light operation

• Low operating voltage for embedded portable apps

• Standard SCCB interface

• Output support for Raw RGB. RGB (RGB565/555).

GRB422.  YUV (422/420) and  YCbCr (4:2:2) formats

• Supports image sizes: UXGA.  SXGA.  SVGA, and any

size scaling down from  SXGA to 40x30

• VarioPixeP 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,

gamma, sharpness (edge enhancement), lens

correction, white pixel canceling. noise canceling, and

50/60 Hz luminance detection

• Line optical black level output capability

• Video or snapshot operation

• Zooming. panning. and windowing functions

• Internal/external frame synchronization

• Variable frame rate control

• Supports LED and flash strobe mode

• Supports scaling

• Supports compression

• Embedded microcontroller

OV7670 Package Specifications

OV2640 Package Specifications