Description
The VL6522 is a VGA imager on chip (IOC), fabricated in a high performance 0.18 µm CMOS imaging process. The device produces a YUV 4:2:2 digital video data stream at up to 60(a) frames per second, and supports a microphone input.
Video and audio data is output via a USB2.0 high speed (480 Mbps) interface and allows simple interfacing to a host PC using generic audio and video class drivers under the appropriate operating system (Windows XP). Audio/video class compliance and vendor command sets allow development of other O/S drivers with relative ease.

FEATUREs
■ 640 x 480 (VGA) USB2.0 Web camera
■ RGB Bayer color filter array
■ 3.6 µm pixel size
■ Integrated 10-bit video ADC and processing
■ 16-bit audio pre-amplifier, Σ - Δ ADC and
   processing
■ USB2.0 high speed interface for data transfer
   and control
■ I2C master capability
■ USB audio class type 1 compliance
■ USB video YUV2 compliance
■ On-chip 3.3 V and 1.8 V regulators
■ Requires single 5 V supply
■ Minimum required PCB support components
■ Video format: 640 x 480 YUV2 up to 30 fps
■ Single 12 MHz input clock
■ Integrated image processing functions:
   – Automatic exposure
   – Automatic white balance
   – Dark level compensation
   – Lens shading correction
   – Image sub-sampling
   – Flicker cancellation
   – Sharpening
   – Gamma correction
   – RGB to YUV 422
■ Audio processing:
   – Audio class compliance PCM16
   – Preamplifier + ADC + processing
   – Audio rates of 8 kHz to 48 kHz, 16 bits
   – Audio dynamic range from mic. input to
      USB data output > 60 dB