VV5300

On-chip 8-bit successive approximation analogue-to-digital convertor with 8-wire, 4-wire parallel and two serial data output modes.

The default image format is 160x 120. Extra border pixel/lines can be enabled to give an image size of 164 x 124. Digital pixel data coding assigns 10H as black and F0H as white. Other codes specify line sync and frame sync periods.

The VV5300 frame rates can be integer multiples of the mains supply frequencies used worldwide, i.e. 50Hz and 60Hz. This ensures reduced flicker operation of the sensor All VV5300 operating modes and system status information can be accessed via a two wire bidirectional serial interface.

VV5300 features an automatic electronic exposure algorithm that enables the use of a single fixed-aperture lens. Automatic gain control enhances operation under low light conditions.

Automatic black level control ensures consistent picture quality across the whole range of operating conditions. Extensive use of automated operation and on chip references means that only a small number of passive components are needed to realise a complete video camera.

On-chip voltage references simplifies the support circuitry and maintains device stability over a wide range of operating conditions.

VV5300 is a highly-integrated CMOS image sensing device. In addition to a 160 x 120 pixel image sensor array, the device includes on-chip circuitry to drive and sense the array.

The output stage of the sensor VV5300 contains a successive approximation circuit which performs analogue-todigital conversion of the photodiode array to produce 8-bit or 4-bit pixel data.

The primary image size of VV5300 is 160 x 120 but border pixels/ lines can be enabled to give an effective image size of 164 x 124.

VV5300 features electronic exposure and gain control over a wide range, enabling the use of a single fixed-aperture lens.

A bi-directional 2-wire serial communications interface of VV5300 allows the device to be configured and its operating status monitored. The status information may also be multiplexed onto the digital output bus.