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VV6850

High resolution CMOS Image Sensor with support for external FPN cancellation and serial interface control, available in colour (6850) and monochrome (5850) versions

Vision 

VISION V V 6850 & 5850 Sensors: Product Datasheet Revision 1.0

SENSOR ARCHITECTURE

The VV6850 image sensor comprises an array of 1016 (vertical, ‘lines’) by 804 (horizontal) active

photodiode cells feeding into a row of column source followers at the top of the pixel array. These

columns are then in turn multiplexed on to four output channels, and finally onto the AVO output.

Exposure, that is pixel integration time, is controlled by a ‘Reset Vertical’ shift register with pixel

readout controlled by the ‘Read Vertical’ and ‘Horizontal’ shift registers.

The first (‘bottom’) line of the array is used internally, and is not read out. The next 6 lines are black

reference lines. Then there are 8 colour characterisation lines, 992 valid video lines and 8 more

colour characterisation lines. At the top of the pixel array there is one more extra line which is not

read out. The outer two columns on the left and right sides of the pixel array are also internal refer-

r y ences, and not read out. Thus the usable image area of the 1016 x 804 array is 992 x 800 pixels.

Black

Reference

8x8 pixels

TOP

Horizontal Shift Register - Column Select

a

Column Amplifiers & Sample/hold

i n LS

O/P

Stage

AVO

lFI, FR

i

mPixel Array

(804x1016)

re

P

First Pixel to be read out

AVORef

BG

GR

‘Bayer’

Colourisation

135

024

‘Line scan’ (0 - 802; 1 - 803)

1013

2-Even

} 1-Odd

1-Even

Second line

} 0-Odd

0-Even

First line

4

cd24011a.fm

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