2

TH7888A

1999A–IMAGE–09/03

Figure 1. TH7888A General Sensor Organization

Functional Overview

Extra dark lines are provided for use as dark references or for smearing digital correc-

tion.

Extra dark pixels are provided for dark line reference clamping. Each frame consists of

1056 video lines:

•

1 dummy line

•

12 useful dark reference lines (with optical shield)

•

3 isolation lines

•

1024 useful lines

•

3 isolation lines

•

12 dark reference lines (with optical shield)

•

1 dummy line

Each video line is made up of 546 or 1058 elements, depending on the readout mode

(single or dual port mode):

•

12 inactive prescan elements

•

1 isolation prescan element

•

16 useful dark references (with optical shield)

•

5 isolation elements

•

512 or 1024 useful video pixels

1024 x 1024

Image Area

1024 x 1024

Memory Area

VA

VDR

VDD2

VOS2

VS2

VGS

VDR

VDD1

VOS1

VS1

VGS

Bi-directional Serial Register