TH7888A Datasheet, PDF (2/16 Pages) ATMEL Corporation – Area Array CCD Image Sensor (1024 x 1024 Pixels with Antiblooming)

TH7888A
DESCRIPTION
TH7888A is especially designed for high data rate applications (up to 30 pict /s in 1024x1024 format progressive scan) in
medical and industrial fields.
This area array image sensor consists of a 1024 x 1024 pixels (14 mm x 14 mm) image zone associated to a memory zone
(masked with optical shield).
In order to increase data rate, it is provided 2 separate outputs that can be used for parallel readout. (readout frequency up
to 20 MHz / output leading to a total readout frequency of 40 MHz). These two outputs allow 3 readout modes (single or
dual port readout).
TH7888A is designed with antiblooming structure providing electronic shutter capability.
Moreover the 2 x 2 binning mode is available on this sensor. In that case, the image size is 512 x 512 with 28 mm x 28 mm
pixels.
TH7888A package is sealed with a specific anti-reflective window optimized in 400-700 nm spectrum bandwidth.
OPTIONS : the device can be delivered with integrated low power Peltier cooler in order to improve sensor performances in
high temperature environments (typically + 50°C).
FUNCTIONAL DIAGRAM
Figure 1 gives the general sensor organization.
Extra dark lines are provided for use as dark references or for smearing digital correction.
Extra dark pixels are provided for line dark reference clamping.
Each frame is made of 1056 video lines :
n 1 dummy line
n 12 useful dark reference lines (with optical shield)
n 3 isolation lines
n 1024 useful lines
n 3 isolation lines
n 12 dark reference lines (with optical shield)
n 1 dummy line
Each video line is made of 546 or 1058 elements, depending on readout mode (single or dual port modes):
n 12 inactive prescan elements
n 1 isolation element
n 16 useful dark references (with optical shield)
n 5 isolation elements
n 512 or 1024 useful video pixels
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