IC-LF1401 Datasheet, PDF (8/10 Pages) List of Unclassifed Manufacturers – 128x1 Linear Image Sensor

iC-LF1401
128x1 LINEAR IMAGE SENSOR
Rev B1, Page 8/10
With more than 128 clock pulses until the next SI sig- output voltage tracks the voltage of the pixel 1 integra-
nal, pixel 1 is output without entering hold mode; the tion capacitor.
126 127 128 1
2
3
4
...
127 128 129 130 131
CLK
SI
V(AO)
Pix126 Pix127 Pix128 Pix1
Pix2
Pix3
...
Pix127 Pix128
Pix1
SNH
SNH128
NRCI
integration time
Figure 6: Clock pulse continued without giving a new integration start signal
Operation with the shutter function
Integration can be suspended at any time via pin DIS,
i.e. the photodiodes are disconnected from their corre-
sponding integration capacitor when DIS is high and
the current integration capacitor voltages are main-
tained. If this pin is open or switched to GND the pixel
photocurrents are summed up by the integration ca-
pacitors until the next successive SI signal follows.
1
2
3
4
5
6 ...
127 128 1
CLK
SI
SNH
NRCI
DIS
PIX SAMPLE−C
integration
disabled
integration
enabled
Figure 7: Defining the integration time via shutter input DIS
integration
disabled