IC-LFS_15 Datasheet, PDF (8/10 Pages) IC-Haus GmbH – 32x1 LINEAR IMAGE SENSOR

iC-LFS
32x1 LINEAR IMAGE SENSOR
30 31 32 1
2
3
4
...
CLK
Rev A2, Page 8/10
31
32 33 34
35
SI
V(AO)
Pix30 Pix31 Pix32
Pix1
Pix2
Pix3
...
Pix31 Pix32
Pix1
SNH
SNH32
NRCI
Integration Time
Figure 6: Clock pulse continued without giving a new integration start signal
Operation with the shutter function
Integration can be halted at any time via pin DIS, i.e. the
photodiodes are disconnected from their corresponding
integration capacitor when DIS is high and the current
integration capacitor voltages are maintained. If this pin
is open or switched to GND the pixel photocurrents are
summed up by the integration capacitors until the next
successive SI signal follows.
1
2
3
4
5
6 ...
31 32 1
CLK
SI
SNH
NRCI
DIS
PIX SAMPLE−C
Integration
Disabled
Integration
Enabled
Integration
Disabled
Figure 7: Defining the integration time via shutter input DIS
External bias current setting
In order to reduce the power consumption of the device
an external reference current can be supplied to pin
RSET which reduces the maximum readout frequency,
however. To this end a resistor must be connected
from VCC to RSET. If this pin is not used, it should be
connected to GND.