IC-LA Datasheet, PDF (2/8 Pages) IC-Haus GmbH – 64X1 LINEAR IMAGE SENSOR

iC-LA
64X1 LINEAR IMAGE SENSOR
Rev A3, Page 2/8
DESCRIPTION
iC-LA is an integrating light-to-voltage converter with a row of 64 separate pixels. Each pixel consists of one
photodiode, an integration capacitor and a track-and-hold circuit. For each pixel the photocurrent of the
photodiode charges the integration capacitor. The track-and-hold circuit reads out the capacitor voltage in
track mode; when the circuit switches into hold mode this voltage is present for one clock cycle at output
AOUT.
Photocurrent integration is started simultaneously for all pixels with the rising edge of the clock signal if DIN
has received a high signal. Following hold mode, the pixels are subsequently selected by their output
switches. The downstream multiplexer selects the odd or even bus line for the output buffer. This dual line
configuration means that a high working speed is obtained.
The switches are controlled by the shift register whereas the multiplexer is operated by the control logic. The
DNU input signal determines the direction of shift. If DNU is low, the pixel signals are switched in ascending
order to AOUT, starting at pixel 0. If DNU is high, the pixels are switched in descending order, starting at pixel
63.
If input DIN is still high at the end of a completed integration cycle, all integration capacitors are automatically
reset and a new integration cycle is initiated. Continuous operation of the iC is thus possible.
All registers are reset with low voltage at the digital supply (power-down reset). All pins are protected against
damage by ESD.