|iC-LFS is an integrating light-to-voltage converter
with a single line of 32 pixels pitched at 63.5 μm
(center-to-center distance). Each pixel consists of a
56.4 μm x 200 μm photodiode, an integration capaci-
tor and a sample and hold circuit.
The integrated control logic makes operation very
simple, with only a start and clock signal necessary.
A third control input enables the integration period to
be paused at any time (electronic shutter).
With the start signal the hold mode is activated for all
pixels simultaneously with the next rising clock edge;
starting with pixel 1 the hold voltages are switched in
sequence to the push-pull output amplifier. The sec-
ond clock pulse deletes all integration capacitors and
the integration period starts again in the background
during the output phase. A run is complete after 32
iC-LFS is suitable for high clock rates of up to 5 MHz.
If this is not required the supply current can be re-
duced via the external bias setting.