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News
Broadened range of SPC-PSDs
SiTeks range of PSDs equipped with
attached signal processing circuit, SPCPSDs,
are now broadened to include
not only the 2L10 PSD but also two
of our other 2-dimensional PSDs, 2L2
and 2L4, and three of our 1-dimensional
PSDs, 1L2.5, 1L5 and 1L10.
These devices contains all necessary
electronics for biasing the PSD
and extracting the position information
from the photo currents. The
SPC-PSD circuitry converts the photo
current to voltages using parallel
transimpedance amplifier stages,
supplies the bias voltage to the PSD
and performs the sum and difference
calculations. All the signals, sum, diff
and converted photo currents, are
available as outputs. Furthermore,
inputs are available for external offset
compensation of the sum and diff
signals.
The use of thick film technology
on ceramic substrate and laser trimmed
resistors gives the SPC-PSDs
maximum precision, high reliability
and small size. The overall size of the
devices are only 20.5 x 20.5 mm2 and
they come with surface mount leads
and a D263 glass window.
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