iC-HG
3 A LASER SWITCH
nar y
limi
pre
Rev A1, Page 2/19
DESCRIPTION
Six channel Laser Switch iC-HG enables the spike-
free switching of laser diodes with well-defined cur-
rent pulses at frequencies ranging from DC to
200 MHz.
The diode current is determined by the voltages at
pins CIx.
The six fast switches are controlled independently via
TTL inputs. Input ELVDS = hi selects LVDS type in-
puts and three channel mode.
TTL slow switch mode
is selected with 30% VDD and
LVDS slow switch
mode
with 70% VDD at input ELVDS.
The laser diode can thus be turned on and off or
switched between different current levels (LDKx con-
nected) defined by the voltages at CIx.
Each channel can be operated up to 500 mA DC cur-
rent depending on the heat dissipation.
The integrated thermal shutdown feature protects the
iC-HG from damage by excessive temperature.
ICHAUS [ IC-HAUS GMBH ]
