1.7 Connecting components
ITC5000
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1.7 Connecting components
Mostly the following components are installed together with the laser:
•
Laser diode
•
Monitor diode
•
TEC element for chip temperature control
•
Temperature sensor (thermistor)
The laser diode and the TEC element are always sourced relative to ground by the
combi module.
This is of considerable advantage regarding the safety of devices and stability of
currents.
The monitor diode input is a trans-impedance amplifier input with virtual ground (input
impedance 0
Ω
).
The monitor diode input can be operated without or with bias voltage (0 V...4 V). The
polarity for the monitor diode must be set correspondingly.
A missing thermistor is detected by the ITC5xxx.
