Description
The M66515 is a laser diode driver/controller that performs drive and controls the laser power control of a type of semiconductor laser diode the anode of which is connected, with the cathode of a photodiode for monitoring, to a stem in which the semiconductor laser diode anode and monitoring photo diode cathode are connected to the stem.
This IC has a sink-type laser driving current output pin, and can drive a laser diode with a bias current of up to a maximum 30 mA and with switched currents of up to 120 mA, switched at rates of up to 40 Mbps.
The IC incorporates a sample hold circuit, so that a self-APC (Automatic Power Control) system, which does not require external laser power control, can be realized.

Features
• Internal sample-and-hold circuit for self-APC configuration
• High-speed switching (40 Mbps)
• High driving currents (150 mA max)
• Settable bias current (30 mA max)
• Single 5 V power supply

Applications
• Equipment employing semiconductor laser diodes