The laser diode drivers iC-NZN and iC-NZP from iCHaus Corp. (Bodenheim, Germany) operate laser diodes in both CW and spike-free pulse mode, with up to 155 MHz. The devices allow either the optical output power (APC) or laser diode current (ACC) to be controlled. Blue laser diodes can also be operated with iC-NZN. The maximum available laser diode current is 300mA, and the devices have an adjustable current limit. When the current limit is reached, it is signaled as an error message output which also indicates undervoltage and overtemperature. There is a safety shutdown function for the output stage in the event of overtemperature. The device can also be driven by either LVDS or TTL pulse signals. iC-NZN and iC-NZP have a standby mode with a low current consumption of < 50 μA.
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This week's Question: Sony Computer Science Laboratory (CSL) in Paris is developing a system of algorithms which can create songs that cater to the user's taste, based on styles adapted from existing music. Starting with a sheet-music database of...
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