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Driving laser diodes from CW to 155 MHz with power or current control

7th September 2011

iC-Haus

ES Admin

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The all-purpose laser diode drivers iC-NZN and iC-NZP 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. In ACC mode also laser diodes without monitor diodes can be used. Blue laser diodes can also be operated with iC-NZN. The maximum available laser diode current is 300 mA. The devices have an adjustable current limit.

When the current limit is reached, this is signaled at 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 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. The iC-NZN/NZP is in production and sold through local distribution. The price is $4.28 in 1000 pcs quantities.

Applications for iC-NZN

Pulsed and CW LD modules

Laser diode pointers

Laser levels

Bar-code readers

Distance measurement

Blue laser diodes

Features of iC-NZN

Peak value controlled laser diode driver for operation from CW up to 155 MHz

Spike-free switching of laser currents of up to 300 mA

Setting of laser power (APC) via external resistor

Optional current control (ACC)

Laser current limitation

LVDS/TTL switching input with TTL monitor output

Low current consumption sleep-mode < 50 μA

Safety shutdown with overtemperature

Error signal output with overtemperature, undervoltage and overcurrent

All current LD types can be used (N/P/M configurations)

Blue laser diodes supported

Fast soft-start

Strong suppression of transients with small external capacitors

Applications for iC-NZP

Pulsed and CW LD modules

Laser diode pointers

Laser levels

Bar-code readers

Distance measurement

Features of iC-NZP

Peak value controlled laser driver for operation from CW up to 155 MHz

Spike-free switching of laser currents of up to 300 mA

Setting of laser power (APC) via external resistor

Optional current control (ACC)

Laser current limitation

LVDS/TTL switching input with TTL monitor output

Low current consumption sleep-mode < 50 μA

Safety shutdown with overtemperature

Error signal output with overtemperature, undervoltage and overcurrent

All current LD types can be used (P/M/N configurations)

Fast soft-start

Strong suppression of transients with small external capacitors