LDDEVALP datasheet(8/28 Pages) WAVELENGTH

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LDD P SERIES LASER DIODE DRIVER

OPERATING INSTRUCTIONS

The LDD P Series Laser Diode Drivers are designed for

stable, low noise operation. The power supply you select

will directly affect the noise performance of the driver. We

recommend using a regulated, linear power supply for

optimum performance. Depending on your requirements,

you may be able to use a switching power supply. Each

case must be evaluated independently because a switching

power supply will affect noise, transient, and stability

performance.

The LDD P Series can be purchased with the LDDEVALP

series evaluation kit for easy initial operation.

LASER SAFETY ISSUES

ATTENTION: If you plan to operate the LDD P with any

Wavelength temperature controller, you may need to use

separate power supplies. If the thermoelectric cooler or

thermistor is connected to the laser diode, please contact

the factory for technical assistance.

ATTENTION: Exceeding the maximum specified operating

current (I

OP MAX) will damage your laser diode. Become

familiar with the LDD P Series module operation and the

exact specifications of your laser diode before attaching

it to the LDD P module. Seek assistance from someone

with experience working with laser diodes if you have not

operated one before.

ATTENTION: The following instruments may cause

momentary opens, shorts, or impedance changes that will

damage a laser diode if attached to the output of a laser

diode driver.

1. A

voltmeter across the laser diode.

2. An

oscilloscope across the laser diode.

3. A

current meter in series with the laser diode.

All measurements made with these instruments on the

output should be made with a simulated load attached and

not a laser diode.

OPTIONAL: If laser diode and photodiode are isolated

(Type B Laser Diode), short the laser diode anode to the

photodiode cathode. The LDD P Series laser diode drivers

require the photodiode be connected to the laser diode.

NECESSARY EQUIPMENT

The following equipment is the minimum necessary to

configure the LDD P for basic operation:

• LDD P controller

• Digital voltmeter, 4-½ digit resolution recommended

• Test load for configuring the driver

• Laser diode, mount, and optional temperature control

system

• Connecting wires

• Power supply

• LDDEVALP and soldering iron (optional)

SAFE OPERATING AREA AND

THERMAL DESIGN CONSIDERATIONS

SOAcharts are included in this datasheet for quick reference,

but we recommend you use the online tools instead.

www.teamwavelength.com/support/design-tools/soa-ld-calculator/

It is imperative that you verify the unit will

operate within the internal heat dissipation

Safe Operating Area (SOA).

Operating the driver outside the SOA may

damage or destroy the driver and/or laser.

PREVENT DAMAGE FROM ELECTROSTATIC

DISCHARGE

Before proceeding, it is critical that you take precautions to

prevent electrostatic discharge (ESD) damage to the driver

and your laser. ESD damage can result from improper

handling of sensitive electronics, and is easily preventable

with simple precautions.

For more information regarding ESD, see Application Note

AN-LDTC06: Basics: Electrostatic Discharge (ESD).

We recommend that you always observe ESD precautions

when handling the LDD P driver and your laser diode.

LDDEVALP Datasheet(PDF) 8 Page - Wavelength Electronics, Inc.

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