USBKIT datasheet(2/20 Pages) WAVELENGTH

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PLD10000/PLD12500 LASER DIODE DRIVER

QUICK CONNECT GUIDE

To ensure safe operaTion of The pLD Driver, iT is

imperaTive ThaT you DeTermine ThaT The uniT wiLL be

operaTing wiThin The inTernaL heaT DissipaTion

safe

operaTing area (soa).

Visit the Wavelength Electronics website for the most

accurate, up-to-date, and easy to use SOA calculator:

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

Figure 1 shows the top view of the PLD driver and the

locations of the configuration switches, Output and Current

Limit adjust trimpots, and status LEDs.

Figure 2 shows a typical wiring diagram for the PLD driver

and external electronics to operate a Type A or B laser.

Figure 3 illustrates the three laser types that the PLD can

drive. For detailed instructions on using the different laser

types refer to the

Operating Instructions on page 7.

Type A Laser Diode

Type B Laser Diode

Type C Laser Diode

Common

Cathode

Laser Diode Anode &

Photodiode Cathode Common

Isolated Photodiode

Short the

Laser Diode Anode

to Photodiode Cathode

Common

Anode

Laser Diode Cathode &

Photodiode Anode Common

MODE

OUT

LIM I

PD RNG

+5V

Analog In

P Monitor

I Monitor

Common

Lim I Mon

Lim I Stat

LD Enable

PD Aux

Aux V+

GND

LD Anode/

+LD Supply

LD Cathode

PD Anode

PD Cathode

N/C

ENBL

OUT

ADJ

LIM I

ADJ

Output Adjust (12-turn)

Current Limit

Adjust (12-turn)

Output Enable LED

(Green = ON)

Current Limit Status

LED (Red = LIMIT)

Operating Mode *

PD Range *

L = 15 – 500 µA

H = 50 – 5000 µA

P = Constant Power

I = Constant Current

* DO NOT change switch positions while the output is

enabled; Doing so may damage the laser diode.

7,8,9

4,5,6

LD Anode

LD Cathode

13,14,15

LD Enable

Closed = Output Enabled

Open = Output Disabled

10,11,12

+5 V

GND

(Internally Shorted)

Analog Input

P Monitor

(PD Current)

I Monitor

(Output Current)

LIM I Monitor

LIM I Status

Optional External

Setpoint (0 to 5 V)

5 VDC

PD Anode

0.1 µF

Common

(Low Current)

+5V

10 k

(Pull Up Resistor)

Short pin 16 to pin 19 when

analog input is not used.

Use caution when the PLD is combined with a

PTC temperature controller: if the TEC or

thermistor is connected to the laser diode, two

power supplies are required and must float

independently of each other.

DMM

Figure 1. PLD Top View and Pin Layout

Figure 2. PLD10000 / PLD12500 Wiring Diagram, Type A/B Lasers

Figure 3. Laser Type Diagrams

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