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10

LDD P SERIES LASER DIODE DRIVER

WiRing Ldd 1P modeLs

Figure 6 below shows the wiring diagram for LDD200 1P and LDD400 1P models. Additional discussion of resistor R

D can

be found on page 16 for factory recommendation, and on page 19 for custom value recommendation.

CURRENT

FEEDBACK

LASER DIODE

DRIVER

CURRENT

MONITOR

MOD

GND

1

2

3

4

V+

5

6

7

8

FEED

BACK

LD ANODE

LD

CATHODE

LASER

DIODE

OPTIONAL

PHOTODIODE

CONNECTION

R

- +

D

SENSE

+

R

-

V

IPD

PD

OR

SENSE

+

R

-

V

IPD

PD

0.1µF

V+

LDD 1P Models

Adding Resistor "R " protects

against conditions that could

cause damage to the laser diode.

This resistor is recommended for

operation, but not required.

This capacitor

debounces mechanical

switches connected

to the MOD input.

D

VOLTMETER

Switch

OPEN

CLOSED

Output

Off

On

For LDD 1P, select R = 1 kΩ

PD

PD

PD

Figure 6. Wiring diagram for LDD 1P models. For use with Type A and Type B diode lasers.

WiRing Ldd 2P modeLs

Figure 7 below shows the wiring diagram for LDD200 2P and LDD400 2P models. Additional discussion of resistor R

D can

be found on page 16 for factory recommendation, and on page 19 for custom value recommendation.

CURRENT

FEEDBACK

LASER DIODE

DRIVER

CURRENT

MONITOR

MOD

GND

1

2

3

4

V+

5

6

7

8

FEED

BACK

LD

CATHODE

LD

ANODE

LASER

DIODE

V+

OPTIONAL

PHOTODIODE CONNECTION

R

- +

D

SENSE

+

R

-

V

IPD

PD

OR

SENSE

+

R

-

V

IPD

PD

V+

V+

V+

+

-

10kΩ

10kΩ

10kΩ

10kΩ

RAIL TO

RAIL OUTPUT

OPAMP

1/2 AD8032

0.1µF

LDD 2P Models

Adding Resistor "R " protects

against conditions that could

cause damage to the laser diode.

This resistor is recommended for

operation, but not required.

This capacitor

debounces mechanical

switches connected

to the MOD input.

VOLT

METER

D

Switch

OPEN

CLOSED

Output

Off

On

For LDD 2P, select R = 1 kΩ

PD

PD

PD

Figure 7. Wiring diagram for LDD 2P models. For use with Type C diode lasers.