PLD-200 / PLD-500 / PLD-5000
4
_______________________________________________
Electrical Specifications
Model Number
Drive Current Output
Output Current Range
Compliance Voltage with +5V input
Compliance Voltage
Temperature Coefficient
Short Term Stability (1 hr)
Long Term Stability (24 hrs.)
Noise and Ripple (rms)
Current Limit Range
Photodiode Feedback
Standard Range
Optional Range (TYPE A & B ONLY)
Const. Power Output Stability
External Modulation (Constant
Current)
Input Impedance
Transfer Function (0 to +5 V Max)
Bandwidth (3 dB)
Depth of Modulation at 20kHz
Power Supply
Power Up Trip Point
Power Down Trip Point
Max. Internal Power Dissipation
Setpoint and Monitor Accuracy
Limit I Setpoint, Output Setpoint, I & P
Setpoint Monitors (Pins 5, 7, & 8)
PLD-200
0 - 200 mA
> 3 V
> 28 V
< 100 ppm/
°
C
< 10 ppm
< 20 ppm
< 2
µ
A
0 - 200 mA
50 - 5000
µ
A
15 - 500
µ
A
< 0.02 %
1 M
Ω
40 mA/V
65 kHz
90%
4.5 V
3.5 V
3 Watts
5%
PLD-500
0 - 500 mA
> 3 V
> 28 V
< 100 ppm/
°
C
< 10 ppm
< 20 ppm
< 5
µ
A
0 - 500 mA
50 - 5000
µ
A
15 - 500
µ
A
< 0.02 %
1 M
Ω
100 mA/V
100 kHz
90%
4.5 V
3.5 V
9 Watts
5%
PLD-5000
0 - 5 Amps
> 3 V
> 28 V
< 100 ppm/
°
C
< 10 ppm
< 20 ppm
< 20
µ
A
0 - 5 Amps
50 - 5000
µ
A
15 - 500
µ
A
< 0.02 %
1 M
Ω
1000 mA/V
100 kHz
90%
4.5 V
3.5 V
15 Watts
5%
Power Supply Requirements:
STD +5 V Operation, TYPE A or B lasers:
Pin 10: +5 VDC (+5.5 V MAX)
Add for High Compliance Voltage:
Pin 12: +3 VDC to +30 VDC (+32 V max)
Add for TYPE C lasers:
Pin 1: +8 VDC to +12 VDC (+12.5 V max)
Supply Current
PLD-200 & PLD-500: 50 mA plus max. LD current
PLD-5000: 150 mA plus max LD current
Operating Temperature
0 to +50
°
C (guaranteed)
-40 to +75
°
C (typical)
Warm-up
1 hour to rated accuracy
Weight
< 0.3 Ibs.
Size (H x W x D)
1.52" x 2.65" x 0.81" (PLD-200)
1.52" x 2.65" x 1.10" (PLD-500)
1.52" x 2.65" x 1.82" (PLD-5000)
Connector
15 pins, see page 5 for PCB layout pattern
See page 16 for connector recommendation if
not mounting PLD to a circuit board.
___________
General Specifications
Compliance Voltage will vary depending on power supply voltages.
A maximum compliance voltage of +28 volts will be obtained with
+30 volts input. A maximum compliance voltage of +3 volts will
be obtained with +5 volts input. See page 8 for more detail.
With analog input (pin 9) shorted to common (pin 6).
Modulation bandwidth in Constant Power mode will depend on
photodiode response. It is typically 10% of Constant Current
Bandwidth.
The PLD series has internal control circuitry which turns the output
on and off depending on the voltage at pin 10. When the voltage
reaches the power up trip point (+4.5 V), and the LD Enable
(pin 3) is greater than 3 V, the module soft starts the laser diode.
When the voltage reaches the power down trip point (+3.5 V), the
module shunts current around the laser diode, powering it down in
a controlled fashion.
If thermistor or TE module are case common with the laser diode,
the PLD and temperature controller power supplies may need to
be isolated from each other or a bipolar supply may be required.
As pulse frequency increases on the analog input, the peak-to-
peak output amplitude diminishes. For example, these graphs
show the waveform shape at 10 Hz and 20 kHz. Depth of
modulation continues to decrease after 20 kHz.
5
1
4
5
3
2
1
2
3
6
4
4
6
