Wavelength Electronics LDTC2/2E, Техническое описание и руководство по эксплуатации

Страница: 6 / 25

© 2018 www.teamWavelength.com 6
LDTC2/2 LASER DIODE DRIVER AND TEMPERATURE CONTROLLER
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
SYMBOL
LDTC2/2E LDTC2/2O UNIT NOTE
LD Supply Voltage & Control Electronics V
DD
+4.75 to +12 VDC
TC Load Supply Voltage V
S
+4.5 to +28 VDC
Max LD Output Current I
LD
2.2 A
Max TC Output Current I
OUT
±2.2 A
Laser Driver Internal Power Dissipation P
MAX
9 W T
AMBIENT
= 25ºC
Temperature Controller Internal Power
Dissipation
P
MAX
9 W
T
AMBIENT
= 25ºC (with fan
and heat sink)
Case Operating Temperature
[1]
T
OPR
-40 to 85 ºC
Case Storage Temperature T
STG
-65 to 150 ºC
Weight 6.5 2.4 oz
184.3 g (LDTC2/2E)
68.0 g (LDTC2/2O)
Size 4.8 × 2.7 × 1.14 4.2 × 2.5 × 1 inches
121.9 × 68.6 × 29.0 mm (2/2E)
106.7 × 63.5 × 25.4 mm (2/2O)
LASER DRIVER
SPECIFICATIONS
MIN TYP MAX UNIT NOTE
CONSTANT CURRENT CONTROL
Short Term Stability, 1 hour 200 ppm T
AMBIENT
= 25ºC
CONSTANT POWER CONTROL
Short Term Stability, 1 hour 0.01 % T
AMBIENT
= 25ºC
Long Term Stability, 24 hours 0.05 % T
AMBIENT
= 25ºC
OUTPUT
Peak Current, I
MAX
1.8 2.0 2.2 A With heat sink and fan.
Compliance Voltage, Laser Diode Load 3.0 V Full Temp. Range, I
LD
=2.0A, 5V
Rise Time 460 nsec I
LD
= 2 A
Fall Time 320 nsec I
LD
= 2 A
Bandwidth, Constant Current 1.6 MHz Sinewave input signal
Bandwidth, Constant Power Depends on Photodiode Bandwidth
Delayed Start 0.25 sec
Slow Start Ramp 0.01 sec
POWER SUPPLY
Voltage, V
DD
5 12 V
Quiescent Current, V
DD
5 10 15 mA
MODULATION INPUT
VSET Input Voltage Range 0 2 V
VSET Damage Threshold < -0.5 > 5.4 V
VSET Input Impedance 20 kΩ
[1]
With Revision D of the WLD3343, an internal thermostat has been added to activate Shutdown (SHD) when the internal
temperature exteeds 105°C. The output will be re-enabled after a 250 to 300 msec slow-start once the internal temperature
drops below 95°C.
CAUTION: Operation higher than 5 V on V
DD
(i.e. 12 V) requires close evaluation of the SOA curves and current limit
settings. Damage to the WLD or WTC will occur if they are operated outside their Safe Operating Area. Contact the factory
if you plan to use higher than 5 V.