Wavelength Electronics LDTC0520, Техническое описание и руководство по эксплуатации

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LDTC0520 / LDTC1020 LASER DIODE AND TEMPERATURE CONTROLLER
ELECTRICAL SPECIFICATIONS
(CONTINUED)
TEMPERATURE CONTROLLER
SPECIFICATIONS
MIN TYP MAX UNIT NOTE
OUTPUT CURRENT
Max Output Current ±2.0 ±2.2 A
Compliance Voltage, TEC
V
S
- 0.7 V
S
- 0.5 V
Full Temp Range, I
TEC
= 100 mA
Compliance Voltage, TEC V
S
- 1.2 V
S
- 1.0 V Full Temp Range, I
TEC
= 1 A
Compliance Voltage, TEC V
S
- 1.6 V
S
- 1.4 V Full Temp Range, I
TEC
= 1.5 A
Compliance Voltage, TEC V
S
- 1.8 V
S
- 1.6 V Full Temp Range, I
TEC
= 2 A
Compliance Voltage, Resistive Heater
V
S
- 1.7 V
S
- 1.6
V Full Temp Range, I
TEC
= 2 A
Short Term Stability, 1 hour
1
0.001 0.002 0.010 ºC OFF ambient, 10 kΩ thermistor @ 25ºC
Short Term Stability, 1 hour
1
0.005 ºC ON ambient, 10 kΩ thermistor @ 25ºC
Long Term Stability, 24 hours
1
0.003 0.008 0.010 ºC OFF ambient, 10 kΩ thermistor @ 25ºC
TC POWER SUPPLY
Power Supply Voltage, V
DD_WTC
4.5 12 VDC
Quiescent Current, V
DD_WTC
55 105 mA
Power Supply Voltage, V
S
4.5 30 VDC
Quiescent Current, V
S
20 50 100 mA
TEMPERATURE SENSORS
Sensor Compatibility Thermistor, RTD, IC Sensors
Sensor Input Voltage Range
2
0.3 to (V
DD_WTC
– 2.0) V
If this voltage falls below 0.3 V, a the
LDTC defaults to a setting of 1 V.
Sensor Input Damage Threshold 3.6 V
Sensor Bias Current Selection 2 µA to 1 mA Adjustable
SETPOINT AND MONITORS
Internal T SET Voltage Range
3
0 to 4 V Product Revision C
EXT T SET Input Impedance 1 MΩ
EXT T SET Input Voltage Range 0 to 3.3 V
EXT T SET Input Damage Threshold 0 to 3.6 V
Setpoint vs. Actual Temperature Accuracy 0.1 2 4 mV T
SET
= 25ºC, 10 kΩ thermistor
FEEDBACK LOOP
P (Proportional Gain) 18 20 22 A / V
I (Integrator Time Constant) 2 3 4.5 sec
1
When using resistive heaters, stability can only be consistently achieved when specified temperatures are 10°C or more
above ambient.
2
The sensor bias source has a compliance up to (V
DD_WTC
– 2.0 V). In normal operation this limits the sensor voltage range
to (0.25 V to V
DD_WTC
– 2.0 V). While voltages up to ±0.5 V outside this range on the EXT T SET pin will not damage the unit,
the controller will not provide proper control under these conditions.
3
This specification is only valid for Product Revision C. The model revision can be found by looking at the serial number on
the cover, the third character indicates revision (for example, a Revision C model might have the serial number 00 C 1722003).
Revisions A and B of the LDTCxx20 were 0 to 2.5 V for this specification.
NOTE: Operation at V
S
> 5 V or V
DD_FL
> 5 V requires evaluation of the SOA curves and current limit settings. Damage to
the LDTC will occur if it is operated outside the Safe Operating Area (SOA). See our online SOA calculator for:
WTC3243 at www.teamwavelength.com/support/design-tools/soa-tc-calculator/
FL500 at www.teamwavelength.com/support/design-tools/soa-ld-calculator/ .