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© 2007

LDTC0520 / LDTC1020

PAGE 6

LDTC1020-00400-A  Rev B

Short Term Stability,  1 hour

Long Term Stability,  24 hour

Control Loop

P (Proportional Gain)

I (Integrator Time Constant)

Setpoint vs. Actual T Accuracy

OUTPUT

Current, peak, see SOA Chart

Compliance Voltage, TEC

Compliance Voltage, TEC

Compliance Voltage, TEC

Compliance Voltage, TEC

Compliance Voltage, 

Resistive Heater

POWER SUPPLY

Voltage, VDD

Current, VDD supply, quiescent

Voltage, Vs

Current, Vs supply, quiescent

INPUT

Offset Voltage, initial

Bias Current

Offset Current

Common Mode Range  (2)

Common Mode Rejection

Power Supply Rejection

Input Impedence

Input voltage range  (2)

TSET = 25˚C using 10 k

Ω

 thermistor

TSET = 25˚C using 10 k

Ω

 thermistor

TSET = 25˚C using 10 k

Ω

  thermistor

Full Temp. Range, I

OUT 

= 100 mA

Full Temp. Range, I

OUT

 = 1 Amp

Full Temp. Range, I

OUT

 = 1.5 Amps

Full Temp. Range, I

OUT

 = 2.0 Amps

Full Temp. Range, I

OUT

 = 2.0 Amps

Pins 2 and 9

Pins 2 and 9, T

AMBIENT

 = 25˚C

Pins 2 and 9, T

AMBIENT

 = 25˚C

Pins 2 and 9, Full Temp. Range

Full Temperature Range

Full Temperature Range

0.001

0.003

P

18

2

.1

±1.8

| V

S

 - 0.7 |

| V

S

 - 1.2 |

| V

S

 - 1.6 |

| V

S

 - 1.8 |

| V

S

 - 1.7|

4.5

4.5

20

0

60

60

GND

0.005

0.008

20

3

2

±2.0

| V

S

 - 0.5 |

| V

S

 - 1.0 |

| V

S

 - 1.4 |

| V

S

 - 1.6 |

| V

S

 - 1.6 |

55

50

1

20

2

85

80

500

0.010

0.010

PI

22

4.5

4

± 2.2

12

105

28

100

2

50

10

VDD-2

VDD-2

˚C

˚C

A/V

Sec.

mV

Amps

Volts

Volts

Volts

Volts

Volts

Volts

mA

Volts

mA

mV

nA

nA

V

dB

dB

k

Ω

Volts

PARAMETER 

TEMPERATURE CONTROL

TEST CONDITIONS

MIN

TYP

UNITS

MAX

(2) 

The bias source has a compliance up to VDD - 2.0 V.  In normal operation this limits the sensor voltage range to 

0.25V to VDD - 2.0V.  While voltages up to +/- 5V outside this range on the Vset pin will not damage the unit, it will 

not provide proper control under these conditions.

NOTE:  Operation higher than 5V on VDD (i.e. 12V) requires close evaluation of the SOA curves and 

current limit settings.  Damage to the FL or WTC will occur if they are operated outside their Safe 

Operating Area (SOA).  Contact the factory if you plan to use higher than 5V.  See our online SOA 

calculator for the WTC and FL at 

http://www.teamwavelength.com/tools/tools.asp

.

ELECTRICAL AND OPERATING SPECIFICATIONS, continued
WTC3243, Temperature Controller

Содержание LDTC0520

Страница 1: ...er Driver It maintains precision laser diode current Constant Current mode or stable photodiode current Constant Power mode using electronics compatible with Common Photodiode Cathode Type A B lasers...

Страница 2: ...DFB1 C20 0 012UF C25 22000PF C22 0 47uF C17 0 47uF C15 1uF C28 0 1uF L2 10uH L1 10uH D1 DIODE VIN 3 SW1 2 VOUT1 1 SHDN1 9 SHDN2 8 GND 11 SW2 4 D2 5 FB1 10 VREF 7 FB2 6 U8 LT3463 VCC VEE R18 10 0 R26 1...

Страница 3: ...9 100K VDD_WTC NO 6 COM 5 NC 4 IN 1 V 2 GND 3 U6 ISL84544 R12 1 00K 1 7 4 3 2 6 _ U5 OP777AR 5 6 7 8 4 U3B OP727ARU OS 5 6 7 8 4 U1B OP727ARU OS R14 348K 1 R7 10 0K R8 4 99K CW 3 W 2 CCW 1 R3 5K C3 4...

Страница 4: ...Diode Driver Rating Supply Voltage 1 Voltage on Pin 1 Supply Voltage 2 Voltage on Pin 14 Output Current See SOA Chart Power Dissipation TAMBIENT 25 C See SOA Chart with fan and heat sink VDD VS IOUT P...

Страница 5: ...nput Res of op amp Common Mode Range Common Mode Rejection Set point Power Supply Rejection THERMAL Heatspreader Temperature Rise Pin Solderability NOISE Noise and Ripple RMS Leakage Current TYP MIN M...

Страница 6: ...Full Temp Range Full Temperature Range Full Temperature Range 0 001 0 003 P 18 2 1 1 8 VS 0 7 VS 1 2 VS 1 6 VS 1 8 VS 1 7 4 5 4 5 20 0 60 60 GND 0 005 0 008 20 3 2 2 0 VS 0 5 VS 1 0 VS 1 4 VS 1 6 VS...

Страница 7: ...produced and transfer function correlating to temperature is determined by the sensor being utilized Monitor the temperature setpoint voltage The voltage produced and transfer function correlating to...

Страница 8: ...m current through the driver and mark on theY axis 400 mA Point B 3 Draw a horizontal line through Point B across the chart Line BB 4 Draw a vertical line from Point A to the maximum current line indi...

Страница 9: ...imum current ILoad through the driver and mark on theY axis 750 mA Point B 3 Draw a horizontal line through Point B across the chart Line BB 4 Draw a vertical line from Point A to the maximum current...

Страница 10: ...ine the maximum current through the controller and mark on theY axis 1 Amp Point B 3 Draw a horizontal line through Point B across the chart Line BB 4 Draw a vertical line from Point A to the maximum...

Страница 11: ...ic Resistive Heater Resistive Heater TEC Connector 3 Pin 6 Thermoelectric positive wire Thermoelectric negative wire TEC Connector 3 Pin 7 Thermoelectric negative wire Thermoelectric positive wire Qui...

Страница 12: ...w below 250 mV the temperature controller may have a difficult time achieving high levels of precision and stability The sensor voltage may be amplified by a factor of 10 by placing a jumper between P...

Страница 13: ...BIAS shown in Figure 4 should be changed to 2k for a bias current of 1mA through the sensor The voltage output of the LM335 is 10mV K AD590 To use an Analog Devices AD590 temperature sensor with the L...

Страница 14: ...high enough to supply the voltage required by the TEC or resistive heater plus the voltage drop across the WTC The voltage available to the TEC will be from between 0 5 to 1 8V lower than VS dependin...

Страница 15: ...voltage set using the onboard potentiometer or remote temperature setpoint and can be measured across Pin 10 SET T M and Pin 12 COM The standard LDTC is configured to operate with a 10k thermistor and...

Страница 16: ...Constant Power mode See Figure 7 for switch setting details 2 ATTACH THE FL POWER SUPPLY The control electronics for the FL500 s as well as the laser diode current are supplied by the VDD_FL power sup...

Страница 17: ...ONITOR PHOTODIODE With power removed from the LDTC connect the output connector J3 to your laser diode See figure 1 for proper pin connections The FL500 is compatible with Type A and B laser package c...

Страница 18: ...power monitor for the unit The power monitor provides a means to measure the voltage developed across the photodiode current sense resistor RPD This resistor is labeled on the silk screen on the chass...

Страница 19: ...nction for the LDTC1020 is ILD 500 mA V In Constant Power Mode the transfer function between the input voltage and photodiode cur rent is IPD 1 mA V 7 LASER DIODE SETPOINT AND MODULATION The laser dio...

Страница 20: ...d ORDERING INFORMATION LDTC0520 Comes with board one FL500 Laser Driver WTC3243 Temperature Controller base plate enclosure and unterminated power input and output cables LDTC1020 Comes with board Dua...

Страница 21: ...www teamwavelength com 2007 LDTC0520 LDTC1020 PAGE 21 LDTC1020 00400 A Rev B MECHANICAL SPECIFICATIONS...

Страница 22: ...W BLK ORANGE WHT W BLK ORG W BLK GRN W BLK LDTC2 2 SERIES WCB 302 I O CABLE PIN 1 SP1 2 SP2 3 LD SHD 4 COM 5 R LDSET 6 COM 7 LD P M 8 LD I M 9 ACT T M 10 SET T M 11 R TCSET 12 COM WIRE COLOR NC NC RED...

Страница 23: ...usive of any other life support device CERTIFICATION AND WARRANTY CERTIFICATION Wavelength Electronics WEI certifies that this product met its published specifications at the time of shipment Waveleng...

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