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PRELIMINARY

LDTC2/2

PAGE 15

LDTC2/2-00400-A  Rev A

OPERATION NOTES:

Modulation caution - if operating with VDD at 

12V, if you exceed 12V on R LD SET with the 

modulation signal for any duration, the WLD will 

be destroyed.  

WARNING:

The LDTC 2/2 does not support laser diode 

packages that incorporate a built in sensor that 

is connected to or common with the laser case 

ground.

ORDERING INFORMATION:

LDTC2/2E

LDTC2/2O

For easy heasinking of Open Frame Model:

WEV-300

WEV-301

WEV-302

Comes with board, WLD, WTC, base plate, lid, cables

Comes with board, WLD, WTC, standoffs & hardware, cables

Standard WLD or WTC thermal washer and heatsink

Standard WLD or WTC thermal washer, heatsink, and 5V fan

Standard WLD or WTC thermal washer, heatsink, and 12V fan

Summary of Contents for LDTC2/2

Page 1: ...er laser diodes for medical diagnostic equipment remote sensing and analytical instrumentation Combine the drive power of the WLD3343 with the temperature stability of the WTC3243 FEATURES Small packa...

Page 2: ...LED Remote Enable CW 3 W 2 CCW 1 R5 500 1 2 3 JP3 HEADER 3 Sho w n i n CC LDC PDA PDC LDA VDD VDD VDD VDD Ext Vset LIM S2 EG2211 R23 1 00K R22 1 00K R17 1 00K 1 R7 1 00K R19 1 00K R21 4 99K R18 150 R1...

Page 3: ...3 3V 1 U8 LM3480IM3 3 3 VCC Vset DAC VDD VDD VDD VCC VCC VCC R35 20 0K 1 2 3 4 5 6 7 8 9 10 11 12 J2 CON12 ACT T SET T GND ACT T SET T Common Common TEC TEC Sensor R33 10 0K R32 100K 1 2 3 J1 CON3 VDD...

Page 4: ...VDD Current VDD supply quiescent INPUT Offset Voltage initial Imon Bias Current based on input Res of op amp Common Mode Range Common Mode Rejection Set point Power Supply Rejection THERMAL Heatsprea...

Page 5: ...ps Pins 2 and 9 Pins 2 and 9 TAMBIENT 25 C Pins 2 and 9 TAMBIENT 25 C Pins 2 and 9 Full Temp Range Full Temperature Range Full Temperature Range 0 001 0 003 P 18 2 2 0 VS 0 7 VS 1 2 VS 1 6 VS 1 8 VS 1...

Page 6: ...tage produced and transfer function to temperature is determined by the sensor chosen Connect a voltage source between Pin 11 VSET and Pin 12 GND to control the temperature setting remotely A default...

Page 7: ...Vs VLoad and mark on the X axis Example 12 volts 5 volts 7 volts Point A 2 Determine the maximum current ILoad through the driver and mark on the Y axis 1 amp Point B 3 Draw a horizontal line through...

Page 8: ...rrent ILoad 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 current line...

Page 9: ...ctric Thermoelectric Resistive Htr Resistive Htr TEC Connector 3 Pin 6 Thermoelectric positive wire Thermoelectric negative wire TEC Connector 3 Pin 7 Thermoelectric negative wire Thermoelectric posit...

Page 10: ...n the WTC keep VS as low as possible Online Safe Operating Area SOA calculators are available for the WTC3243 Calculate the maximum power dissipation of your design at http www teamwavelength com tool...

Page 11: ...t Sense Resistor RSENSE vs Maximum Laser Diode Current ILDMAX Figure 2 Location of RSENSE Equation 1 Calculating RSENSE Constant Power Mode WLD OPERATION Equation 2 Calculating The Power Rating For RS...

Page 12: ...WTC3243 This supply furnishes the voltage to the control electronics of the devices as well as the compliance voltage for the WLD3343 Laser Driver The supply should be capable of providing at least 3...

Page 13: ...D lights GREEN when Laser Diode Current is Enabled 7 MONITOR LASER DIODE OR PHOTODIODE CURRENT Equation3providesatransferfunctionforconverting the voltage output of LD I M Laser Diode Current Monitor...

Page 14: ...connect an external voltage source to the R LD SET input The ISET trim pot provides a Set Point adjustment of between zero to 2 5 V To use an external voltage source summed with the voltage supplied...

Page 15: ...rt laser diode packages that incorporate a built in sensor that is connected to or common with the laser case ground ORDERING INFORMATION LDTC2 2E LDTC2 2O For easy heasinking of Open Frame Model WEV...

Page 16: ...MINARY LDTC2 2 PAGE 16 LDTC2 2 00400 A Rev A MECHANICAL SPECIFICATIONS LDTC2 2 E with enclosure 2 70 68 6 mm 0 15 3 8 mm 2 40 61 0 mm 4 80 121 9 mm 4 20 106 7 mm 0 15 3 8 mm 4 50 114 3 mm 0 13 3 2 mm...

Page 17: ...PECIFICATIONS LDTC2 2 O Open Frame 1 1 1 CC CP S2 ON OFF Tset LIMA LIMB ILIM ISET D1 D2 J1 J2 J3 J4 ExtTset Vset PDset R2 R3 R4 R5 R6 0 15 3 8 mm 2 20 55 9 mm 0 15 3 8 mm 3 70 94 0 mm 0 062 1 6 mm 0 5...

Page 18: ...DTC2 2 PAGE 18 LDTC2 2 00400 A Rev A HEATSINK FOOTPRINT 0 78 19 8 mm 0 945 24 0 mm 0 68 17 2 mm 0 946 24 0 mm 2 40 60 9 mm 0 945 24 0 mm 1 25 31 7 mm 0 156 4 0 mm 4 40 tapped holes in device 0 15 3 8...

Page 19: ...ORANGE GRN W BLK WHT W BLK BLACK RED W BLK RED ORG W BLK GREEN 1 10 WIRE COLOR BLACK WHITE BLUE RED GREEN RED W BLK ORANGE WHT W BLK ORG W BLK GRN W BLK LDTC2 2 SERIES WCB 302 I O CABLE PIN 1 SP1 2 SP...

Page 20: ...lusive or exclusive of any other life support device CERTIFICATION AND WARRANTY CERTIFICATION Wavelength Electronics WEI certifies that this product met it s published specifications at the time of sh...

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