DC388C Analog Devices

DESCRIPTION Demonstration circuit DC388 utilizes the LTC1923 thermoelectric cooler (TEC) controller. It provides a complete temperature control solution for TEC based temperature control of fiber-optic lasers. Laser temperature may be controlled at temperatures above or below ambient with set point stability typically well within .05 C over widely varying ambient temperature. Temperature set point is established with a screwdriver driven potentiometer or a 14-bit on-board DAC. Considerably more detail relating to TEC temperature control issues is available in LTC Application Note AN-89, A Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers. This publication should be reviewed before demo board results are evaluated. QUICK START GUIDE The Demonstration Board is easy to use if the following procedure is followed: 1. Connect a turned-off power supply (2.7-6V) to the VDD and GND terminals. 2. Connect a thermistor to the NTC+ and NTC terminals. Although the thermistor is not a polarized device, one of its leads may be committed to the lasers case ground. If this is so, this lead should be connected to NTC -. Shielded cable should be used for the thermistor leads, with the shield connected to ground. 3. Temperature set point is determined by the potentiometer or the on-board serial- addressed DAC. Set JPI jumper connections to the desired temperature set point source. 4. Connect the TEC leads from the laser to the boards TEC+ and TEC terminals. Observe polarity. 5. Turn on the power supply. The board will typically pull hundreds of milliamperes for several seconds. When the temperature set point is reached current will drop and settle to some sustaining value. 6. Performance optimization for any particular laser is achievable by following the procedures and guidelines given in LTC Application Note AN-89. X-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Power Management IC Development Tools category: Click to view products by Analog Devices manufacturer: Other Similar products are found below : EVAL-ADM1168LQEBZ EVB-EP5348UI MIC23451-AAAYFL EV MIC5281YMME EV DA9063-EVAL ADP122-3.3-EVALZ ADP130- 0.8-EVALZ ADP130-1.2-EVALZ ADP130-1.5-EVALZ ADP130-1.8-EVALZ ADP1714-3.3-EVALZ ADP1716-2.5-EVALZ ADP1740-1.5- EVALZ ADP1752-1.5-EVALZ ADP1828LC-EVALZ ADP1870-0.3-EVALZ ADP1871-0.6-EVALZ ADP1873-0.6-EVALZ ADP1874-0.3- EVALZ ADP1882-1.0-EVALZ ADP199CB-EVALZ ADP2102-1.25-EVALZ ADP2102-1.875EVALZ ADP2102-1.8-EVALZ ADP2102-2- EVALZ ADP2102-3-EVALZ ADP2102-4-EVALZ ADP2106-1.8-EVALZ ADP2147CB-110EVALZ AS3606-DB BQ24010EVM BQ24075TEVM BQ24155EVM BQ24157EVM-697 BQ24160EVM-742 BQ24296MEVM-655 BQ25010EVM BQ3055EVM NCV891330PD50GEVB ISLUSBI2CKIT1Z LM2744EVAL LM2854EVAL LM3658SD-AEV/NOPB LM3658SDEV/NOPB LM3691TL- 1.8EV/NOPB LM4510SDEV/NOPB LM5033SD-EVAL LP38512TS-1.8EV EVAL-ADM1186-1MBZ EVAL-ADM1186-2MBZ