This document introduces the features and application scenarios of LTC1923EUH temperature controller, including how to build a demonstration circuit to evaluate its performance, which can be used for temperature control of fiber-optic lasers.
This document provides a quick start guide for Demonstration Circuit 491, which features the LTC1923EUH thermoelectric cooler (TEC) controller. The circuit is designed for temperature control of fiber-optic lasers, offering set point stability within 0.05°C over varying ambient temperatures. It utilizes a small 32-lead QFN package and operates with a 1MHz switching frequency to allow for compact component sizes.
| Package Type | 32-lead QFN |
|---|---|
| Package Dimensions | 5mm by 5mm |
| Switching Frequency | 1MHz |
| Assembly Area | 0.75" by 0.5" |
| Set Point Stability | 0.05°C |
| Input Voltage Range | 2.7-5.5V |
It provides a complete temperature control solution for TEC based temperature control of fiber-optic lasers.
The temperature set point is established using a potentiometer (R15) on the demonstration board.
More detail is available in LTC Application Note AN-89, A Thermoelectric Cooler Temperature Controller for Fiber Optic Lasers.