ILX Lightwave LDT-5525B- Thermoelectric Temperature Controller

The ILX Lightwave LDT-5525B is a high-precision thermoelectric temperature controller designed for laser diode and optoelectronic component testing. It delivers exceptional temperature stability and accuracy across a wide control range, with bipolar current source output and multiple operating modes to support diverse experimental and production workflows.

## Technical Specifications

• **Temperature Control Range:** −99°C to +199°C
• **Output Power:** Up to 24 W
• **Output Current:** Up to 4 A
• **Compliance Voltage:** 6 V @ 4 A
• **Temperature Stability:** Typical drift <±0.004°C; short-term (1 hr) <±0.004°C; long-term (24 hr) <±0.01°C
• **Control Algorithm:** Hybrid Smart-Integrator
• **Current Limit Accuracy:** ±50 mA (0–4.0 A range)
• **Output Ripple/Noise:** <1 mA rms
• **Display Resolution:** 0.1°C
• **TEC Output Type:** Bipolar current source

## Key Features

• Three operating modes: Constant Temperature, Constant Sensor Resistance, Constant Current
• Adjustable current limiting and compliance voltage for safe TE module operation
• Large green LED display for real-time temperature readout
• Hybrid Smart-Integrator algorithm ensures fast settling and minimal overshoot
• Closed-case calibration via front panel or USB interface with automatic non-volatile memory storage

## Sensor Compatibility & Calibration

Supports NTC thermistors (2-wire, 25–450,000 Ω typical), AD590 series IC sensors (8 V bias), LM335 series (0.6 mA bias), and RTD sensors. Selectable thermistor sensing current (10 µA or 100 µA). Two-point calibration for IC sensors; Steinhart-Hart two-constant calibration for thermistors.

## Typical Applications

• Laser diode testing and frequency stabilization
• IR detector cooling
• Electronic device characterization
• Optoelectronic component control and testing

## Integration

USB 2.0 interface supports remote operation. LabVIEW instrument drivers available. Operating environment: 0°C to 40°C, <80% RH non-condensing.