Uncompromising Precision for Critical Laser Systems
The ATLS250MA104 is not just a laser driver; it's a stability assurance module. Designed from the ground up for precision, its core architecture eliminates the common pitfalls of current drift and electrical noise that plague sensitive optical systems.
1. Unmatched Noise Performance: The Silent Guardian
At the heart of its design is an ultra-low noise output of <0.6µA RMS (0.1Hz-10Hz). This exceptionally quiet operation ensures that your laser's output is pure and free from current-induced intensity noise, which is critical for applications like interferometry, high-resolution spectroscopy, and coherent optical communications where signal integrity is paramount.
2. Robust Stability Across Temperature & Time
Precision must be consistent. The ATLS250MA104 features a built-in temperature compensation network that maintains output current stability within ±0.5mA across an operating range of -30°C to 60°C. This means your experiments or processes yield reliable results regardless of ambient thermal fluctuations.
3. High-Speed Control with Full Programmability
Whether you need steady-state operation or dynamic modulation, this driver delivers. It offers:
- High-Speed Modulation: A bandwidth of 4.67MHz with rise/fall times as fast as 75ns enables direct digital or analog modulation for pumping, switching, and communication applications.
- Dual Analog Control: Independently set the precise drive current (0-250mA via the LIS pin) and a safe current limit (via the LIMS pin) using simple 0-2.5V analog signals, preventing accidental laser damage.
- Smart System Integration: An onboard low-noise 2.5V reference, a real-time current monitor output (LIO), a loop-good digital signal (LPGD), and an internal temperature monitor (TMPO) provide all necessary hooks for microcontroller-based monitoring and closed-loop control systems.
4. Built-In Protection & Ease of Use
Engineered for reliability, the module includes:
- Complete Self-Protection: Automatic shutdown for over-temperature (120°C) and over-current conditions.
- Flexible Power Management: Operates from a single 3.1V to 5.5V supply and features Standby, Operational, and Shutdown modes controlled via a single pin (SBDN).
- EMI Shielding: A 6-sided metal enclosure protects the controller and surrounding electronics from electromagnetic interference.
- Safe Start-Up: A dedicated "dummy load" procedure is outlined to safely validate system operation before connecting expensive laser diodes.
Ideal Applications:
- Driving pump laser diodes for Erbium-Doped Fiber Amplifiers (EDFA) and Distributed Feedback (DFB) lasers.
- Diode-Pumped Solid-State Laser (DPSSL) systems.
- Semiconductor Optical Amplifier (SOA) and fiber laser systems.
- Any research or industrial application requiring high-stability, low-noise current for diode lasers.
Conclusion
The Analog Technologies ATLS250MA104 sets a new standard for precision laser diode control. By combining laboratory-grade noise performance with robust protection and flexible programmability in a compact, shielded package, it solves the critical challenge of stable laser operation in real-world environments. For system designers who cannot compromise on performance, the ATLS250MA104 is the definitive choice.
