Low Noise Constant Current Laser Controller ATLS1A117

The ATLS1A117 is a low noise constant current laser controller module designed for driving diode lasers with up to 1A output current.
When powered from a 10V supply, it can provide an output voltage from 0.5V to 8.5V, making it suitable for many single-diode and multi-diode laser loads.

Inside the module, a temperature compensation network keeps the output current very stable over a wide operating temperature range.
Combined with its ultra-low output current noise (<0.5 µA_RMS @ 0.1Hz–10Hz) and high current stability (typ. ±0.5mA),
the ATLS1A117 is ideal for applications that demand low noise and low drift laser drive performance, such as DPSSL, EDFA, SOA, fiber lasers, and direct diode lasers.

Main Features

• Maximum output current: 1A
• Ultra-low current noise: <0.5 µA_RMS (0.1Hz–10Hz)
• High accuracy and stability: output current error typically ±0.5mA
• Wide power supply range: 3.3V to 10V
• Low dropout voltage to maximize usable compliance voltage
• Independent setting of output current and current limit by control voltages
• Analog modulation bandwidth up to 1.2MHz, rise/fall time down to ~200nS
• On-board 2.5V low-noise reference for setting current or for external ADC/DAC
• Loop-good indication output and internal temperature monitor output
• Built-in protections: over-temperature shutdown and current-limit protection
• Compact 6-sided metal shielded package for excellent EMI immunity

Typical Applications

• DPSSL and solid-state laser pumping
• EDFA, SOA and fiber laser driver stages
• Low noise direct diode laser sources
• Precision laboratory, instrumentation and OEM laser systems

For detailed electrical characteristics, pin descriptions and application circuits, please refer to the


DATASHEET

.