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 ?A_RMS @ 0.1Hz?C10Hz) 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 ?A_RMS (0.1Hz?C10Hz)
• 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

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