ADN2848
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ADN2848

3.3 V Dual-Loop 50 Mbps to 1.25 Gbps Laser Diode Driver

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Part Details
Features
  • 50 Mbps to 1.25 Gbps operation
  • Single 3.3 V operation
  • Bias current range: 2 to 100 mA
  • Modulation current range: 5 to 80 mA
  • Monitor photo diode current: 50 µA to 1200 µA
  • 50 mA supply current at 3.3 V
  • Closed-loop control of power and extinction ratio
  • Full current parameter monitoring
  • Laser fail and laser degrade alarms
  • Automatic laser shutdown (ALS)
  • Optional clocked data
  • Supports FEC rates

Additional Details
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The ADN2848 uses a unique control algorithm to control both the average power and the extinction ratio of the laser diode (LD) after initial factory setup. External component count and PCB area are low because both power and extinction ratio control are fully integrated. Programmable alarms are provided for laser fail (end of life) and laser degrade (impending fail).

Applications

  • SONET OC-1/3/12/24
  • SDH STM-0/1/4
  • Fibre Channel
  • Gigabit Ethernet

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