GENERAL DESCRIPTION
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).

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
   32-lead, 5 mm × 5 mm LFCSP_VQ package

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