GENERAL DESCRIPTION

The ADN2841 uses a unique control algorithm to control both average power and extinction ratio of the laser diode (LD) after initial factory set up. External component count and PCB area are low as both power and extinction ratio control are fully integrated. Programmable alarms are provided for laser fail (end of life) and laser degrade (impending fail). The ADN2841 has circuitry for a second monitor photodiode which enables DWDM wavelength control.

FEATURES

50 Mbps to 2.7 Gbps Operation

Typical Rise/Fall Time 80 ps

Bias Current Range 2 to 100 mA

Modulation Current Range 5 to 80 mA

Monitor Photodiode Current 50 μA to 1200 μA

Closed-Loop Control of Power and Extinction Ratio

Laser Fail and Laser Degrade Alarms

Automatic Laser Shutdown, ALS

Dual MPD Functionality for DWDM

Optional Clocked Data

Full Current Parameter Monitoring

5 V Operation

48-Lead LFCSP Package

32-Lead LFCSP Package (Reduced Functionality)

APPLICATIONS

DWDM Dual MPD Wavelength Fixing

SONET OC-1/3/12/48

SDH STM-1/4/16

Fiber Channel

Gigabit Ethernet