ADN2847 - Analog Devices

ADN2847 3 V Dual-Loop 50 Mbps to 3.3 Gbps Laser Diode Driver

The ADN2847 uses a unique control algorithm to control both average power and extinction ratio of the laser diode, LD, after initial factory setup. 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). Op.

Features

50 Mbps to 3.3 Gbps Operation Single 3.3 V Operation Typical Rise/Fall Time 80 ps Bias Current Range 2 mA to 100 mA Modulation Current Range 5 mA to 80 mA Monitor Photodiode Current 50 ␮A to 1200 ␮ A Dual MPD Functionality for DWDM 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 48-Lead (7 mm ؋ 7 mm) LFCSP Package 32-Lead (5 mm ؋ 5 mm) LFCSP Package Available in Die Form 3 V Dual-Loop 50 Mbps to 3.3 Gbps Laser Diode Driver.