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GENERAL DESCRIPTION

The ADN2943 chipset consists of two components, the ADN2845 and the ADN2844. The ADN2845 is a 10.709 Gbps laser diode driver. The ADN2845 eliminates the need to ac couple since it can deliver 80 mA of modulation while dc coupled to the laser diode. It is intended to be copackaged with the laser to minimize bond lengths, which improves performance of the optical transmitter. For transmission line applications, contact HSN Application Group at fiberoptic.ic@analog.com.

FEATURES

Data Rates from 9.952 Gbps to 10.709 Gbps

Typical Rise/Fall Time 25 ps/23 ps

Bias Current Range 3 mA to 80 mA

Modulation Current Range 5 mA to 80 mA

Monitor Photodiode Current 50 μA to 1200 μA

Closed-Loop Control of Both Average Optical Power and Extinction Ratio

Laser Fail and Laser Degrade Alarms

Automatic Laser Shutdown, ALS

Dual MPD Functionality for Wavelength Control

CML Data Inputs

50 Internal Data Terminations

3.3 V Single-Supply Operation

Driver Supplied in Dice Format

APPLICATIONS

SONET OC-192, SDH STM-64

Supports 10.667 Gbps and 10.709 Gbps FEC Rates

10 Gb Ethernet IEEE802.3ae