General Description
The MAX3930/MAX3931/MAX3932 are designed for direct modulation of laser diodes at data rates up to 10.7Gbps. They provide adjustable laser bias and modulation currents and are implemented using Maxim’s second-generation in-house SiGe process.
The MAX3930 accepts differential CML clock and data input signals and includes 50Ω on-chip termination resistors. It delivers a 1mA to 100mA laser bias current and a 20mA to 100mA modulation current with a typical (20% to 80%) 25ps rise time. An input data retiming latch can be used to reject input pattern-dependent jitter if a clock signal is available.

Features
♦ Single +5V or -5.2V Power Supply
♦ 108mA Supply Current
♦ Operates to 10.7Gbps
♦ 50Ω On-Chip Input Termination Resistors
♦ Programmable Modulation Current to 100mA
♦ Programmable Laser Bias Current to 100mA
♦ 25ps Rise Time (MAX3930/MAX3932)
♦ Adjustable Pulse-Width Control
♦ Selectable Data Retiming Latch
♦ ESD Protection
♦ Internal Series Damping Resistor (MAX3931)

Applications
   SONET OC-192 and SDH STM-64
   Transmission Systems
   Up to 10.7Gbps Optical Transmitters
   Section Regenerators