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 50? 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

? 50? 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