MAX3930

10.7Gbps Laser Diode Drivers

Ultra-Low Jitter from Low-Power 10.7Gbps Laser Driver

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Overview

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)

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.

The MAX3931/MAX3932 have an alternate pad out with respect to the MAX3930. The MAX3931 includes the series damping resistor R_D on chip.

The MAX3930/MAX3931/MAX3932 also include an adjustable pulse-width control circuit to minimize laser pulse-width distortion.

Applications