MAX3934

10.7Gbps Compact Laser Diode Driver

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Overview

1.30mm x 1.35mm Die Size
Integrated Compensation Network
Single +5V or -5.2V Power Supply
73mA Supply Current
Up to 10.7Gbps (NRZ) Operation
Programmable Laser Bias Current Up to 60mA
Programmable Modulation Current Up to 80mA
Polarity Control
25ps Output Edge Speed
CML-/PECL-Compatible Signal Inputs
Integrated Input Termination Resistors

The MAX3934 is a compact +5V or -5.2V laser driver designed to directly modulate a laser diode at data rates up to 10.7Gbps. The driver provides externally programmable laser biasing and modulation currents. DC-coupling with an integrated compensation network, consisting of a series-damping resistor and a shunt RC, makes the MAX3934 ideal for compact subassemblies.

The MAX3934 accepts a differential CML or PECL data signal and includes 50Ω on-chip termination resistors. It delivers a 1mA to 60mA laser bias current and a 20mA to 80mA laser modulation current with a typical edge speed of 25ps (20% to 80%). A high-bandwidth, fully differential signal path is internally implemented to minimize jitter accumulation. Additional features include a data polarity control, bias current, and modulation current monitors.

Applications