MAX3863 Datasheet | Maxim Integrated

Description The MAX3863 is designed for direct modulation of laser diodes at data rates up to 2.7Gbps. An automatic power-control (APC) loop is incorporated to maintain a constant average optical power. Modulation pensation is available to increase the modulation current in proportion to the bias current. The optical extinction ratio is then maintained over temperature and lifetime. The laser driver can modulate laser diodes at amplitudes up to 80m A. Typical (20% to 80%) edge speeds are 50ps. The MAX3863 can supply a bias current up to 100m A. External resistors can set the laser output levels. The MAX3863 includes adjustable pulse-width control to minimize laser pulse-width distortion. The device offers a failure monitor output to indicate when the APC loop is unable to maintain the average optical power. The MAX3863 accepts differential CML clock and data input signals with on-chip 50Ω termination resistors. If a clock signal is available, an input data-retiming latch can be used to reject input pattern-dependent jitter. The laser driver is fabricated with Maxim’s in-house second-generation Si Ge process. - Single +3.3V Power Supply - 58m A Power-Supply Current - Up to 2.7Gbps (NRZ) Operation - - - - - - - - - - On-Chip Termination Resistors Automatic Power Control (APC) pensation for Constant Extinction Ratio Programmable Modulation Current Up to 80m A Programmable Bias Current Up to 100m A 50ps Typical Rise/Fall Time Pulse-Width Adjustment Circuit Selectable Data-Retiming Latch Failure Detector Mark-Density Monitor Features - Current Monitors - ESD Protection Ordering Information PART MAX3863EGJ MAX3863E/D- TEMP RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 32 QFN Dice PKG CODE G3255-1 - - Dice are designed and guaranteed to operate from -40°C to +85°C, but are tested only at TA = +25°C Applications SONET and SDH Transmission Systems 30 BIASMAX 32 RTEN Pin Configuration 28 MODP 3.2Gbps Data munications Add/Drop Multiplexers Digital Cross-Connects...