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MAX3865 - 2.5Gbps Laser Driver with Automatic Modulation Control

General Description

The MAX3865 is designed for direct modulation of laser diodes at data rates up to 2.5Gbps.

Key Features

  • are all implemented on an 81mil ✕ 103mil die; the MAX3865 is also available as a 32-pin QFN package. o Single +3.3V or +5V Power Supply o 68mA Supply Current o Up to 2.5Gbps (NRZ) Operation o Feedback Control for Constant Average Power o Feedback Control for Constant Extinction Ratio o Programmable Bias Current Up to 100mA o Programmable Modulation Current Up to 60mA o 84ps Rise/Fall Time o Selectable Data Retiming Latch o Bias and Modulation Current Monitors o Failure Detector o ESD Protection.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX3861 2.7Gbps Post Amp
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MAX3866 2.5Gbps / +3.3V Combined Transimpedance/Limiting Amplifier
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MAX3869 +3.3V / 2.5Gbps SDH/SONET Laser Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2247; Rev 1; 4/02 2.5Gbps Laser Driver with Automatic Modulation Control General Description The MAX3865 is designed for direct modulation of laser diodes at data rates up to 2.5Gbps. It incorporates two feedback loops, the automatic power-control (APC) loop and the automatic modulation-control (AMC) loop, to maintain constant average optical output and extinction ratio over temperature and laser lifetime. External resistors or current output DACs may set the laser output levels. The driver can deliver up to100mA of laser bias current and up to 60mA laser modulation current with a typical (20% to 80%) edge speed of 84ps. The MAX3865 accepts differential clock and data input signals with on-chip 50Ω termination resistors. The inputs can be configured for CML or other high-speed logic.