Maxim MAX3795ETG

Драйвер лазерного диода4,25 Гбит/с2,97 В ~ 3,63 В

Overview

The MAX3795ETG is a high-speed VCSEL driver for small-form-factor (SFF) and small-form-factor pluggable (SFP) fiber optic transmitters. It contains a bias generator, a laser modulator, and comprehensive safety features. The automatic power control (APC) adjusts the laser bias current to maintain average optical power over changes in temperature and laser properties. The driver accommodates common-cathode and differential configurations. The MAX3795ETG operates up to 4.25Gbps. It can switch up to 15mA of laser modulation current and source up to 15mA of bias current. Adjustable temperature compensation is provided to keep the optical extinction ratio within specifications over the operating temperature range. The MAX3795ETG interfaces with the Dallas DS1856/DS1859 to meet SFF-8472 timing and diagnostic requirements. The MAX3795ETG accommodates various VCSEL packages, including low-cost TO-46 headers. The MAX3795ETG safety circuit detects faults that could cause hazardous light levels and disables the VCSEL output. The safety circuits are compliant with SFF and SFP multisource agreements (MSAs). The MAX3795ETG is available in a compact 4mm x 4mm, 24-pin thin QFN package and operates over the -40°C to +85°C temperature range. The MAX3795ETG is pin-for-pin compatible with the MAX3740A and is available in lead-free packages.

Features

Applications

• Communication device
• Personal communication device
• Portable telephone
• Electronic notebook
• Camera
• Video equipment
• CPU power supply
• Switching regulator
• Multiple-power supply system
• Digital audio player