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DS1862A Key Features

  • Implements XFP MSA Requirements for Digital Diagnostics, Serial ID, and User Memory I2C-patible Serial Interface Automat
  • Seven Monitored Channels for Digital Diagnostics (Five Basic Plus Two Auxiliary)
  • Internal Calibration of Monitored Channels (Temp, VCC2/3, Bias Current, Transmitted, and Received Power)
  • Programmable Quick-Trip Logic for Turning Off Laser for Eye Safety
  • Access to Monitoring and ID Information
  • Programmable Alarm and Warning Thresholds
  • Operates from 3.3V or 5V Supply
  • 25-Ball CSBGA, 5mm x 5mm Package Internal or External Temperature Sensor -40°C to +100°C Operating Temperature Range One

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DS1862A Description

The DS1862A is a closed-loop laser-driver control IC with built-in digital diagnostics designed for XFP MSA. The laser control function incorporates automatic power control (APC) and allows extinction ratio control though a temperature-indexed lookup table (LUT). The DS1862A monitors up to seven analog inputs, including temperature and monitor diode (MD) current, which are used to regulate the laser bias current and...