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DS1862A - XFP Laser Control and Digital Diagnostic IC

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).

Features

  • es.
  • Implements XFP MSA Requirements for Digital Diagnostics, Serial ID, and User Memory I2C-Compatible Serial Interface Automatic Power Control (APC) Extinction Ratio Control with Lookup Table DS1862A.
  • 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.

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Datasheet preview – DS1862A

Datasheet Details

Part number DS1862A
Manufacturer Maxim Integrated Products
File Size 649.14 KB
Description XFP Laser Control and Digital Diagnostic IC
Datasheet download datasheet DS1862A Datasheet
Additional preview pages of the DS1862A datasheet.

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Full PDF Text Transcription

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Rev 0; 10/08 www.DataSheet4U.com XFP Laser Control and Digital Diagnostic IC General 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 extinction ratio. Warning and alarm thresholds can be programmed to generate an interrupt if monitored signals exceed tolerance. Calibration is also provided internally using independent gain and offset scaling registers for each of the monitored analog signals.
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