DS1862 Description
The DS1862 is a closed-loop laser-driver control IC with built-in digital diagnostics designed for XFP MSA. The laser control function incorporates average power control (APC) and allows extinction ratio control though a temperature indexed look-up table (LUT). The DS1862 monitors up to seven analog inputs, including temperature and monitor diode (MD) current, which are used to regulate the laser bias current and...
DS1862 Key Features
- Implements XFP MSA Requirements for Digital Diagnostics, Serial ID, and User Memory
- I2C-patible Serial Interface
- Automatic Power Control (APC)
- Extinction Ratio Control with Look-Up Table
- 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