Product Summary

The VSC7981 is a low-power 10 Gbps laser and modulator driver that is designed for applications such as modules and line cards for OC-192/STM-64 SONET/SDH as well as 10GE/10GFC protocols. The VSC7981 is intended to drive Direct Modulated Lasers (DML) such as Distributed Feedback (DFB) and Fabry-Perot (FP) Lasers with a 25 ohm characteristic impedance. This device is equipped with XFP-compliant fault indicators (FLTN_DISN and EOLN), dual disable control (FLTN_DISN and TX_DIS), Automatic Power Control (APC), temperature sensor, voltage reference, various eye safety features, and Extinction Ratio Control (ERC) with an external micro controller. Device monitors are controlled with set resistors, potentiometers, or Digital-to-Analog Converters (DACs), and monitored with Analog-to-Digital Converters (ADCs) for ultimate flexibility in module design.