VSC7966

TRANSPORT PRODUCTS VSC7966 155 Mbps to 1.25 Gbps Laser Driver and Post Amplifier F E AT U R E S : 4Integrated Laser Driver and Limiting Amplifier 4Digital Control Interface 4Selectable Resistance on Monitor Diode Input 4Laser Driver Crossing Point Control 4Built-in Eye Safety Support BENEFITS: 4Reduces Board Space and Simplifies the Design 4Provides Advance System Diagnostics, Enabling Full Support of SFF-8472 4Improves Accuracy of the Monitor Diode Input by Allowing the User to Select the Resistance and Capacitance in the Input 4Enables the User to Adjust the Level of the Crossing Point on the Laser Driver Output 4No External Components are Required to Meet IEC-60825 Eye Safety Specifications S P E C I F I C AT I O N S : 4Package Size: 5 mm × 5 mm QFP-N 4Maximum Modulation = 80 mA 4Typical Core Power = 330 mW BLOCK DIAGRAM: SFP/SFF Module VSC7964/5/6 MON_SEL VSC797x-WD ROSA Limiting Amplifier Laser Driver SFP/SFF MSA Connector Fault and Control Logic Analog MUX TOSA SPI ADC Microcontroller PB-VSC7966-001 VSC7966 155 Mbps to 1.25 Gbps Laser Driver and Post Amplifier GENERAL DESCRIPTION: The VSC7966 device is a multirate 1.25 Gbps integrated laser driver and limiting amplifier for SONET/SDH, Fast Ethernet, and Gigabit Ethernet applications optimized to reduce module cost. The device is intended to drive distributed feedback (DFB) and Fabry Perot (FP) lasers. A standard SPI port is provided for programming integrated digital to analog converters for laser bias current, modulation current, average power, and the limiting amplifier loss of signal threshold. The VSC7966 device is equipped with SFP-compliant fault indicators, redundant disable control, Automatic Power Control, temperature sensor, various signal monitors, and robust eye safety features. The VSC7966 device is available in a 5 mm x 5 mm 32-pin QFP-N plastic package. Trademarks ™ Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington, PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, VersaCAT, GigaStream, HawX, SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINKOctalMAC, EQ Technology are trademarks in the United States and/or other jurisdictions of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective holders. Copyright © Vitesse Semiconductor Corporation ("Vitesse") retains the right to make changes to its products or specifications to improve performance, reliability or manufacturability. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent right of any manufacturer. 741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com sales@vitesse.com