TRANSPORT PHYSICAL LAYER VSC7965 PON Integrated 155 Mbps to 1.25 Gbps Burst-mode Laser Driver and Limiting Amplifier A P P L I C AT I O N S : BPON, GE-PON, GPON burst-mode laser driver S P E C I F I C AT I O N S : Package size: 5 mm x 5 mm QFN VSC7965 Maximum modulation = 80 mA Typical core power = 330 mW Operating temperature range = -40 °C to 100 °C F E AT U R E S : BENEFITS: APC loop requires no initialization phase Laser driver is ready to transmit upon power up VSC7965 meets the specification for BPON, GE-PON, and GPON Allows the VSC7965 to be used in both PON and SFP module solutions Burst enable input supports LVPECL, LVDS, and LVTTL output levels Allows PON module to interoperate with multiple upstream devices Selectable resistance on monitor diode input Improves accuracy of the monitor diode input by allowing the user to select the resistance and capacitance in the input Laser driver crossing point control Enables the user to adjust the level of the crossing point on the laser driver output Built-in eye safety support No external components are required to meet IEC-60825 eye safety specifications A P P L I C AT I O N D I A G R A M : BPON ONU Module VSC7965 MON_SEL Limiting Amplifier TIA at 1490 nm Burst-mode Laser Driver Laser at 1310 nm Fault and Control Logic Connector Triplexor SPI Analog MUX Analog Video Receive at 1555 nm Downstream Video at 1555 nm Downstream Receive Data at 1490 nm Upstream Data at 1310 nm ADC Microcontroller CATV Receive Video Amplifier VPPD-01136 Revision 1.1 VSC7965 PON Integrated Burst-mode Laser Driver and Limiting Amplifier GENERAL DESCRIPTION: VSC7965 The VSC7965 is a multirate 1.25 Gbps integrated current, average power, and the limiting amplifier loss of signal laser driver and limiting amplifier for Passive threshold. The VSC7965 is equipped with SFP-compliant fault Optical Network applications optimized to reduce indicators, redundant disable control, Automatic Power Control, module cost. The device is intended to drive temperature sensor, various signal monitors, and robust eye safety distributed feedback (DFB) and Fabry Perot (FP) features. The VSC7965 is available in a 5mm x 5mm 32-pin QFN lasers. A standard SPI port is provided for programming integrated plastic package. digital-to-analog converters for laser bias current, modulation BLOCK DIAGRAMS: BSRC = VCC Laser Driver VCC VCC 15 Ω 15 Ω IMOD 5Ω OUT OUTN 15 Ω 5Ω DATA DATAN IMOD IBIAS BSNK BSNKN BEN IMD MD Modulation and Bias Control and Montoring VCC TX_FAULT BENN_TX_DIS 10 kΩ AOUT 10 kΩ Limiting Amplifier VCC LA_SQSRC DCRST[1:0] 7 kΩ LA_SQFORCE DCRST1 Peak Detector and Control RPK_STAGE Output Control LOSMON LOS LA_SQMON DCRST[1:0] 50 Ω DCRST2 LIN 100 Ω 50 Ω LOUT S1 S2 S3 S4 S5 LOUTN TM 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, NexSAS, VersaCAT, GigaStream, HawX, SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, 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 © 2005–2006 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 [email protected]