VSC7971

TRANSPORT PRODUCTS 1 to 4 Gbps TIAs 1 to 4 Gbps Transimpedance Amplifiers with Photocurrent Monitor BENEFITS: Source Terminated Differential Outputs With Linear Photocurrent Monitor Offers Diagnostic Capabilities Without Sacrificing High Signal Integrity On-chip Filter Provides Positive Bias to the Photodetector, Eliminating the Need for External Components, Saving Space and Cost Available in a TO-46 Package, Eliminating Time and Costs Associated With the Design, Assembly and Test of the Receiver P R O D U C T F A M I LY: VSC7773 VSC7971 VSC7973 VSC7970 VSC7972 S P E C I F I C AT I O N S : Input Noise: 550 nA (rms) Supply Current: 25 mA Sensitivity : -23 dBm (long wave) -21.5 dBm (short wave) Max Input Current: 2.2 mA Peak to Peak Current A P P L I C AT I O N S : Power Dissipation: 82.5 mW Gigabit Ethernet Transceivers Supply Voltage: 3.3 V Fibre Channel Transceivers (1x, 2x and 4x) Operating Temperature from -40°C to 85°C SONET/SDH Transceivers SONET/SDH Transponders 4.25 Gbps Receiver Optical Sub-Assemblies - VSC7773: TO-46 (with 850nm PIN detector) - VSC7970: Dice or TO-46 (with 1310nm/1550nm PIN detector) - VSC7971: Dice or TO-46 (with 1310nm/1550nm PIN detector) - VSC7972: Dice or TO-46 (with 850nm pin detector) - VSC7973: Dice or TO-46 (with 850nm pin detector) F E AT U R E S : BLOCK DIAGRAM (Die): Single +3.3 V Supply VSC7971 5 kΩ Differential Transimpedance Low Power Consumption for SFP/SFF Applications Differential Outputs with Linear Current Monitor FILTER 10pF 500Ω VCC +3.3V GND Outputs need to be AC-coupled VOUTP 50Ω IN 50Ω Available as Bare Dice or in a 4-pin or 5-pin TO-46 Package Monitor VOUTN 0.1µF 0.1µF IMON PB-TIAFAMILY-001 1 to 4 Gbps TIAs 1 to 4 Gbps Transimpedance Amplifiers with Photocurrent Monitor GENERAL DESCRIPTION: The VSC7773, VSC7970, VSC7971, VSC7972, and VSC7973 are high performance Transimpedance Amplifiers (TIA) for Ethernet, Fibre Channel and SONET applications. The VSC7773 support rates from 1 Gbps to 4.25 Gbps. The other parts support rates up to 2.5 Gbps. They feature 5 kΩ differential transimpedance and 1.8 GHz bandwidth with source-terminated differential outputs. All five parts have a linear current monitor, adding diagnostic capabilities, and simplifying optical alignment during the manufacturing process. A space saving filter connection is provide for positive bias to the photodetector through an on-chip 500Ω resistor to VCC, allowing for easy assembly on a TO-46 header. A P P L I C AT I O N D I A G R A M : TO-46Receiver Dice VSC7959 VSC7961 Limiting Amplifier Monitor CDRs VSC8123 VSC8221 VSC8222 XCVRs VSC8142 VSC8245 VSC8147 IMON VSC7939 VSC7940 Laser Driver For more information on Vitesse Products visit the Vitesse web site at www.vitesse.com or contact Vitesse Sales at (800) VITESSE or sales@vitesse.com ©2004 Vitesse Semiconductor Corporation Vitesse, ASIC-Friendly, FibreTimer, TimeStream and Snoop Loop are trademarks of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective holders. 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. 741 Calle Plano Camarillo, CA 93012, USA Tel: +1 805.388.3700 Fax: +1 805.987.5896 www.vitesse.com