VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7807

Photodetector/Transimpedance Amplifier

Family for Optical Communication

G52363-0, Rev 2.1

Page 1

04/05/01

© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

Features

Applications

General Description

The VSC7807 integrated Photodetector/Transimpedance Amplifier provides a highly integrated solution

for converting 850nm light from a fiber optic communications channel into a differential output voltage. The

benefits of Vitesse Semiconductor’s Gallium Arsenide H-GaAs process are fully utilized to provide very high

bandwidth and low noise in a product with a large optically active area for easy alignment. The sensitivity, duty

cycle distortion and jitter meet or exceed all Fibre Channel and Gigabit Ethernet application requirements. The

VSC7807 is available in either die form, flat-windowed packages or ball-lens packages.

By using a Metal-Semiconductor-Metal (MSM) photodetector with a monolithic integrated transimpedance

amplifier, the input capacitance is lowered which allows for a larger optically active area than in discrete photo-

detectors. Integration also allows superior tracking over process, temperature and voltage between the photode-

tector and the amplifier, resulting in higher performance. The VSC7807 can easily be used in developing Fibre

Channel Electro-Optic Receivers which exhibit very high performance and ease of use.

VSC7807 Block Diagram

• Integrated Photodetector/Transimpedance Amplifier

Optimized for High-Speed Optical Communications

Applications

• Fibre Channel/Gigabit Ethernet-Compatible

• High Bandwidth: 1300MHz

• Low Input Noise Equivalent Power: 2.2µW

• Large Optically Active Area

• Single 3.3V Power Supply

• 2.125Gb/s Data Rate

• 70µm Optically Active Area

• Packages: TO-46, TO-56, Bare Die

• Gigabit Ethernet Optical Receivers

• Fibre Channel Optical Receivers

• ATM Optical Receivers

• SONET/SDH

• System Interconnect

+3.3V

DOUTP

DOUTN

Both DOUTP and DOUTN are back-terminated to 25

Ω.