High-Bandwidth Demand increasing demand high-bandwidth different appli

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High-Bandwidth Demand increasing demand high-bandwidth different appli

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2.5Gbps Laser Diode Driver
High-Bandwidth Demand increasing demand high-bandwidth different applications related Internet, telecommunications, data communications, fiber channel, etc., created tremendous need fiber rich networks components that support them. meet these high bandwidth requireSony
Pre-Amp Post-Amp
ments, fast product turn-around time dominates customer's decision-making process vendor selection. exponential growth optical technology this high bandwidth demand, along with competition optical components, makes customers more demanding specific about product requirements.
Optical Fiber Photo Diode
DeMux
Phase Modulation
Switch Fabric Sony Optical Fiber Laser Diode Laser Diode Driver
Multiplexer Convert
Phase Modulation
Figure Optical Networking Block Diagram
Industry's Requirements After studying market, customers must decide which component appropriate their application. They must then develop optical module based project's fundamental requirements such Time market Better, faster, most cost efficient, scalable Development cycle Meets Standard's specifications
Marketing technical support provided vendor Evaluation board availability and, above all, brand which important from service point view Compact package size needed, available even form Complete specification application notes product Vendor roadmaps products pipeline Back solution event product unavailability
©Copyright 2001, Sony Electronics Inc. rights reserved.
Qualifying Tests Qualification these devices time consuming. customer needs perform multiple tests, including: Electro-optical test, requiring several weeks Life time tests, taking months Fulfillment standards (ITU Bellcore) specifications Check characteristics power consumption Confirm vendor-provided temperature characteristics package qualification Sony's Laser Diode Driver Sony line optical communication products promising road including 10Gbps follow-on products. Based criteria concerns already mentioned, these high-performance optical networking products Laser Diode Driver (LDD). ideal product fiber optics applications, CXB1828 high speed with Automatic Power Control (APC) part Sony's family Gbps optical networking high-performance optical transmitter receiver functions. CXB1828 possesses design flexibility while meeting need high performance, reliability, cost. comes compact 32pin VQFN plastic package with fine lead pitch 0.4mm proven fiber optics applications. typical SONET application fully utilizing this product OC-48 module, producing data rate 2.488 Gbps.
About Sony's Laser Diode Driver CXB18128 single high-speed monolithic Laser Diode Driver with positive referenced emitter coupled logic (PECL) current mode logic (CML) input level. CXB1828 built-in Automatic Power Control Circuitry (APC) bias current Signal Duty Correction Circuit. function this device provide bias output current modulation output current, which between 50mA. available compact package also wafer form. overall characteristics make Laser Diode Driver better, faster, more cost efficient scalable. Typical applications include fiber optics-based communications Gigabit Ethernet. CXB1828 complete 2.448Gbps laser diode driver powered with single +3.3V supply control diode bias current achieved through automatic power control circuitry. circuit provided maintain constant laser power transmitters that monitor photodiode. CXB1828 accepts differential PECL data inputs provides output currents. PECL input data buffer maximum data rate. shutdown input alarm circuit disables both modulation current driver laser diode bias generator under various conditions. shutdown input disable output current. This chip also provides on-chip input termination Ohms.
Features Directly drives laser diode cost fabricated bipolar process Maximum data rate 2.5Gbps Power Reset function Automatic Power Control (APC) bias control Built Shutdown, Input Alarm Reset circuitry Acceptable PECL inputs Internal duty cycle correction circuit Activity error detector function Typical rise time 100ps power consumption 48mA Available both wafer form VQFN package On-chip input termination Compact package size 4.8mm 4.8mm Industry standard interface Single +3.3V supply voltage
Application Typical applications are: SONET /SDH transmission systems modules OC-48 fiber optic modules SONET/SDH: 622Mbps, 2.5Gbps Gigabit Ethernet: 1.25Gbps
Laser Diode
Laser Diode Driver
Multiplexer Convert
Phase Modulation
Figure Typical Transmitter Unit SONET/SDH Fiber System
Conclusions Benefits Directly drives laser diode power consumption Internal duty cycle correction circuit Built Shutdown, Input Alarm Reset circuitry PECL/ Inputs acceptable Compact package size 4.8mm 4.8mm
fiber optics data communication products growing rapid pace, higher speed, compact sizes increased functionality imminent. Even though greater integration possible (though desirable cases), this provides customer more room flexibility. Embracing this growing market trend, Sony will provide more integrated devices with highspeed optical components that reach 10Gbps. These devices will available wafer form well traditional packaging. Sony's product roadmap potentially includes products such Post-Amp, Laser Diode Driver (LDD), Clock Data Recovery (CDR), SERDES Pre-Amp.

High-Bandwidth Demand increasing demand high-bandwidth different appli

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