Avago 8.5GBd SMF光收发器方案

Avago公司的AFCT-57D5ATPZ是8.5/4.25/2.125GBd SMF光纤通路收发器,支持单模光纤的吉比特高速连接. AFCT-57D5ATPZ具有数字诊断功能,能实时监视发送光功率,接收光功率,激光器的偏压电流,温度以及电源.本文介绍了AFCT-57D5ATPZ功能方框图, 典型应用配置图和电源滤波电路图.

8.5/4.25/2.125 GBd SMF Transceiver with Digital Diagnostic, SFP, RoHS Compliant

Avago Technologies’ AFCT-57D5ATPZ optical transceiver supports high-speed serial links over singlemode optical fiber at signaling rates up to 8.5 GBd. Compliant with Small Form Pluggable (SFP) Multi Source Agreement (MSA) mechanical and electrical specifications for LC Duplex transceivers, ANSI Fibre Channel for FC-PI-4 and FC-PI-2 for gigabit applications. The part is electrically interoperable with SFP conformant devices.

The AFCT-57D5ATPZ is a multi-rate 1310nm DFB SFP which ensures compliance to 8.5/4.25/2.125 GBd Fibre Channel specifications without the need for Rate Select. The AFCT-57D5ATPZ will ignore both Rate Select pin and control bit inputs (ie. no connect inside the SFP). This simplifies Fibre Channel host auto-negotiation algorithms, layout and software.

The AFCT-57D5ATPZ has isolated signal and chassis SFP grounds to maximize flexibility in host system applica¬tions.

AFCT-57D5ATPZ主要特性:
Compliant to Restriction on Hazardous Substances (RoHS) directive
Diagnostic features per SFF-8472 “Diagnostic Monitoring Interface for Optical Transceivers”
Real time monitoring of:
Transmitted optical power
Received optical power
Laser bias current
Temperature
Supply voltage
Rate Select not required
Wide temperature and supply voltage operation (-10°C to 85°C) (3.3 V ± 10%)
SFP Plus Applications
Transceiver specifications per SFP (SFF-8074i) Multi-Source Agreement and SFF-8472 (revision 10.3)
8.5 GBd Fibre Channel operation for FC-PI-4 800-SM-LC-L
4.25 GBd Fibre Channel operation for FC-PI-4 400-SM-LC-L
2.125 GBd Fibre Channel operation for FC-PI-4 200-SM-LC-L
Link lengths up to 10km at 8.5/4.25/2.125 GBd with single mode fiber
LC Duplex optical connector interface conforming to ANSI TIA/EIA604-10 (FOCIS 10A)
1310nm Distributed Feedback Laser (DFB) source tech¬nology
IEC 60825-1 Class 1/CDRH Class laser eye safe
Enhanced EMI performance for high port density ap¬plications



图1.AFCT-57D5ATPZ功能方框图



图2.AFCT-57D5ATPZ典型应用配置图



图3.AFCT-57D5ATPZ电源滤波电路图