FCBG125SD1CZ5-WX COHERENT | Alldatasheet
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Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 1 Product Specification 25G SFPwire® SFP+ Active Optical Cable FCBG125SD1Cxx-WX PRODUCT FEATURES Hot-pluggable SFP+ cable ends Supports 25.7813 Gb/s bit rate SFI limiting interface Input equalization and output emphasis controls Single 3.3V power supply Low power dissipation Temperature range: 0°C to 70°C Rigid pull-tab
APPLICATIONS
25G Ethernet for Intra- and Inter-Rack datacenter interconnection The 25G SFPwire® FCBG125SD1Cxx-WX is an SFP+ Active Optical Cable designed for use in 25G Ethernet links. The electrical interface of the 25G SFPwire® is compliant with SFF-84311 and the receiver side is limiting. The 25G SFPwire ® provides non-adaptive input equalization and output emphasis controls as per SFF-84722. The mechanical specifications of the 25G SFPwire® SFP+ ends are compatible with SFF-84323 and is RoHS compliant as described in Application Note AN-20384,5. PRODUCT SELECTION FCBG125SD1Cxx-WX Cable Length Options (Orange Jacket Cables) xx = Z5 0.5m xx = 05 5m xx = 01 1.0m xx = 07 7m xx = A5 1.5m xx = 09 9m xx = 02 2.0m xx = 10 10m xx = B5 2.5m xx = 15 15m xx = 03 3.0m xx = 20 20m xx = C5 3.5m xx = 30 30m Please contact Coherent for custom length options.
Pin Symbol Name/Description Ref.
1 V EET Transmitter Ground (Common with Receiver Ground) 1
4 SDA 2-wire Serial Interface Data Line 2
5 SCL 2-wire Serial Interface Clock Line 2
7 RS0 No connection required
9 RS1 No connection required
10 V EER Receiver Ground (Common with Transmitter Ground) 1
11 V EER Receiver Ground (Common with Transmitter Ground) 1
14 V EER Receiver Ground (Common with Transmitter Ground) 1
15 V CCR Receiver Power Suppl y 7
16 V CCT Transmitter Power Suppl y 7
17 V EET Transmitter Ground (Common with Receiver Ground) 1
18 TD+ Transmitter Non-Inverted DATA in. AC Coupled. 19 TD- Transmitter Inverted DATA in. AC Coupled.
20 V EET Transmitter Ground (Common with Receiver Ground) 1
- Circuit ground is internally isolated from chassis ground.
- Open collector/drain output, which should be pulled up with a 4.7k – 10k Ohms resistor on the host
board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V.
- A high output indicates a transmitter fault caused by either the TX bias current or the TX output power
- Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
- Internally pulled down per SFF-8431 Rev 4.1.
- LOS is open collector output. Should be pulled up with 4.7k – 10k on host board to a voltage between
2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal. Figure 1. Diagram of Host Board Connector Block Pin Numbers and Names.
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 3 II. Absolute Maximum Ratings Exceeding the limits below may damage the active optical cable permanently. Parameter Symbol Min Typ Max Unit Ref. Maximum Supply Voltage Vcc -0.5 4.0 V Storage Temperature T S -40 85 C 1 Case Operating Temperature T A 0 70 C Relative Humidity RH 0 85 % 2 Notes: 1. Assumes no mechanical load force on the unit. Ensuring no mechanical load force requires a cable bend radius of >70 mm. Otherwise, the storage temperature range is -20 to 75°C. 2. Non-condensing. III. Electrical Characteristics (each cable end, TOP = 0 to 70 C, VCC = 3.14 to 3.46 Volts) Parameter Symbol Min Typ Max Unit Ref. Supply Voltage Vcc 3.14 3.46 V Supply Current Icc 310 mA Transmitter Input differential impedance R in 100 1 Differential data input swing Vin,pp 180 700 mV Transmit Disable Voltage V D 2 Vcc V Transmit Enable Voltage V EN Vee Vee+ 0.8 V Receiver Differential data output swing Vout,pp 300 850 mV 2 Data output rise time, fall time tr 28 ps 3 LOS Fault V LOS fault 2 Vcc HOST V 4 LOS Normal V LOS norm Vee Vee+0.8 V 4 Power Supply Noise Tolerance VccT/VccR Per SFF-8431 Rev 4.1 mVpp 5 Notes: 1. Connected directly to TX data input pins. AC coupling from pins into laser driver IC. 2. Into 100 differential termination. 3. 20 – 80% . Measured with Module Compliance Test Board and OMA test pattern. Use of four 1’s and four 0’s in sequence in the PRBS^9 is an acceptable alternative[1]. 4. LOS is an open collector output. Should be pulled up with 4.7k – 10k on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V. 5. Testing methodology per [1]. IV. Input Equalization and Output Emphasis Controls Coherent FCBG125SD1Cxx-WX provide non-a daptive input equalization and output emphasis controls, allowing the host to select pre-set levels of optimization of the electrical high-speed signals of the transceiver’s transmitter input and receiver output, via the 2-wire communication, as defined in the SFF-8472 [2].
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 4 V. General Specifications Parameter Symbol Min Typ Max Units Ref. Bit Rate BR 25.78125 Gb/s Bit Error Ratio BER 10 -8 1 Notes: 1. Pre-FEC, tested with a PRBS 231 – 1. VI. Environmental Specifications The following table shows the operating temperature range of the FCBG125SD1Cxx-WX. Parameter Symbol Min Typ Max Units Ref. Case Operating Temperature T op 0 70 °C VII. Regulatory Compliance The FCBG125SD1Cxx-WX SFPwire, which cont ains laser devices, is a Class 1 laser product and complies with 21CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007, an d it complies with EN(IEC) 60825 Edition 1.2 regulations. The 25G SFPwire® is RoHS compliant per Directive 2011/65/EU[4,5]. Copies of certificates are available at Coherent upon request.
8432 specifications and provide a black rigid pull tab. Figure 2. FCBG125SD1Cxx-WX Mechanical Dimensions.
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 6 FCBG125SD1Cxx-WX SFPwire® cable details Description Min Typ Max Units Notes Jacket Material PVC PVC Jacket Color Orange Aqua available upon request Flammability Rating OFNR Plenum Cable option available upon request Outer Diameter 2.8 3.0 3.2 m m Tensile Load (Short Term) 200 N Tensile Load (Long Term) 100 N Crush Resistance 10 N/mm FOTP-41 Impact Resistance 0.5 Nꞏm FOTP-25 Flexing 300 C ycles FOTP-104 Twist Bend Exceeds FOTP-85 Cable to SFP+ Plug Connection 90 Newtons Bend Radius (Short Term) 25 m m Bend Radius (Long Term) 30 m m Durability 100 C ycle Min
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 7 VIX. PCB Layout and Bezel Recommendations Figure 3.
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 8 Figure 4.
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 9 X. Host - Active optical cable end Interface Block Diagram Figure 5.
SFPwire® 25G AOC Product Specification Finisar Transceiver Coherent Corp. April 2023 Rev B03 – Coherent Corp. Confidential Page 10 XI. References 1. “Specifications for Enhanced 8.5 and 10 Gigabit Small Form Factor Pluggable Module ‘SFP+ ‘”, SFF Document Number SFF-8431, Revision 4.1. 2. “Diagnostic Monitoring Interface for Optical Transceivers”, SFF Document Number SFF-8472, revision 12.2, November 21, 2014. 3. “Improved Pluggable Formfactor”, SFF Document Number SFF-8432, Revision 4.2, April 18, 2007. 4. Directive 2011/65/EU of the European Parliament and of the Council “on the restriction of the use of certain hazardous substances in electrical and electronic equipment”. Certain products may use one or more exemption as allowed by the directive. 5. “Application Note AN-2038: II-VI Implementation of RoHS Compliant Transceivers”, Coherent Corp., January 21, 2005. XII. For More Information Coherent Corp.
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