GAOTek XFP CWDM Transceiver with 8.5 Gb/s

This 8.5 Gigabit 1470~1610nm XFP CWDM Transceiver is used with single mode optical fiber to reach up to 49.72 miles (80km) transmission distance.

GAO-XFPCW-106

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Description

Overview:

This 8.5 Gigabit 1470~1610nm XFP CWDM Transceiver is used with single mode optical fiber to reach up to 49.72 miles (80km) transmission distance. It is designed for serial optical data communications such as 8G Fiber Channel. This Coarse Wavelength Division Multiplexing small form-factor pluggable (XFP CWDM) has a Cooled CWDM EML type transceiver and APD type receiver integrated with a trans-impedance preamplifier (TIA) and signal conditioner. It provides built-in Digital Diagnostics Functions. It complies with 8G Fiber channel and RoHS lead free standards.

Key Features:

  • Up to 49.72 miles (80km) transmission distance.
  • Cooled CWDM EML and APD Receiver
  • Supports 8.5Gb/s Data link.
  • Hot-pluggable XFP footprint
  • Supports Line-side and XFI loopback
  • RoHS-6 Compliant (lead-free)
  • Power dissipation <3.5W
  • Single 3.3 V power supply.
  • Compliance with Fiber Channel FC-PI-4 800-SM-LL-L
  • Full Duplex LC connector
  • No Reference Clock required
  • Built-in digital diagnostic functions
  • AC/AC Coupling according to MSA
  • Case operating temperature range from 23 °F to 158 °F (-5°C to 70°C).

Technical Specifications:

Working Range Up to 49.72 miles (80km)
Standards 8G Fiber Channel

XFP MSA

RoHS-6 compliant.

Memory 256 byte EEPROM
Data rate 8.5Gb/s
Wavelength 1470nm~1610nm
Connector LC
Transmitter CWDM EML
Receiver APD
Transmitter output optical Power 0 dBm to 5 dBm
Fiber type 9/125 mm single-mode
Receiver Sensitivity -24 dBm
Receiver Input Saturation Power -6 dBm
Supply Voltage 3.3 V
Maximum Power Consumption <3.5 W
Transmitter Input Differential Impedance 100Ω
Dimensions 3.07in x 0.72in x 0.45in (L 78mm x W18.3mm x   H 11.4mm)
Relative Humidity 5% to 95%
Storage Temperature -40 °F to 185 °F (-40°C to 85°C)
Case Operating Temperature 23 °F to 158 °F (-5°C to 70°C)

Additional Information:

Applications

Ideal to be used on applications such as

  • Multi-rate 8x/4x/2x Fiber Channel

Order Information:

Product ID Media Wavelength

(nm)

Transmission Distance Temperature Range
GAO-XFPCW -106

 

single-mode fiber 1470~1610nm 49.72 miles (80km)   23 °F to 158 °F (-5°C to 70°C)

 

Wavelength Selection:

Wavelength Clasp Color code
1470 nm Gray
1490 nm Purple
1510 nm Blue
1530 nm Green
1550 nm yellow
1570 nm Orange
1590 nm red
1610 nm Brown

Digital Diagnostics Functions:

  • GAOTek GAO- XFPCW -106 transceiver support the 2-wire serial communication protocol as defined in the XFP MSA.
  • Additionally, GAOTek XFP Transceivers provide a unique enhanced digital diagnostic monitoring interface which allows real-time access to device operating parameters such as transmitter optical power, receiver optical power, transceiver temperature, transceiver supply voltage and laser bias current. It defines an alarm system and warning flags, which alerts the end users when particular operating parameters are outside of a factory set normal range.
  • Standard XFP Serial id provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer and other information.
  • XFP MSA defines a 256-byte memory map in EEPROM that is accessible over a 2 wire serial interface at the 8 bit address 1010000X (A0h).
  • The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.

General Specifications:

Parameter Symbol Min Type Max Unit Note
Bit Rate BR   8.5 Gb/s  
Bit Error Ratio BER     10-12   1
Maximum Supported Distances       80 km  

Notes:

  1. Tested with a 2 31 – 1 PRBS

Electrical characteristics:

Parameter Symbol Min Type Max Unit Note
Module Total Power       3.5 W 1
Transmitter            
Input Differential Impedance Rin 100 2
Single ended data input swing Vin, pp 120 820 mV
Transmit Disable Voltage VD 2.0 Vcc V 3
Transmit Enable Voltage Ven GND GND+ 0.8 V
Transmit Disable Assert Time 10 us
Receiver            
Differential data output swing Vout,pp 340 650 850 mV 4
Data output rise time tr 38 ps 5
Data output fall time tf 38 ps 5
LOS Fault VLOS fault Vcc–0.5 VccHOST V 6
LOS Normal VLOS norm GND GND+0.5 V 6
Power Supply Rejection PSR 7

Notes:

  1. Maximum total power value is specified across the full temperature and voltage range.
  2. After internal AC coupling.
  3. Open circuit.
  4. Into 100 ohms differential termination.
  5. These are unfiltered 20-80% values
  6. Loss of Signal is open collector to be pulled up with a 4.7kΩ – 10kΩ resistor to 3.15 – 3.6V.
  • Logic 0 indicates normal operation.
  • Logic 1 indicates no signal detected.
  1. As per the XFP MSA Specification 1.

Optical Characteristics:

Parameter Symbol Min Type Max Unit
Transmitter          
Average Optical  Power PAVE 0 5 dBm
Optical Wavelength λ λ-6.5 λ+1 λ+6.5 nm
Optical Extinction Ratio ER 9 dB
Average Launch power of transmitter POFF -30 dBm
Side mode Suppression ratio SMSR 30 dB
Tx Jitter Generation(peak-to-peak) Jp-p 0.1 UI
Transmitter and Dispersion Penalty TDP 3.2 dB
Relative Intensity Noise RIN -130 dB/Hz
Receiver          
Receiver Sensitivity PSEN -15.5 dBm
Wavelength Range λC 1270 1610 nm
Input Saturation Power (Overload) Psat 0.5 dBm
Receiver Reflectance Rrx -27 dB
LOS Assert LOSA -28 dBm
LOS De -Assert LOSD -22 dBm
LOS Hysteresis 0.5 dB

PIN Diagram:

PIN Descriptions:

Pin Logic Symbol Name/Description Note
1. GND Module Ground 1
2. VEE5 Optional –5.2 Power Supply – Not required
3. LVTTL-I Mod-Desel Module De-select; When held low allows the module to respond to 2-wire serial interface commands
4. LVTTL-O Interrupt Interrupt (bar); Indicates presence of an important condition which can be read over the serial 2-wire interface 3
5. LVTTL-I TX_DIS Transmitter Disable; Transmitter laser source turned off
6. VCC5 +5 Power Supply
7. GND Module Ground 1
8. VCC3 +3.3V Power Supply
9. VCC3 +3.3V Power Supply
10. LVTTL-I SCL Serial 2-wire interface clock
11. LVTTL-I/O SDA Serial 2-wire interface data line 3
12. LVTTL-O Mod_Abs Module Absent; Indicates module is not present. Grounded in the module. 3
13. LVTTL-O Mod_NR Module Not Ready; GAOTek defines it as a logical OR between RX_LOS and Loss of Lock in TX/RX. 3
14. LVTTL-O RX_LOS Receiver Loss of Signal indicator 3
15. GND Module Ground 1
16. GND Module Ground 1
17. CML-O RD- Receiver inverted data output
18. CML-O RD+ Receiver non-inverted data output
19. GND Module Ground 1
20. VCC2 +1.8V Power Supply – Not required
21. LVTTL-I P_Down/RST Power Down; When high, places the module in the low power stand-by mode and on the falling edge of P_Down initiates a module reset

 

Reset; The falling edge initiates a complete reset of the module including the 2-wire serial interface, equivalent to a power cycle.
22. VCC2 +1.8V Power Supply – Not required
23. GND Module Ground 1
24. PECL-I RefCLK Reference Clock non-inverted input, AC coupled on the host board –Not required 2
25. PECL-I RefCLK- Reference Clock inverted input, AC coupled on the host board – Not required 2
26. GND Module Ground 1
27. GND Module Ground 1
28. CML-I TD- Transmitter inverted data input
29. CML-I TD+ Transmitter non-inverted data input
30. GND Module Ground 1

Notes:

  1. Module circuit ground is isolated from module chassis ground within the module.
  2. A Reference Clock input is not required .If present, it will be ignored.
  3. Open collector; should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 3.15V and 3.6V

PCB Layout and Bezel Recommendations:

XFP Host Board Mechanical Layout (dimensions are in mm)

Mechanical Specifications:

GAOTek’s XFP transceivers are compliant with the dimensions defined by the XFP Multi-Sourcing Agreement (MSA).

XFP transceiver (dimensions are in mm)

Regulatory Compliance:

Feature Reference Performance
Laser Eye Safety FDA 21CFR 1040.10, 1040.11 IEC/EN 60825-1,2 Class 1 laser product
Component Recognition IEC/EN 60950, UL Compatible with standards
ROHS 2002/95/EC Compatible with standards
Electrostatic discharge(ESD) IEC/EN 61000-4-2 Compatible with standards
EMC EN61000-3 Compatible with standards
Electromagnetic Interference(EMI) FCC Part 15 Class B EN 55022 Class B (CISPR 22A) Compatible with standards

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