GAOTek SFP+ CWDM Transceiver with 8.5Gb/s (40km, 1270~1330nm)

This 8.5Gigabit 1270 ~1330nm SFP+ CWDM Transceiver is used with single mode optical fiber to reach up to 24.85 miles (40km) transmission distance.

Description

Overview:

This 8.5Gigabit 1270 ~1330nm SFP+ CWDM Transceiver is used with single mode optical fiber to reach up to 24.85 miles (40km) transmission distance. This Coarse Wavelength Division Multiplexing enhanced small form-factor pluggable (SFP+ CWDM) has a CWDM DFB Laser type transmitter and a PIN type receiver. It provides a unique enhanced digital diagnostic monitoring interface. It complies with Fiber Channel FC-PI-4 800-SM-LC-L, 8G, 4G and, 2G Fiber Channel, SFF-8472, SFF-8431 and RoHS standards.

Key Features:

  • 1270 ~1330nm CWDM DFB Laser and PIN receiver.
  • Up to 24.85 miles (40km) transmission.
  • Up to 8.5 Gb/s Bi-Directional data links.
  • Single 3.3V power supply.
  • Compliant with SFP+ MSA with LC connector.
  • Metal enclosure, for lower EMI.
  • Hot-pluggable SFP+ footprint.
  • 2-wire interface with integrated Digital Diagnostic monitoring.
  • Management specifications compliant with SFF 8472.
  • Class 1 laser product complies with EN 60825-1.
  • Case operating temperature range from 23°F to 158°F (-5°C to +70°C).

Technical Specifications:

Protocol2-Wire Serial communication Protocol
Working RangeUp to 24.85 miles (40km)
Memory256-byte memory map in EEPROM
StandardsSFF-8472, SFF-8431 and SFF-8432.                   8G, 4G and, 2G Fiber channel.                           Class1 laser product complies with EN 60825-1. Fiber Channel FC-PI-4 800-SM-LC-L.                     RoHS compliant.
Data rate8.5Gb/s
Wavelength1270 ~1330nm
TransmitterCWDM DFB laser
ReceiverPIN
Fiber optic cable9/125 mm
ConnectorLC
Transmitter output optical Power-1 dBm to +4 dBm
Receiver Sensitivity-15 dBm
Receiver Input Saturation Power0.5 dBm
Supply Voltage3.3V
Transmitter Input Differential Impedance100Ω
Dimensions2.3in x 0.54in x 0.49in (L 58.4mm x W13.7mm x   H 12.6mm)
Storage Temperature-40 °F to 185 °F (-40°C to 85°C)
Case Operating Temperature23 °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

Ordering Information:

Product ID MediaWavelengthTransmission DistanceTemperature RangeSupply Current
GAO- SFPPCW -108

 

Single-mode fiberRefer to Wavelength selection24.85 miles (40km)23 °F to 158 °F (-5°C to 70°C)450mA

Wavelength selection:

WavelengthClasp color code
1270nmGray
1290nmGray
1310nmGray
1330nmPurple

 Test pattern:

  • Measured with conformance test signal for PRBS 231 -1 and BER<10-12 with data rate 8.5Gb/s.

PRBS31 test pattern represents a pseudorandom binary sequence with a repetition period of 231 -1. The sequence is defined in IEEE STD 802.3.ae

BER<10-12   test represents bit error rate testing provides a measurable and useful indication of the performance of the system.

  • 20 – 80 % Measured with Module Compliance Test Board and OMA test pattern.

Digital Diagnostics Functions:

  • GAOTek GAO-SFPPCW -108 transceiver support the 2-wire serial communication protocol as defined in the SFP MSA.
  • Additionally, GAOTek SFP+ 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 SFP+ Serial id provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer and other information.
  • SFP+ 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

Electrical characteristics:

ParameterSymbolMinTypeMaxUnitNote
Transmitter      
Input Differential ImpedanceRin100
Single ended data input swingVin, pp1801200mV
Transmit Disable VoltageVDVcc–1.3VccV
Transmit Enable VoltageVENVeeVee+ 0.8V
Transmit Disable Assert Time10us
Receiver      
Differential data output swingVout,pp300850mV
Data output rise timetr38ps
Data output fall timetf38ps
LOS FaultVLOS faultVcc–1.3VccHOSTV1
LOS NormalVLOS normVeeVee+0.8V1
Power Supply RejectionPSR100mVpp2

Notes:

  1. Loss of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
  2. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value applied through the recommended power supply filtering network.

Optical Characteristics:

ParameterSymbolMinTypeMaxUnit
Transmitter     
Output Optical PowerPOUT-1+4dBm
Optical Wavelengthλcλc -6.5λc +6.5nm
Optical Extinction RatioER3.5dB
Spectrum Band Width (-20dB)σ1nm
RINRIN-128dB/Hz
Transmitter and Dispersion PenaltyTDP3dB
Transmitter Jitter (peak to peak)FC-PI-4 rev 7.0 requirements
Side-mode Supression ratioSMSR30dB
Receiver     
Receiver SensitivityRSENS-15dBm
Wavelength RangeλC12701610nm
Input Saturation Power (Overload)Psat-1dBm
LOS AssertLOSA-30dBm
LOS De -AssertLOSD-18dBm
LOS Detect Hysteresis0.5dB

PIN out Diagram:

PIN Descriptions:

PinSymbol Name/DescriptionNote
1VEETTransmitter Ground (Common with Receiver Ground)1
2TFaultTransmitter Fault2
3TDisTransmitter Disable.3
4SDA2-wire Serial Interface Data Line4
5SCL2-wire Serial Interface Clock Line4
6MOD_ABSModule Absent. Grounded within the module5
7RS0Rate Select 0 

6

8LOSLoss of Signal indication. Logic 0 indicates normal operation7
9RS1No connection required1
10VEERReceiver Ground (Common with Transmitter Ground)1
11VEERReceiver Ground (Common with Transmitter Ground)1
12RD-Receiver Inverted DATA out. AC coupled
13RD+Receiver Non-inverted DATA out. AC coupled
14VEERReceiver Ground (Common with transmitter Ground)1
15VCCRReceiver power Supply
16VCCTTransmitter Power supply
17VEETTransmitter Ground (Common with receiver Ground)1
18TD+Transmitter Non-Inverted DATA in. AC Coupled.
19TD-Transmitter Inverted DATA in.AC Coupled.
20VEETTransmitter Ground1

Notes:

  1. Circuit ground is internally isolated from ground.
  2. TFault is an open collector or drain output.
  • It 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 exceeding the preset alarm thresholds.
  • Low output indicates normal operation. In the low state output is pulled to <0.8V
  1. Laser output disabled when it is open or TDis > 2.0V, enabled on TDis < 0.8V.
  2. Should be pulled up with 4.7kΩ to 10kΩ on host board to a voltage between 2.0V and 3.6V.
  3. MOD_ABS pulls the line low to indicate the module is plugged in.
  4. Internally pulled down as per SFF-8431.
  5. Loss of signal (LOS) is open collector output.
  • It should be pulled up with 4.7 kΩ to 10 kΩ on host board to a voltage between 2.0V and 3.6V.
  • Logic 0 indicates normal operation.
  • Logic 1 indicates loss of signal.

Mechanical Specifications:

Improved Pluggable form factor specification Comply to SFF-8432

HOST-Transceiver Interface Block Diagram:

Regulatory Compliance:

FeatureReferencePerformance
Laser Eye SafetyFDA 21CFR 1040.10, 1040.11 IEC/EN 60825-1,2Class 1 laser product
Component RecognitionIEC/EN 60950, ULCompatible with standards
ROHS2002/95/ECCompatible with standards
Electrostatic discharge(ESD)IEC/EN 61000-4-2Compatible with standards
EMCEN61000-3Compatible with standards
Electromagnetic Interference(EMI)FCC Part 15 Class B EN 55022 Class B (CISPR 22A)Compatible with standards