SFP 1.25G Bidi Tx1310nm/Rx1550nm 20KM LC

General Description:

Brand : D-TECH 

Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA), The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the FP laser and the PIN photo-detector .The module data link up to 20km in 9/125um single mode fiber. The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system can also disable the module via I2C. Tx Fault is provided to indicate the degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal from the receiver or the link status with the partner. The system can also get the LOS (or link) or disable/fault information via I2C register access. 

Features:

  • Up to 1250 MB/s data links
  • 1310nm FP laser transmitter and PIN photo-detector
  • Up to 20km on 9/125µm SMF
  • Hot-pluggable SFP footprint
  • Duplex LC/UPC-type pluggable optical interface
  • Low power dissipation
  • Metal enclosure, for lower EMI
  • RoHS-compliant and lead-free
  • Support a Diagnostic Monitoring interface
  • Single +3.3V power supply
  • Compliant with SFF-8472
  • Case operating temperature:
    • Commercial: 0 ~ +70°C
    • Extended: -10 ~ +80°C
    • Industrial: -40 ~ +85°C

Application:

  • Switch to Switch Interface
  • Gigabit Ethernet
  • Switched Backplane Applications
  • Router/Server Interface
  • Other Optical Link

Absolute Maximum Ratings:

It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module

ParameterSymbolMinMaxUnitNotes
Storage TemperatureTS-4085°C 
Power Supply VoltageVCC-0.33.6V 
Relative HumidityRH595%(non-condensation)
Damage ThresholdTHd5 dBm 

Recommended Operating Conditions and Power Supply Requirements:

ParameterSymbolMinTypicalMaxUnitNotes
Operating Case TemperatureTOP070°CCommercial 
  -1080°CExtended 
  -4085°CIndustrial 
Power Supply VoltageVCC3.1353.33.465V 
Data Rate  1250 Mb/s 
Control Input Voltage is high.  2 VCC 
Control Input Voltage is low. 00.8 V 
Link Distance (SMF)D10  km9/125um

 

Specification of Transmitter Electrical Characteristics:

ParameterSymbolMin.TypicalMaxUnitNotes
Power ConsumptionP0.85 0.9WCommercial
      Industrial
Supply CurrentIcc250 270mACommercial
      Industrial
Transmitter Single-ended Input Voltage ToleranceVCC-0.3 4.0V 
Differential Input Voltage SwingVin,pp2002400 mVpp 
Differential Input ImpedanceZin90100110Ohm 
Transmit Disable Assert Time 5  us 
Transmit Disable VoltageVdisVCC-1.3VCCV  
Transmit Enable VoltageVenVee-0.30.8V  
Receiver Differential Output Voltage SwingVout,pp500900 mVpp 
Differential Output ImpedanceZout90100110Ohm 
Data Output Rise/Fall TimeTr/Tf100  ps20% to 80%
LOS Assert VoltageVlosHVCC-1.3VCCV  
LOS De-assert VoltageVlosLVee-0.30.8 V 

Digital Diagnostic Functions:

ParameterSymbolMin.Max.UnitNotes
Temperature monitor: absolute errorDMI_Temp-33degCOver-operating temperature
Supply voltage monitor absolute errorDMI_VCC-0.150.15VFull operating range
RX power monitor: absolute errorDMI_RX-33dB 
The current monitorDMI_bias-10%10%mA 
TX power monitor absolute errorDMI_TX-33dB 

Hear some related SFP links below:

SFP 1.25G BIDI 1550Tx/1310Tx 40KM LC:

SFP 1.25G 1550Tx/1310Rx 60KM LC:

SFP 1.25G BIDI 1550Tx/1490Rx 80KM LC:

SFP 1.25G BIDI 20KM 1310TX/1550RX SC:

SFP 1.25G BIDI 20KM 1550TX/1310RX LC:

SFP 1.25G BIdI 1310Tx/1550Rx 10KM, LC:

SFP 1.25G 1310nm 20km LC Duplex:

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