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1.25Gbps SFP Bi - Directional Transceiver, 20km

1.25Gbps SFP Bi - Directional Transceiver, 20km

  • Dual data-rate of 1.25Gbps/1.63Gbps operation

Features

  • Dual data-rate of 1.25Gbps/1.63Gbps operation
  • 1550nm DFB laser and PIN photodetector for 20km transmission
  • 1310nm FP laser and PIN photodetector for 20km transmission
  • Compliant with SFP MSA and SFF-8472 with simplex LC receptacle
  • Digital Diagnostic Monitoring:
  • Internal Calibration or External Calibration
  • Compatible with SONET OC-24-LR-1
  • Compatible with RoHS
  • +3.3V single power supply
  • Operating case temperature:
  • Standard : 0 to +70°C

Applications

  • Gigabit Ethernet
  • Fiber Channel
  • Switch to Switch interface
  • Switched backplane applications
  • Router/Server interface
  • Other optical transmission systems

Description

The SFP-BIDI transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps and 20km transmission distance with SMF.

 ansceiver consists of three sections: a DFB/FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements.

The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

Standard

Tc

0

 

+70

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc

 

 

300

mA

 

Data Rate

Gigabit Ethernet

 

 

1.25

 

 

Gbps

Fiber Channel

 

 

1.063

 

Mechanical Dimensions

Ordering information

Part Number

Product Description

ME-G53-20LD

1550nm/1310nm,     1.25Gbps,    LC,    20km,    0°C~+70°C,     with DDM

ME-G35-20LD

1310nm/1550nm,     1.25Gbps,    LC,    20km,    0°C~+70°C,     with DDM

ME-G53-20LD:            (DFB and PIN, 1550nm 20km Reach)

ME-G35-20LD:             (FP and PIN, 1310nm, 20km Reach)

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

Tx 1550

λc

1530

1550

1570

nm

 

Tx 1310

1260

1310

1360

Spectral Width (-20dB)

Tx 1550

∆λ

 

 

1

nm

 

Tx 1310

 

 

4

Side Mode Suppression Ratio

Tx 1550

SMSR

30

 

 

dB

 

Average Output Power

Pout

-9

 

0

dBm

1

Extinction Ratio

ER

9

 

 

dB

 

Optical Rise/Fall Time (20%~80%)

tr/tf

 

 

0.26

ns

 

Data Input Swing Differential

VIN

400

 

1800

mV

2

Input Differential Impedance

ZIN

90

100

110

 

 

TX Disable

Disable

 

2.0

 

Vcc

V

 

Enable

 

0

 

0.8

V

 

 

TX Fault

Fault

 

2.0

 

Vcc

V

 

Normal

 

0

 

0.8

V

 

Receiver

Centre Wavelength

Rx 1310

λc

1260

 

1360

nm

 

Rx 1550

1480

 

1580

Receiver Sensitivity

 

 

 

-23

dBm

3

Receiver Overload

 

-3

 

 

dBm

3

LOS De-Assert

LOSD

 

 

-24

dBm

 

LOS Assert

LOSA

-30

 

 

dBm

 

LOS Hysteresis

 

1

 

4

dB

 

Data Output Swing Differential

Vout

400

 

1800

mV

4

 

LOS

High

2.0

 

Vcc

V

 

Low

 

 

0.8

V

 

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