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BIDI SFP 155M 1490nm / 1310nm 40km DDM

Features


  • Up to 155Mbps data-rate
  • 1490nm DFB laser and PIN photo detector for 40km transmission
  • Compliant with SFP MSA and SFF-8472 with simplex LC(SC)receptacle
  • Digital Diagnostic Monitoring: Internal Calibration or External Calibration
  • Compatible with RoHS
  • +3.3V single power supply
  • Operating case temperature:
  • Standard: 0 to +70°C

Applications


  1. SDH STM-1, S-1.1, L-1.1, L-1.2
  2. SONET OC-3 IR1, LR1, LR2
  3. Other optical links
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BIDI SFP 155M 1490nm / 1310nm 40km DDM

                                                                                                

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1470

1490

1510

nm

 

Spectral Width (RMS)

∆λ

   

4

nm

 

Average Output Power

Pout

-14

 

-8

dBm

1

Extinction Ratio

ER

9

   

dB

 

Data Input Swing Differential

VIN

400

 

1800

mV

2

Input Differential Impedance

ZIN

90

100

110

Ω

 

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

λc

1260

 

1360

nm

 

Receiver Sensitivity

     

-32

dBm

3

Receiver Overload

 

-3

   

dBm

3

LOS De-Assert

LOSD

   

-32

dBm

 

LOS Assert

LOSA

-40

   

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

 

 

 

Q&A

------------------------------------------------------------------------------------------------------------

Q: What is the MSA?

 

A: The MSA power supply noise rejection filter is required on the host PCB to meet data sheet performance. The MSA filter incorporates an inductor which should be rated 400mADC and 1Ωserial resistance or better.

 

It should not be replaced with a ferrite. The required filter is illustrated in Figure 3. The MSA also specifies that 4.7K to 10KΩ pull-up resistors for TX_FAULT, LOS, and MOD_DEF0,1,2 are required on the host PCB.

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