1.25G 1310nm 20km LC SFP
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1.25G 1310nm 20km LC SFP

The transceiver consists of three sections: a 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.
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Product Introduction

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

■The transceiver consists of three sections: a 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.

 

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1260

1310

1360

nm

 

Spectral Width (RMS)

∆λ

 

 

4

nm

 

Average Output Power

Pout

-9

 

-3

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

Ω

 

TX Disable

Disable

 

2

 

Vcc

V

 

Enable

 

0

 

0.8

V

 

TX Fault

Fault

 

2

 

Vcc

V

 

Normal

 

0

 

0.8

V

 

Receiver

Centre Wavelength

λc

1260

 

1580

nm

 

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

 

Vcc

V

 

Low

 

 

0.8

V

 

 

Timing and Electrical

Parameter

Symbol

Min

Typical

Max

Unit

Tx Disable Negate Time

t_on

 

 

1

ms

Tx Disable Assert Time

t_off

 

 

10

µs

Time To Initialize, including Reset of Tx Fault

t_init

 

 

300

ms

Tx Fault Assert Time

t_fault

 

 

100

µs

Tx Disable To Reset

t_reset

10

 

 

µs

LOS Assert Time

t_loss_on

 

 

100

µs

LOS De-assert Time

t_loss_off

 

 

100

µs

Serial ID Clock Rate

f_serial_clock

 

 

400

KHz

MOD_DEF (0:2)-High

VH

2

 

Vcc

V

MOD_DEF (0:2)-Low

VL

 

 

0.8

V

 

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