Description
The F-tone Networks FTCS-B2725G-20DI is designed for Bi-directional 25G serial optical data communications by using 1270nm transmitter and 1330nm receiver. It is a high performance module for 25G Ethernet and Option 10 CPRI applications which operate up to 20km. This module incorporates F-tone Networks proven circuit and technology to provide reliable long life, high performance, and consistent service.

Features
● Hot-pluggable SFP28 form factor
● Up to 25Gbps data rate
● Maximum link length of 20km
● Single LC receptacle, Bi-directional
● CWDM DFB laser and APD photo-detector
● 1270nm Tx/1330nm Rx
● Internal CDR on both Transmitter and Receiver channel
● Single 3.3V power supply
● Power dissipation < 1.8W
● RoHS 2.0 compliant (2011/65/EU, lead free)
● Industrial case temperature range: -40°C to 85°C

Applications
● 25G Ethernet
● CPRI Option 10
● Support 10G CPRI option 8 by CDR bypass

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Supply Voltage

Vcc

0

3.6

V

Storage Temperature

Ts

-40

+85

°C

Operating Humidity

-

5

85

%

Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

Industrial

Tc

-40

+85

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc

461

mA


Electrical Specifications

Parameter

Symbol

Min

Typical

Max

Unit

Differential Input Impedance

Zin

90

100

110

ohm

Differential Output Impedance

Zout

90

100

110

ohm

Differential Input Voltage Amplitude1

ΔVin

300

1100

mVp-p

Differential Output Voltage Amplitude2

ΔVout

500

800

mVp-p

Input Logic Level High

VIH

2.0

Vcc

V

Input Logic Level Low

VIL

0

0.8

V

Output Logic Level High

VOH

Vcc-0.5

Vcc

V

Output Logic Level Low

VOL

0

0.4

V

Note:
1、Differential input voltage amplitude is measured between TxnP and TxnN.
2、Differential output voltage amplitude is measured between RxnP and RxnN.

Optical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Data rate

BR

25.78

Gbps

Centre Wavelength

λc

1270

nm

Spectral Width (-20dB)

σ

1

nm

Side Mode Suppression Ratio

SMSR

30

dB

Average Output Power

Pavg

-2

6

dBm

Extinction Ratio

ER

3.5

dB

Eye Mask Coordinates

{0.31, 0.4, 0.45, 0.34, 0.38, 0.4}

Receiver

Data rate

BR

25.78

Gbps

Centre Wavelength

λc

1330

nm

Rx Damage threshold

-3

dBm

Average Power at Receiver

-4

dBm

Receive reflectance(max)

-26

dB

Receiver Sensitivity (OMA)

Psens

-

-

-19

dBm

1

LOS De-Assert

LOSD

-21

dBm

LOS Assert

LOSA

-31

dBm

LOS Hysteresis

0.5

dB

Notes1: 
1、For 25G-L2T with FEC, receiver sensitivity is defined at 5E-5 BER level, not 1E-12 BER level.

Mechanical Dimensions4

Ordering information

Part Number

Product Description

FTCS-B2725G-20DI

25Gbps, 1270nm Tx/1330nm Rx; SFP28, 20km, -40ºC ~ +85ºC

 

 

 

 

 

 

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注：本产品有全国产化型号可选

Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.

The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.