Description
The F-tone Networks FTCS-25G-LR-2XX-xxx is a single-Channel, Pluggable, Fiber-Optic SFP28 for 25 Gigabit Ethernet and CPRI Option 10 Applications, it’s specially reliable design to enable liquid immersion environment. It is a high performance module for short-range data communication and interconnect applications which operate at 25.78125 Gbps up to 10km. This module is designed to operate over single mode fiber systems using a nominal wavelength of 1310nm. The electrical interface uses a 20 contact edge type connector. The optical interface of pigtail is optional. 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
● Supports 25Gbps data rate
● Maximum link length of 10km
● Uncooled 1310nm DML transmitter and PIN receiver
● Internal CDR on both Transmitter and Receiver channel
● Optional pigtail type and length
● Single 3.3V power supply
● Power dissipation < 1.5W
● RoHS compliant (2011/65/EU, lead free)
● Case operating temperature
      Commercial: 0 ~ +60℃
      Industrial: -40 ~ +85℃

Applications
● 25GBASE-LR Ethernet
● CPRI Option 10
● Liquid immersion environment
● 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

Tc

0

+60

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc

450

mA

Liquid immersion depth

10

m

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

Notes:
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

1295

1310

1325

nm

Spectral Width (-20dB)

σ

1

nm

Side Mode Suppression Ratio

SMSR

30

dB

Average Output Power

Pavg

-7

2

dBm

Optical Modulation Amplitude

OMA

-4

2.2

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

1295

1310

1325

nm

Average Power at Receiver

2

dBm

Receive reflectance(max)

-26

dB

Receiver Sensitivity (OMA)

Psens

-

-

-12.0

dBm

1

Stressed receiver sensitivity(OMA)

-9.5

dBm

2

LOS De-Assert

LOSD

-12

dBm

LOS Assert

LOSA

-30

dBm

LOS Hysteresis

0.5

dB

Notes: 
1. For 25G-LR with FEC, receiver sensitivity is defined at 5E-5 BER level, not 10-12 BER level.
2. Measured with conformance test signal at TP3 for BER=5E-5.

Mechanical Dimensions7071

Ordering information

Part Number

Product Description

FTCS-25G-LR-2XX-xxx

25Gbps, 1310nm, SFP28, SMF, liquid immersion,0ºC ~ +60ºC

FTCS-25G-LR-2XX-xxxI

25Gbps, 1310nm, SFP28, SMF, liquid immersion,-40ºC ~ +85ºC

XX：pigtail connector type, optional: LC/FC/MPO

xxx：pigtail length in meters.

 

 

 

 

 

 

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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.