Description
This product is a 25Gb/s transceiver module designed for optical communication compliant to Ethernet 25G ER Lite standard. Its high performance 25G application up to 30km/40km(with FEC) Links. The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the SFP+ Multi-Source Agreement (MSA).

Features
● Hot-pluggable SFP28 form factor
● Up to 30Km reach for G.652 SMF without FEC
● Up to 40Km reach for G.652 SMF with FEC
● Internal CDR on both Transmitter and Receiver channel
● Transmitter: cooled 25Gb/s 1310nm EML TOSA
● Receiver: 25Gb/s APD ROSA
● Single 3.3V power supply
● Power dissipation < 2W
● Commercial case temperature range: 0°C to +70°C
● Duplex LC receptacle
● Digital diagnostics functions are available via the I2C interface
● RoHS-6 compliant

Applications
● 25GBASE-ER Lite Ethernet
● CPRI/eCPRI Option 10

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Supply Voltage

Vcc

0

3.6

V

Operating Case Temperature

Top

0

+70

°C

Storage Temperature

Ts

-40

+85

°C

Operating Humidity

-

5

85

%

Damage Threshold, each Lane

THd

-3.0

dBm

 

Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Operating Case Temperature

Tc

0

+70

°C

Power Supply Voltage

Vcc

3.13

3.3

3.47

V

Power Supply Current

Icc

600

mA

Data Rate, each lane

25.78125

Gb/s

Data Rate Accuracy

-100

100

ppm

Link distance with G.652(without FEC)

30

Km

Link distance with G.652(with FEC)

40

Km

 

Optical and Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Data rate

BR

25.78

Gbps

SDD11

TP1

CEI-28G-VSR Equation 13-19

dB

SDC11,SCD11

TP1

CEI-28G-VSR Equation 13-20

dB

Stressed Input Test

TP1a

CEI-28G-VSR Section 13.3.11.2.1

Differential data input swing

VIN,PP

150

1100

mV

Input Differential Impedance

ZIN

90

100

110

Ω

Centre Wavelength

λc

1295

1310

1325

nm

Spectral Width (-20dB)

σ

1

nm

Side Mode Suppression Ratio

SMSR

30

dB

Average Output Power

Pavg

-3

6

dBm

Optical Modulation Amplitude

0

4

dBm

Extinction Ratio

ER

7

dB

Transmitter and dispersion penalty

2.7

dB

Rin20OMA

-130

dB/HZ

Optical return loss tolerance

20

dB

Transmitter reflectance

-26

dB

Average Launch Power OFF transmitter

Poff

-30

dBm

Transmitter eye definition {X1,X2,X3,Y1,Y2,Y3}Hit ratio 5E-5

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

1

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

Data rate

BR

25.78

Gbps

SDD22

TP4

CEI-28G-VSR Equation13-19

dB

SDC22, SCD22

TP4

CEI-28G-VSR Equation 13-21

dB

SCC22

TP4

-2

dB

Transition Time,20% to 80%

TP4

9.5

ps

Vertical Eye Closure(VEC)

TP4

5.5

dB

Eye Width at E-15 probability

EW15

0.57

UI

Eye Height at E-15 probability

EH15

228

mV

Average Receive Power

-23

-5

dBm

Unstressed Receiver Sensitivity (OMA)

SEN

-19

dBm

BER=5E-5

Receiver Reflectance

-26

dB

LOS De-Assert

LOSD

-26

dBm

LOS Assert

LOSA

-24

dBm

LOS Hysteresis

0.5

dB

Differential data output swing

Vout,PP

300

900

mV

LOS

High

2.0

Vcc

V

Low

0.8

V

Notes 1: Transmitter eye compliant to IEEE 802.3cc 25G-ER;

Mechanical Dimensions2

Ordering information

Part Number

Product Description

FTCS-1325G-40D

25Gbps, 1310nm; SFP28, 30Km/40km(FEC), DDM   0ºC ~ +70ºC

FTCS-1325G-40DI

25Gbps, 1310nm; SFP28, 30Km/40km(FEC), DDM   -40ºC ~ +85ºC

 

 

 

 

 

 

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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.