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25G SFP28 850 nm 300m

Ascent’s SFP28 25Gb/s transceiver is an integrated fiber optic transceiver that provides a high-speed serial link at signaling rates up to 25.78 Gb/s. It is a single- channel, pluggable, fiber-optic module for short-range data communication and interconnect Ethernet applications. This module is designed to operate over multimode fiber systems using a nominal wavelength of 850nm. It has a transmission distance of up to 300 m on OM3 and 400 m on OM4 multi-mode fibers. The optical interface uses duplex LC receptacle. This module incorporates proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service. The SFP28-25LP-85-03 module has the rate adaption and its operating temperature is ranging from 0°C~70°C for commercial usage and -40°C ~85°C for industrial usage.

·         Supports up to 25.7813 Gb/s bit rates

·         25Gbps serial optical interface

·         850nm VCSEL transmitter and GaAs PIN PD receiver

·         Rate Adaptation

·         Operating temperature：

       Commercial (0°C~70°C)

       Industrial (-40°C~85°C)

·         Maximum link length of 300m via OM3 multimode Fiber (MMF)

·         Maximum link length of 400m via OM4 multimode Fiber (MMF)


Absolute Maximum Ratings

Parameter

Symbol

Min.

Typ.

Max.

Unit

Storage Temperature

TS

-40

-

85

°C

Relative Humidity

RH

0

-

85

%


Recommended Operating Conditions

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Case Temperature

Tc

SFP28-25LP-85-03

0


70

°C

SFP28-25LP-85-03A

-40


85


Power Supply Voltage

Vcc


3.15

3.30

3.45

V

Bit Rate

BR



10.3125G&25.78125


Gbps


Optical Characteristics 

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Transmitter







Center Wavelength

A


840


860

nm

RMS Spectral Width

Pm




0.6

nm

Average Optical Power

Pavg


-5


2.4

dBm

Optical Modulation Amplitude

POMA


-5


3

dBm

Average Launch Power of OFF Transmitter

POFF




-30

dBm

Extinction Ratio

ER


3



dB

Optical Return Loss Tolerance





12

dB

Receiver







Center Wavelength

A


840

850

860

nm

Damage Threshold



3.4



dBm

Receive Power Overload



2.4



dBm

Receiver Reflectance





-12

dB

Receiver Sensitivity

SENS

Note1



-10.3

dBm

LOS Assert

Losh


-30



dBm

LOS De-Assert

Losd




-13

dBm

LOS Hysteresis

Losh


0.5



dB

Notes:

1. Measured with a 25.78125G, PRBS-31 NRZ, ER>3.5dB, BER<5E-5.

Electrical Characteristics

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Power Consumption





1

W

Supply Current

Icc




300

mA


Digital Diagnostic Monitor Accuracy

Parameter

Accuracy

Unit

Internally Measured Transceiver Temperature

+/-3

°C

Internally Measured Transceiver Supply Voltage

+/-3

%

Measured Tx Bias Current

+/-10

%

Measured Tx Output Power

+/-3

dB

Measured Rx Received Average Optical Power

+/-3

dB


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                                 Mechanical Dimensions
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