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100G QSFP28 SR01 BIDI MMF 850nm 100m

Ascent’s QSFP28 100G SR BIDI is a parallel Quad Small Form-factor Pluggable (QSFP28) Bi-Direction optical module which can support dual rate 40Gb/s and 100Gb/s bit rates in an optical communication application compliant to SFF-8636 standards. The module integrates four host electrical data into two optical lanes (by Dual Wavelength VCSEL Bi-Directional Optical Interface, 850nm and 900nm) to allow optical communication over a 2-fiber duplex LC optical multi-mode fiber. Reversely, on the receiver side, the module de-multiplexes 2 sets of optical input signal and converts them to 4 channels of electrical data. An optical fiber ribbon cable with an LC connector can be plugged into the QSFP28 module receptacle. Proper alignment is ensured by the guide pins inside the receptacle. The cable usually cannot be twisted for proper channel to channel alignment. Electrical connection is achieved through an MSA-compliant 38-pin edge type connector. The product is designed with form factor, optical/electrical connection, and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity, and EMI interference.

·       Compliant to the 100GbE XLPPI electrical specification per IEEE 802.3bm

·       Compliant to QSFP28 SFF-8636 Specification

·       Support 40GE/100GE aggregate bit rates

·       Aggregate bandwidth of > 100Gbps

·       Dual wavelength VCSEL bi-directional optical interface, PAM4 2 × 50-Gb/s 850nm/900 nm

·       QSFP28 MSA compliant

·       Capable of over 70m transmission on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF

·       Single +3.3V power supply operating 

·       With digital diagnostic functions 

·       Temperature range 0°C to 70°C

·       RoHS Compliant Part

·       Utilizes a standard LC duplex fiber cable allowing reuse of existing cable infrastructure


Absolute Maximum Ratings

Parameter

Storage Temperature

Symbol

Ts

Min.

-40

Max.

85

Unit

°C

Notes

 

Supply Voltage

VCCT, R

-0.5

4

V


Relative Humidity

RH

0

85

%



Recommended Operating Conditions

Parameter

Operating Case Temperature

Symbol

Tc

Min.

0

Typ.

-

Max.

70

Unit

°C

Notes

 

Supply Voltage

VCCT, R

3.13

3.3

3.47

V


Supply Current

ICC



1000

mA


Power Dissipation

PD



3.5

W



Optical Characteristics (TOP = 0 to 70 °C, VCC = 3.0 to 3.6 Volts)

Parameter

Transmitter

Symbol

 

Min.

 

Typ.

 

Max.

 

Unit

Notes

 

Optical Wavelength CH1

λ

832

850

868

nm


Optical Wavelength CH2

λ

882

900

918

nm


RMS Spectral Width

Pm


0.5

0.65

nm


Average Optical Power per Channel

Laser Off Power Per Channel

Poff



-30

dBm


Optical Extinction Ratio

ER

3.0



dB


Relative Intensity Noise

Rin



-128

dB/HZ

1

Optical Return Loss Tolerance




12

dB


Receiver







Optical Center Wavelength CH1

λ

882

900

918

nm


Optical Center Wavelength CH2

λ

832

850

868

nm


Receiver Sensitivity per Channel

R



-8

dBm


Maximum Input Power

PMAX

+0.5



dBm


Receiver Reflectance

Rrx



-15

dB


LOS De-Assert

LOSD



-10

dBm


LOS Assert

LOSA

-30



dBm


LOS Hysteresis

LOSH

0.5



dB


 Notes:
       1.       12dB Reflection

Electrical Characteristics (TOP = 0 to 70 °C, VCC = 3.13 to 3.47 Volts)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Data Rate per Channel



25.78125


Gbps


Power Consumption


-

2.5

3.5

W


Supply Current

Icc


0.75

1.0

A


Control I/O Voltage-High

VIH

2.0


Vcc

V


Control I/O Voltage-Low

VIL

0


0.7

V


Inter-Channel Skew

TSK



150

Ps


RESETL Duration



10


Us


RESETL De-assert time




100

ms


Power On Time




100

ms


Transmitter

Single Ended Output Voltage Tolerance


0.3


4

V

1

Common mode Voltage Tolerance


15



mV


Transmit Input Diff Voltage

VI

120


1200

mV


Transmit Input Diff Impedance

ZIN

80

100

120



Data Dependent Input Jitter

DDJ



0.1

UI


Data Input Total Jitter

TJ



0.28

UI


Receiver

Single Ended Output Voltage Tolerance


0.3


4

V


Rx Output Diff Voltage

Vo


600

800

mV


Rx Output Rise and Fall Voltage

Tr/Tf

12



ps

1

Total Jitter

TJ



0.7

UI


Deterministic Jitter

DJ



0.42

UI


 
Notes:
       1.       20 to 80%


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