Quick Spec:

A close-up of a blue and silver device  Description automatically generated with low confidence

Part Number: QSFP28-100GBase-LR-2L QSFP28-100GBase-LR-2L -EXT QSFP28-100GBase-LR-2L -IND

Form Factor: QSFP28

TX Wavelength: 1310nm

Reach: 2km

Cable Type: SMF

Rate Category: 100GBase

Interface Type: LR4-2L

DDM: Yes

Connector Type: Dual-LC Optical Power Budget: 1.6 dB

TX Power Min/Max: -6.5 to +2.5 dBm RX Power Min/Max: -8.1 to +2.5 dBm


Features:


Overview

The QSFP28-100GBASE-LR4-2L is a 103 Gbps transceiver module designed for optical communication applications compliant to 100GBASE-LR4-2L of the IEEE P802.3ba standard. The module converts 4 input channels of 25 Gbps electrical data to 4 channels of LAN WDM optical signals and then multiplexes them into a single channel for 103 Gbps optical transmission. Reversely on the receiver side, the module de-multiplexes a 103 Gbps optical input into 4 channels of LAN WDM optical signals and then converts them to 4 output channels of electrical data. The central wavelengths of the 4 LAN WDM channels are 1295.56, 1300.05, 1304.58 and 1309.14 nm as members of the LAN WDM wavelength grid defined in IEEE 802.3ba. The high-performance cooled LAN WDM DFB transmitters and high sensitivity PIN receivers provide superior performance for 100G applications up to 2km links and compliant to optical interface with IEEE802.3ba Clause 88 100GBASE-LR4. The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA).


Specification:

Absolute Maximum Ratings


Parameter

Symbol

Min

Max

Unit

Storage Temperature

Ts

-40

+85

°C

Operating Case Temp (Standard)

TOP

0

70

°C

Operating Case Temp (Industrial)

TOP

-40

85

°C

Power Supply Voltage

Vcc

-0.5

3.6

V

Relative Humidity (non- condensation)

RH

5

85

%


Recommended Operating Conditions


Parameter

Symbol

Min

Typ

Max

Unit

Power Supply Voltage

Vcc

3.135

3.3

3.465

V

Data Rate, each Lane



25.78125


Gb/s

Control Input Voltage High)


2


Vcc

V

Control Input Voltage Low


0


0.8

V

Link Distance (SM fiber)

D



2

km

Recommended Power Supply Filter


image


Electrical Characteristics


Parameter

Symbol

Min

Typ

Max

Unit

Power Consumption


-


4.5

W

Supply Current

Icc



1.21

A

Electrical Characteristics-Transmitter (each lane)


Parameter

Symbol

Min

Typ

Max

Unit

Differential Input Voltage Swing

Vin.pp

150


1200

mVpp

Differential Input Impedance

Zin

85

100

115

Electrical Characteristics-Receiver


Parameter

Symbol

Min

Typ

Max

Unit

Differential Output Voltage Swing

Vout.pp

200


1100

mVpp

Differential Output Impedance

Zout

85

100

115

ohm

Optical Characteristics


Parameter

Symbol

Min

Typ

Max

Unit


Lane Wavelength

L0

1294.53

1295.56

1296.59


nm

L1

1299.02

1300.05

1301.09

L2

1303.54

1304.58

1305.63

L3

1308.09

1309.1

1310.19


Optical Characteristics-Transmitter


Parameter

Symbol

Min

Typ

Max

Unit

Notes

Signaling Speed per Lane

BR


25.78


Gbps


Side-mode Suppression Ratio

SMSR

30



dB


Total Average Launch Power

PT



10.5

dBm


Average Launch Power (each Lane)


PAVG

-4.3


4.5

dBm


Optical Modulation Amplitude (each Lane)

POMA

-1.3


4.5

dBm

1

Extinction Ratio

ER

4



dB


Optical Return Loss Tolerance

TOL



20

dB


Eye Mask {X1, X2, X3, Y1, Y2, Y3}


IEEE 802.3 Clause 88 100GBase-LR4



Average Launch Power OFF (each Lane)

Poff



-30

dBm


Optical Characteristics-Receiver


Parameter

Symbol

Min

Typ

Max

Unit

Notes

Signaling Speed per Lane

BR


25.78


Gbps


Total Average Receive Power




10.5

dBm


Average Power at Receiver, each Lane


-10.6


4.5

dBm


Receive Power (OMA) (each Lane)




4.5

dBm


Receiver Sensitivity (OMA), each Lane

SEN



-8.6

dBm


LOS Assert

LOSA


-26


dBm


LOS Deassert

LOSD


-11.6


dBm


LOS Hysteresis

LOSH

0.5



dB


Optical Return Loss

ORL

-25



dB



Digital Diagnostic Functions

The following digital diagnostic characteristics are defined over the normal operating conditions unless otherwise specified.

Parameter

Symbol

Min

Typ

Max

Unit

Notes

Temperature monitor absolute error

DMITEMP

-3


3

deg. C

Over operating temperature range

Supply voltage monitor absolute error

DMIVCC

-0.1


0.1

V

Over Full operating range

Channel RX power monitor absolute error

DMIRX_CH

-2


2

dB

1

Channel Bias current monitor

DMIIbias_CH

-10%


10%

mA


Channel TX power monitor absolute error

DMITX_CH

-2


2

dB

1


PIN Assignment and Function Definitions


image


PIN Definition


PIN

Signal Name

Description

1

GND

Ground (1)

2

Tx2n

CML-I Transmitter 2 Inverted Data Input

3

Tx2p

CML-I Transmitter 2 Non-Inverted Data Input

4

GND

Ground (1)

5

Tx4n

CML-I Transmitter 4 Inverted Data Input

6

Tx4p

CML-I Transmitter 4 Non-Inverted Data Input

7

GND

Ground (1)

8

ModSelL

LVTLL-I Module Select

9

ResetL

LVTLL-I Module Reset

10

VCCRx

+3.3V Power Supply Receiver (2)

11

SCL

LVCMOS-I/O 2-Wire Serial Interface Clock

12

SDA

LVCMOS-I/O 2-Wire Serial Interface Data

13

GND

Ground (1)

14

Rx3p

CML-O Receiver 3 Non-Inverted Data Output

15

Rx3n

CML-O Receiver 3 Inverted Data Output

16

GND

Ground (1)

17

Rx1p

CML-O Receiver 1 Non-Inverted Data Output

18

Rx1n

CML-O Receiver 1 Inverted Data Output

19

GND

Ground (1)

20

GND

Ground (1)

21

Rx2n

CML-O Receiver 2 Inverted Data Output

22

Rx2p

CML-O Receiver 2 Non-Inverted Data Output

23

GND

Ground (1)

24

Rx4n

CML-O Receiver 4 Inverted Data Output

25

Rx4p

CML-O Receiver 4 Non-Inverted Data Output

26

GND

Ground (1)

27

ModPrsL

Module Present

28

IntL

Interrupt

29

VCCTx

+3.3V Power Supply Transmitter (2)

30

VCC1

+3.3V Power Supply

31

LPMode

LVTLL-I Low Power Mode

32

GND

Ground (1)

33

Tx3p

CML-I Transmitter 3 Non-Inverted Data Input

34

Tx3n

CML-I Transmitter 3 Inverted Data Input

35

GND

Ground (1)

36

Tx1p

CML-I Transmitter 1 Non-Inverted Data Input

37

Tx1n

CML-I Transmitter 1 Inverted Data Input

38

GND

Ground (1)

Notes:

  1. All Ground (GND) are common within the QSFP+ module and all module voltages are referenced to this potential


    unless noted otherwise. Connect these directly to the host board signal common ground plane.

  2. VccRx, Vcc1 and VccTx are the receiving and transmission power suppliers and shall be applied concurrently. The connector pins are each rated for a maximum current of 500mA.


Licensing

The following U.S. patents are licensed by Finisar to FluxLight, Inc.:

U.S. Patent Nos: 7,184,668, 7,079,775, 6,957,021, 7,058,310, 6,952,531, 7,162,160, 7,050,720