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100G QSFP28

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SFP Optical Transceivers

FSBQLB31-K10C

QSFP28 100Gb/s LR4 10km DDM

Product Features：
l Supports 103.1Gb/s aggregate bit rate；
l ​4x25Gb/s retimed electrical interface；
l 4X25Gb/s DFB-based LAN-WDM；
l transmitter and PIN/TIA receiver；
l Maximum link length of 10km on；
l Single Mode Fiber (SMF)；
l Hot-pluggable QSFP28 footprint；
l Duplex LC receptacles；
l Single 3.3V power supply；
l Maximum power dissipation < 4.5W；
l RoHS-6 compliant and lead-free；
l I2C management interface；
l Case operating temperature；
Commercial: 0°C to +70°C

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Product OverviewProduct FeaturesSpecifications

Overview


I. Pin Diagram

image 

QSFP28-compliant38-pinconnecto(persFF-867)

 

II. Pin Descriptions

Pin

Symbol

Name/Description

Ref.

1

GND

Ground

1

2

Tx2n

Transmitter Inverted Data Input


3

Tx2p

Transmitter Non-Inverted Data Input


4

GND

Ground

1

5

Tx4n

Transmitter Inverted Data Input


 

 

6

Tx4p

Transmitter Non-Inverted Data Input


7

GND

Ground

1

8

ModSe1L

Module Select


9

ResetL

Module Reset


10

Vcc Rx

+3.3V Power supply receiver


11

SCL

2-wire serial interface clock


12

SDA

2-wire serial interface data


13

GND

Ground

1

14

Rx3p

Receiver Non-Inverted Data Output


15

Rx3n

Receiver Inverted Data Output


16

GND

Ground

1

17

Rx1p

Receiver Non-Inverted Data Output


18

Rx1n

Receiver Inverted Data Output


19

GND

Ground

1

20

GND

Ground

1

21

Rx2n

Receiver Inverted Data Output


22

Rx2p

Receiver Non-Inverted Data Output


23

GND

Ground

1

24

Rx4n

Receiver Inverted Data Output


25

Rx4p

Receiver Non-Inverted Data Output


26

GND

Ground

1

27

ModPrSL

Module Present


28

IntL

Interrupt


29

Vcc Tx

+3.3V Power supply transmitter


30

Vcc1

+3.3V Power Supply


31

LPMode

Low Power Mode


32

GND

Ground

1

33

Tx3p

Transmitter Non-Inverted Data Input


34

Tx3n

Transmitter Inverted Data Input


35

GND

Ground

1

36

Tx1p

Transmitter Non-Inverted Data Input


37

Tx1n

Transmitter Inverted Data Input


38

GND

Ground

1

Note：

1.   Circuit ground is internally isolated from chassis ground.

III. Absolute Maximum Ratings

Parameter

Symbol

Min.

Typ.

Max.

Unit

Ref.

Storage Temperature

TS

-40


85

ºC


Storage Ambient Humidity

HA

5


95

%


Maximum Supply Voltage

VCC

-0.5


4.0

V


Signal Input Voltage


-0.3


Vcc+0.3

V


Receiver Damage Threshold


+5.5



dBm


Lead Soldering Temperature/Time

TSOLD



260/10

ºC/sec

1

Lead Soldering Temperature/Time

TSOLD



360/10

ºC/sec

2

Note:

1.Suitable for wave soldering.

2. Only for soldering by iron.

IV. General Product Characteristics

 

Parameter

Symbol

Min.

Typ.

Max.

Unit

Ref.

Data Rate (per line)

BR


25.78125


Gbps


Case Operating Temperature

Tcase

0

-

70

ºC


Power Supply Voltage

Vcc

3.13

3.3

3.47

V


Transmission Distance

TD


-

10

km


Coupled fiber

Single mode fiber

9/125um SMF

V.  Optical Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Ref.

Transmitter(per lane)

Total Average Output Power

POUT



10.5

dBm


Average Launch Power per lane

TXPx

-4.3


4.5

dBm


Transmit OMA per Lane

TxOMA

-1.3


4.5

dBm


Extinction Ratio

ER

4



dB


 

 

Center Wavelength

 

 

λC


1294.53 ~ 1296.59 1299.02 ~ 1301.09 1303.54 ~ 1305.63

1308.09 ~ 1310.19


 

 

nm


RMS Spectral Width

σ



1

nm


Transmitter OFF Output Power

POff



-30

dBm


 

 

Transmitter eye mask definition {X1,X2,X3,Y1,Y2,Y3}


{0.25,0.4,0.45,0.25,0.28,0.4}


1

Receiver(per lane)

 

 

Input Optical Wavelength

 

 

λIN


1294.53 ~ 1296.59 1299.02 ~ 1301.09 1303.54 ~ 1305.63

1308.09 ~ 1310.19


 

 

nm


Rx Sensitivity(OMA) per lane

RSENS



-8.6

dBm


Input Saturation Power (Overload)

PSAT

+4.5



dBm


Receiver Reflectance

Rfl



-26

dBm


Loss of Signal Assert

PA

-30



dBm


Loss of Signal De-assert

PD



-11

dBm


LOS Hysteresis

PD - PA

0.5



dB


Note:

1. Hit ratio 5x10-5 .

VI. Digital Diagnostic Functions

FSBQLB31-K10C QSFP28 transceivers support the I2C-based diagnostics interface specified by the

QSFP28 MSA.

VII. Electrical Interface Characteristics

Parameter

Symbol

Min.

Type

Max.

Unit

Ref.

Transmitter

Signaling rate (each lane)

SR


25.78125


Gbps


Differential data input voltage per lane

Vin,pp, diff

 

-

 

-

900

mV


Differential termination mismatch

-

-

-

10

%


Single-ended voltage tolerance range

-

-0.4

-

3.3

V


DC common mode voltage

-

-350

-

2850

mV


Receiver

 

 

Signaling rate (each lane)

SR


25.78125


Gbps


Differential output voltage

-

-

-

900

mV


Eye width

-

0.57

-

-

UI


Eye height

-

228

-

-

mV


Differential termination mismatch

-


-

10

%


Transition time (min, 20% to 80%) @LR4

 

-

12

 

-

 

-

ps


Transition time (min, 20% to 80%) @OTU4

 

-

9.5

 

-

 

-

ps


 

VIII.Mechanical Specifications (Unit: mm)

compatible with SFF-8661.

image 

feature


Product Features

l Supports 103.1Gb/s aggregate bit rate

l 4x25Gb/s retimed electrical interface

l 4X25Gb/s DFB-based LAN-WDM

l transmitter and PIN/TIA receiver

l Maximum link length of 10km on

l Single Mode Fiber (SMF)

l Hot-pluggable QSFP28 footprint

l Duplex LC receptacles

l Single 3.3V power supply

l Maximum power dissipation < 4.5W

l RoHS-6 compliant and lead-free

l I2C management interface

l Case operating temperature

           Commercial: 0°C to +70°C

 

 

Applications

Compliance

100GBASE-LR4 100G Ethernet

QSFP28 MSA.


IEEE802.3bm and IEEE802.3ba


SFF-8636


RoHS

Specifications


Ordering Information

Part No.

Bit Rate

(Gbps)

Laser

(nm)

Distance

Fiber Type

DDMI

Connector

Temp

FSBQLB31-K10C

4*25.78125

LWDM

10km

SMF

YES

LC

0℃~+70℃