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Quick Spec:

Part Number: QSFP28-100GBase-LX4 QSFP28-100GBase-LX4-EXT QSFP28-100GBase-LX4-IND


Form Factor: QSFP28

TX Wavelength: LX4

Reach: 2km

Cable Type: SMF/MMF

Rate Category: 100GBase

Interface Type: LX4

DDM: Yes

Connector Type: Dual-LC


Features:


Overview

The QSFP28-100GBASE-LX4 is designed for use in 100 Gigabit Ethernet links over single-mode fiber and multi-mode fiber. They are compliant with the QSFP28 MSA and IEEE 802.3ba 100GBASE-LX4.Module-level digital diagnostic functions are available via an I2C interface, as specified by the QSFP28 MSA. The optical transceiver is compliant per the RoHS Directive 2011/6

Specification:

Absolute Maximum Ratings

The operation in excess of any absolute maximum ratings might cause permanent damage to this module.


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

95

%

Signal Input Voltage


-0.3

Vcc+0.3

V

Receiver Damage Threshold


+3.4


dBm


Electrical Characteristics

The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified


Parameter

Symbol

Min

Typ

Max

Unit

Notes

Supply Voltage

Vcc

3.15


3.45

V


Supply Current

ICC



1000

mA


Input different impedance

Rin

90

100

110

Ω

2

Single ended data input swing

Vin, pp

120


820

mV


Transmitter Disable Voltage

VDIS

2


VCC

V

3

Transmitter Enable Voltage

VEN

0


0.8

V


Output different impedance

Rout

90

100

110

Ω

2

Single ended data output swing

Vout, pp

340


850

mV

4

LOS Asserted

VLOSA

2


VCCHOST

V

5

LOS De-asserted

VLOSD

0


0.8

V

5

Power Supply Rejection

PSR

50



mVpp


Notes:

1.Maximum total power value is specified across the full temperature and voltage range. 2.Connected directly to TX data input pins. AC coupled thereafter.

  1. Or open circuit.

  2. Into 100Ωdifferential termination.

  3. LossOf Signal is LVTTL. Logic “0” indicates normal operation; logic “1” indicates no signal detected.


Optical Characteristics


Parameter

Symbol

Min

Typ

Max

Unit


Lane Wavelength

L0

1264.5

1270

1277.5


nm

L1

1284.5

1290

1297.5

L2

1304.5

1310

1317.5

L3

1324.5

1330

1337.5

Optical Characteristics-Transmitter


Parameter

Symbol

Min

Typ

Max

Unit

Notes

Total Average Launch Power for SMF

POUT



8.3

dBm


Total Average Launch Power for MMF




9.5

dBm


Average Output Power per lane for SMF

Pave

-7.0


2.3

dBm


Average Output Power per lane for MMF


-5.0


3.5

dBm


Transmit OMA per Lane for SMF

TxOMA

-6.0


3.5

dBm


Transmit OMA per Lane for MMF


-4.0


4.5

dBm


Extinction Ratio

ER

3.5



dB


Sidemode Suppression ratio

SMSR

30

dB


Transmitter and Dispersion Penalty

TDP



2.6

dB


Transmitter OFF Output Power

POff



-30

dBm


Transmitter eye mask definition

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


{0.31, 0.40, 0.45, 0.34, 0.38, 0.4}




Optical Characteristics-Receiver


Parameter

Symbol

Min

Typ

Max

Unit

Notes

Rx Sensitivity (OMA) per lane for SMF

RSENS1



-8.6

dBm


Rx Sensitivity (OMA) per lane for MMF




-8.6

dBm


Input Saturation Power (Overload) for SMF

PSAT



+2.3

dBm


Input Saturation Power (Overload) for MMF




+3.5



Receiver Reflectance

Rfl



-26

dBm


Loss of Signal Assert

PA

-30



dBm


Loss of Signal De-assert

PD



-12.5

dBm


LOS Hysteresis

PD - PA

0.5


6

dB


Block Diagram of Transceiver


Snap2.jpg


Digital Diagnostic Functions

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


Parameter

Symbol

Min

Max

Unit

Notes

Temperature monitor absolute error

DMI_Temp

-5

5


Supply voltage monitor absolute error

DMI_VCC

-0.1

0.1

V


Channel RX power monitor absolute error

DMI_RX_Ch

-3

3

dB


Channel Bias current monitor

DMI_Ibias_Ch

-10%

10%

mA


Channel TX power monitor absolut error

DMI_TX_Ch

-3

3

dB



Mechanical Dimensions

Units: nm


图示, 工程绘图

描述已自动生成

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.


ESD

This transceiver is specified as ESD threshold 1kV for SFI pins and 2kV for all other electrical input pins, tested per MIL- STD-883, Method 3015.4 /JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected environment.


Laser Safety

This is a Class 1 Laser Product according to IEC 60825-1:2007. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (June 24, 2007).


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