Arista Compatible QSFP-100G-SWDM4-A-FL Quick Spec:

Arista QSFP-100G-SWDM4-A-FL Datasheet (100GBase, SWDM4, QSFP28, MMF, 150m, Dual-LC, COM, EXT, IND) Fiber Optic Transceiver

Part Number: QSFP-100G-SWDM4-A-FL QSFP-100G-SWDM4-A-EXT-FL QSFP-100G-SWDM4-A-IND-FL


Form Factor: QSFP28

TX Wavelength: SWDM4

Reach: 150m

Cable Type: OM4 MMF

Rate Category: 100GBase

Interface Type: SWDM4

DDM: Yes

Connector Type: Dual-LC


Arista Compatible QSFP-100G-SWDM4-A-FL Features:


Arista Compatible QSFP-100G-SWDM4-A-FL Overview

The 100G QSFP28 SWDM4 transceiver modules are designed for use in 100G Ethernet links over duplex multimode fiber. Four channels/lanes in the 850-940nm region @ 25.78Gbps to transport the Ethernet signal. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA.


Specifications:


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

Max

Unit

Power Supply Voltage

Vcc

3.135

3.465

V

Power Consumption

P


3.5

W

Link Distance on OM3 MMF



75

m

Link Distance on OM3 MMF



100

m

Link Distance on OM3 MMF



150

m

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

Min

Typ

Max

Unit

Signaling rate per lane (range)

25.78125 ±100 ppm

GBd

Differential input return loss

Equation (83E–5)



dB

Differential to common mode input return loss

Equation (83E–6)



dB

Differential termination mismatch



10

%

Module stressed input test

See 83E3.4.1




Differential pk-pk input voltage tolerance

900



mV

DC common mode voltage

-350


2850

mV

Single ended voltage tolerance range

-0.4


3.3

V

Electrical Characteristics-Receiver


Parameter

Min

Typ

Max

Unit

Signaling rate per lane (range)

25.78125 ±100 ppm

GBd

Differential Output Impedance

85

100

115

ohm

AC common-mode output voltage (RMS)



17.5

mV

Differential output voltage



900

mV

Eye width

0.57



UI

Eye height, differential

228



mV

Vertical eye closure



5.5

dB

Differential output return loss

Equation (83E–2)



dB

Common to differential mode conversion return loss

Equation (83E–3)



dB

Differential termination mismatch



10

%

Transition time (20% to 80%)

12



ps

DC common mode voltage

-350


2850

mV


Optical Characteristics-Transmitter


Parameter

Lane

Min

Typ

Max

Unit

Notes

Signaling Speed per Lane


25.78125±100ppm

Gbps



Lane Wavelength Range

Lane0 Lane1 Lane2 Lane3

844

874

904

934


858

888

918

948


nm


Modulation Format


NRZ



Difference in launch power between any two lanes




4.5

dBm


RMS Spectral width




0.59

nm

1

Optical Modulation Amplitude (OMA), each lane


-5.5


3

dBm

2

Average Launch Power per Lane @ TX Off State




-30

dBm



Launch Power in OMA minus TDEC

Lane0 Lane1 Lane2 Lane3

-7

-7

-7.4

-7.7




dBm



Transmitter and Dispersion Eye Closure

Lane0 Lane1 Lane2 Lane3



4

4

4.4

4.8


dB


3

Extinction Ratio


2

dB


Optical Return Loss Tolerance




12

dB


Encircled Flux


≥86% at 19 um

≤30% at 4.5 um


4

Transmitter eye mask definition

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

Hit ratio 1.5x10-3 hits per sample



{0.3,0.38,0.45,0.35,0.41,0.5}



Notes:

  1. RMS spectral width is the standard deviation of the spectrum.

  2. The normative lowest value of OMA for a compliant transmitter is ‘Launch power in OMA minus TDEC, each lane (min)’ plus the actual value of ‘TDEC’, but with a value of at least ‘OMA, each lane (min)’.

  3. TDEC is calculated from the measured TDECm using the methods in 3.6. TDECm is measured following the method in IEEE 802.3 clause 95.8.5 using a 12.6 GHz bandwidth reference receiver for all lanes.

If measured into type A1a.2 or type A1a.3 50 um fiber in accordance with IEC 61280-1-4.


Optical Characteristics-Receiver


Parameter

Lane

Min

Typ

Max

Unit

Notes

Signaling Speed per Lane


25.78125±100ppm

Gbps



Lane Wavelength Range

Lane0 Lane1 Lane2 Lane3

844

874

904

934


858

888

918

948


nm


Modulation Format


NRZ



Damage Threshold


4.4



dBm


Avg. Receive Pwr, each lane

Lane0 Lane1 Lane2

Lane3

-9.5

-9.4

-9.4

-9.4



3.4


dBm


Receiver Power, each lane (OMA)




3

dBm


Receiver Reflectance




-12

dB



unStressed Receiver Sensitivity(OMA)

Lane0 Lane1 Lane2 Lane3



-8.2

-8.4

-8.6

-8.8


dBm


1

RX_Los_Assert


-30



dBm


RX_Los_De-ASSERT




-12

dBm


RX_Los_Hysteresis


0.5



dBm



Notes:

  1. unstressed sensitivity at BER of 5E-5 (pre FEC)


Digital Diagnostic Functions

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

Parameter

Unit

Specification

Temperature Monitor

°C

±3

Voltage Monitor

V

±5%

I_bias Monitor

mA

±10%

Received Power (Rx) Monitor

dB

±3.0

Transmit Power (Tx) Monitor

dB

±3.0


PIN Assignment and Function Definitions

The electrical interface to the transceiver is a 38 pins edge connector. The 38 pins provide high speed data, low speed monitoring and control signals, I2C communication, power and ground connectivity. The top and bottom views of the connector are provided below, as well as a table outlining the contact numbering, symbol and full description.


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. GND is the symbol for signal and supply (power) common for QSFP28 modules. All are common within the QSFP28 module and all module voltages are referenced to this potential unless otherwise noted. 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. Recommended host board power supply filtering is shown below. Vcc Rx, Vcc1 and Vcc Tx may be internally connected within the QSFP28 transceiver module in any combination. The connector pins are each rated for a maximum current of 1000mA.


Memory Map

Compatible with SFF-8836


Mechanical Dimensions

Pull tab color: Gray, Pantone 424U Unit: mm


image


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