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100G QSFP28 SWDM4 光模块

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  • 更新时间2024/4/27 10:19:14
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工业级交换机,POE交换机,网管收发器,光模块
四通道 100G QSFP28 SWDM4 光模块
100G QSFP28 SWDM4 光模块 产品信息
产品介绍

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.

Applications

ü 100G Ethernet over Duplex MM

Feature

ü Compliant with QSFP28 MSA

ü Compliant with SWDM MSA

ü Compliant with IEEE802.3bm CAUI-4

ü Hot-pluggable QSFP28 form factor

ü 4x25Gb/s 850mm VCSEL-based transmitter

ü Supports 103.1Gbps aggregate bit rate

ü Power dissipation<3.5W

ü Maximum link length of 150m on OM5 multimode Fiber

ü Case temperature range of 0°C to 70°C

ü Duplex LC receptacles

ü CAUI-4 electrical interface

ü RoHS compliant

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Units

Storage Temp Range

Ts

-40

+85

Supply Voltage

Vcc

-0.5

3.6

V

Relative Humidity

RH

15%

85%


 

Operating Conditions

Parameter

Symbol

Min

Max

Units

Case Temp-Operating

Tcase

0

70

Supply Voltage

Vcc

3.14

3.46

V

Power Consumption

P


3.5

W

Link Distance on OM3 Fiber



75

M

Link Distance on OM4 Fiber



100

M

Link Distance on OM5 Fiber



150

M

 

Optical Characteristics

Transmitter Parameter

Lane

Min

 Typical

Max 

Unit

Note

Signaling rate, each lane


25.78125±100ppm

Gb/s


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

 

Receiver Parameter

Lane

Min

 Typical

Max 

Unit

Note

Signaling rate, each lane


25.78125±100ppm

Gb/s


Lane Wavelength Range

Lane0

844


858

nm


Lane1

874


888


Lane2

904


918


Lane3

934


948


Modulation Format


NRZ



Damage Threshold


4.4



dBm


Average Receive Power, each lane

Lane0

-9.5


3.4

dBm


Lane1

-9.4



Lane2

-9.4



Lane3

-9.4



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


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

 

Digital Diagnostic Monitoring Specifications

Parameters

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

 

Electrical Characteristics

Transmitter electrical input signal characteristics(TP1)

Min

Typical

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

Receiver electrical output signal characteristics(TP4)

Min

Typical

Max

Unit

Signaling rate per lane (range)

25.78125 ± 100 ppm

GBd

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

 

QSFP28 Connector and Pinout Description

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.



Figure 1. QSFP28-compliant 38-pin connector

Pin

Symbol

Name/Description

NOTE

1

GND

Transmitter Ground  (Common with Receiver Ground)

1

2

Tx2n

Transmitter Inverted Data Input


3

Tx2p

Transmitter Non-Inverted Data output


4

GND

Transmitter Ground  (Common with Receiver Ground)

1

5

Tx4n

Transmitter Inverted Data Input


6

Tx4p

Transmitter Non-Inverted Data output


7

GND

Transmitter Ground  (Common with Receiver Ground)

1

8

ModSelL

Module Select


9

ResetL

Module Reset


10

VccRx

3.3V Power Supply Receiver

2

11

SCL

2-Wire serial Interface Clock


12

SDA

2-Wire serial Interface Data


13

GND

Transmitter Ground  (Common with Receiver Ground)


14

Rx3p

Receiver Non-Inverted Data Output 


15

Rx3n

Receiver Inverted Data Output


16

GND

Transmitter Ground  (Common with Receiver Ground)

1

17

Rx1p

Receiver Non-Inverted Data Output


18

Rx1n

Receiver Inverted Data Output


19

GND

Transmitter Ground  (Common with Receiver Ground)

1

20

GND

Transmitter Ground  (Common with Receiver Ground)

1

21

Rx2n

Receiver Inverted Data Output


22

Rx2p

Receiver Non-Inverted Data Output


23

GND

Transmitter Ground  (Common with Receiver Ground)

1

24

Rx4n

Receiver Inverted Data Output


25

Rx4p

Receiver Non-Inverted Data Output


26

GND

Transmitter Ground  (Common with Receiver Ground)

1

27

ModPrsl

Module Present


28

IntL

Interrupt


29

VccTx

3.3V power supply transmitter

2

30

Vcc1

3.3V power supply

2

31

LPMode

Low Power Modenot connect


32

GND

Transmitter Ground  (Common with Receiver Ground)

1

33

Tx3p

Transmitter Non-Inverted Data Input


34

Tx3n

Transmitter Inverted Data Output


35

GND

Transmitter Ground  (Common with Receiver Ground)

1

36

Tx1p

Transmitter Non-Inverted Data Input


37

Tx1n

Transmitter Inverted Data Output


38

GND

Transmitter Ground  (Common with Receiver 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-8636

Mechanical Dimensions

Unit:  mm

Pull tab color:  Gray ,Pantone 424U



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