• 100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel
100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel

100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel

Product Details:

Place of Origin: Guangdong, SHENZHEN
Brand Name: TAKFLY
Certification: CE,ROHS,REACH,ISO9001,ISO14001
Model Number: TKQS28-100G-ER4

Payment & Shipping Terms:

Minimum Order Quantity: 1 Pices
Price: US$0.01 ~ US$1200/PC
Delivery Time: 3-7working days
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
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Detail Information

Ratio: 50/50 Center Wavelength: 1450nm
Insertion Loss: ≤0.3dB Package Weight: 10g
Package Type: Bare Fiber, 900um Loose Tube, 2mm Cable Wavelegth: 1310nm
Axis Alignment: Slow Axis Or Fast Axis Wavelength Range: 1310nm, 1550nm
Application: Optical Communication Systems Splitter Ratio: 98/2
Storage Temperature: -40~+85℃ Port Number: 1x2
Fiber Length: 1m Fiber: PM Corning 980nm Fiber
Power Handling Capacity: High Power
Highlight:

100Gbps QSFP28 ER4 Lite

,

100Gbps QSFP28 ER4 Lite Optical Transceiver

Product Description

Description
  • TKQS28-100G-ER4 is a 100Gb/s transceiver module designed for optical communication applications compliant to Ethernet 100GBASE-ER4 Lite standard. The module converts 4 input channels of 25Gb/s electrical data to 4 channels of LANWDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission. Reversely on the receiver side, the module de-multiplexes a 100Gb/s optical input into 4 channels of LANWDM 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 1309.14nm as members of the LANWDM wavelength grid defined in IEEE802.3ba.The high performance cooled LAN WDM EA-DFB transmitters and high sensitivity APD receivers provide superior performance for 100Gigabit Ethernet applications up to 30km links without FEC and 40km links with FEC.
  • The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA).It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.

Functional Description

  1. The transceiver module receives 4 channels of 25Gb/s electrical data, which are processed by a 4-channel Clock and Data Recovery (CDR) IC that reshapes and reduces the jitter of each electrical signal. Subsequently, EML laser driver IC converts each one of the 4 channels of electrical signals to an optical signal that is transmitted from one of the 4 cooled EML lasers which are packaged in the Transmitter Optical Sub-Assembly (TOSA). Each laser launches the optical signal in specific wavelength specified in IEEE802.3ba 100G BASE-ER4 requirements. These 4-lane optical signals will be optically multiplexed into a single fiber by a 4-to-1 optical WDMMUX. The optical output power of each channel is maintained constant by an automatic power control (APC) circuit. The transmitter output can be turned off by TX_DIS hardware signal and/or 2-wire serial interface.
  • The receiver receives 4-lane LANWDM optical signals. The optical signals are de-multiplexed by a 1-to-4 optical DEMUX and each of the resulting 4 channels of optical signals is fed into one of the 4 receivers that are packaged into the Receiver Optical Sub-Assembly (ROSA). Each receiver converts the optical signal to an electrical signal. The regenerated electrical signals are retimed and de-jittered and amplified by the RX portion of the 4-channel CDR. The retimed 4-lane output electrical signals are compliant with CEI-28G-VSR interface requirements. In addition, each received optical signal is monitored by the DOM section. The monitored value is reported through the 2-wire serial interface. If one or more received optical signal is weaker than the threshold level, RX_LOS hardware alarm will be triggered.
  • A single +3.3V power supply is required to power up this product. Both power supply pins VccTx and VccRx are internally connected and should be applied concurrently. As per MSA specifications the module offers 7 low speed hardware control pins (includingthe2-wireserialinterface): ModSelL, SCL, SDA, ResetL, LPMode, ModPrsL and IntL.
  • Module Select (ModSelL) is an input pin. When held low by the host, this product responds to 2-wire serial communication commands. The ModSelL allows the use of this product on a single2-wireinterface bus – individual ModSelL lines must be used.
  • Serial Clock (SCL) and Serial Data (SDA) are required for the 2-wire serial bus communication interface and enable the host to access the QSFP28 memory map.
  • The ResetL pin enables a complete reset, returning the settings to their default state, when a low level on the ResetL pin is held for longer than the minimum pulse length. During the execution of a reset the host shall disregard all status bits until it indicates a completion of the reset interrupt. The product indicates this by posting an IntL (Interrupt) signal with the Data_Not_Ready bit negated in the memory map. Note that on power up (including hot insertion) the module should post this completion of reset interrupt without requiring a reset.
  • Low Power Mode (LPMode) pin is used to set the maximum power consumption for the product in order to protect hosts that are not capable of cooling higher power modules, should such modules be accidentally inserted
  • Module Present (ModPrsL) is a signal local to the host board which, in the absence of a product, is normally pulled up to the host Vcc. When the product is inserted into the connector, it completes the path to ground through a resistor on the host board and asserts the signal. ModPrsL then indicates its present by setting ModPrsL to a “Low” state.
  • Interrupt (IntL) is an output pin. “Low” indicates a possible operational fault or a status critical to the host system. The host identifies the source of the interrupt using the 2-wire serial interface. The IntL pin is an open collector output and must be pulled to the Host Vcc voltage on the Host board.


Features 

Ø Hot pluggable QSFP28 MSA form factor

Ø Compliant to Ethernet 100GBASE-ER4 Lite

Ø Supports 103.1Gb/s aggregate bit rate

Ø Up to 30km reach for G.652 SMF without FEC

Ø Up to 40km reach for G.652 SMF with FEC

Ø Single +3.3V power supply

Ø Operating case temperature: 0~70oC

Ø Transmitter: cooled 4x25Gb/s LAN WDM EML TOSA (1295.56, 1300.05, 1304.58, 1309.14nm)

Ø Receiver: 4x25Gb/s APD ROSA

Ø 4x25G electrical interface (OIF CEI-28G-VSR)

Ø Maximum power consumption 4.5W

Ø Duplex LC receptacle

Ø RoHS-6 compliant


Applications

Ø 100GBASE-LR4 Ethernet Links

Ø Infiniband QDR and DDR interconnects

Ø Client-side 100G Telecom connections


Transceiver Block Diagram

100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel 0

Figure 1.  Transceiver Block Diagram



Pin Assignment and Description

100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel 1

Figure 2.  MSA compliant Connector

Pin Definition

PIN

Logic

Symbol

Name/Description

Note s


1

 

GND

Ground

1


2

CML-I

Tx2n

Transmitter Inverted Data Input

 


3

CML-I

Tx2p

Transmitter Non-Inverted Data output

 


4

 

GND

Ground

1


5

CML-I

Tx4n

Transmitter Inverted Data Input

 


6

CML-I

Tx4p

Transmitter Non-Inverted Data output

 


7

 

GND

Ground

1


8

LVTLL-I

ModSelL

Module Select

 


9

LVTLL-I

ResetL

Module Reset

 


10

 

VccRx

+3.3V Power Supply Receiver

2


11

LVCMOS-I/O

SCL

2-Wire Serial Interface Clock

 


12

LVCMOS-I/O

SDA

2-Wire Serial Interface Data

 


13

 

GND

Ground

 


14

CML-O

Rx3p

Receiver Non-Inverted Data Output

 


15

CML-O

Rx3n

Receiver Inverted Data Output

 


16

 

GND

Ground

1


17

CML-O

Rx1p

Receiver Non-Inverted Data Output

 


18

CML-O

Rx1n

Receiver Inverted Data Output

 


19

 

GND

Ground

1


20

 

GND

Ground

1


21

CML-O

Rx2n

Receiver Inverted Data Output

 


22

CML-O

Rx2p

Receiver Non-Inverted Data Output

 


23

 

GND

Ground

1


24

CML-O

Rx4n

Receiver Inverted Data Output

1


25

CML-O

Rx4p

Receiver Non-Inverted Data Output

 


26

 

GND

Ground

1


27

LVTTL-O

ModPrsL

Module Present

 


28

LVTTL-O

IntL

Interrupt

 


29

 

VccTx

+3.3 V Power Supply transmitter

2


30

 

Vcc1

+3.3 V Power Supply

2


31

LVTTL-I

LPMode

Low Power Mode

 


32

 

GND

Ground

1


33

CML-I

Tx3p

Transmitter Non-Inverted Data Input

 


34

CML-I

Tx3n

Transmitter Inverted Data Output

 


35

 

GND

Ground

1


36

CML-I

Tx1p

Transmitter Non-Inverted Data Input

 


37

CML-I

Tx1n

Transmitter Inverted Data Output

 

 

38

 

GND

Ground

1

 Notes:

1. GND is the symbol for signal and supply (power) common for the QSFP28 module. All are common within the 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 in Figure3 below. VccRx, Vcc1 and VccTx may be internally connected within the module in any combination. The connector pins are each rated for a maximum current of 1000mA.


Recommended Power Supply Filter

100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel 2

Figure 3. Recommended Power Supply Filter


Absolute Maximum Ratings

It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module.

Parameter

Symbol

Min

Max

Units

Notes

Storage Temperature

TS

-40

85

degC

 

Operating Case Temperature

TOP

0

70

degC

 

Power Supply Voltage

VCC

-0.5

3.6

V

 

Relative Humidity (non-condensation)

RH

0

85

%

 

Damage Threshold, each Lane

THd

-3.0

 

dBm



Recommended Operating Conditions and Power Supply Requirements

Parameter

Symbol

Min

Typical

Max

Units

Notes

Operating Case Temperature

TOP

0

 

70

degC

 

Power Supply Voltage

VCC

3.135

3.3

3.465

V

 

Data Rate, each Lane

 

 

25.78125

 

Gb/s

 

Data Rate Accuracy

 

-100

 

100

ppm

 

Control Input Voltage High

 

2

 

Vcc

V

 

Control Input Voltage Low

 

0

 

0.8

V

 

Link Distance with G.652 (without FEC)

D1

 

 

30

km

1

Link Distance with G.652 (with FEC)

D2

 

 

40

km

1

Notes:

1.Depending on actual fiber loss/km (link distance specified is for fiber insertion loss of0.4dB/km)

 

Electrical Characteristics

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

Parameter

Test Poin

Min

Typical

Max

Units

Notes

Power Consumption

 

 

 

4.5

W

 

Supply Current

Icc

 

 

1.36

A

 

Transmitter(each Lane)

Overload Differential Voltage pk-pk

TP1a

900

 

 

mV

 

Common Mode Voltage (Vcm)

TP1

-350

 

2850

mV

1

Differential Termination

TP1

 

 

10

%

At1MHz

Differential Return Loss (SDD11)

TP1

 

 

SeeCEI-28G-VSR

dB

 

Common Mode to Differential conversion and Differential to Common

TP1

 

 

SeeCEI-28G-VSR

dB

 

Stressed Input Test

TP1a

SeeCEI-28G-VSR

 

 

 

 

Receiver (each Lane)

Differential Voltage, pk-pk

TP4

 

 

900

mV

 

Common Mode Voltage (Vcm)

TP4

-350

 

2850

mV

1

Common Mode Noise, RMS

TP4

 

 

17.5

mV

 

Differential Termination

TP4

 

 

10

%

At1MHz

Differential Return Loss (SDD22)

TP4

 

 

SeeCEI-28G-VSR

dB

 

Common Mode to Differential conversion and Differential to Common Mode

TP4

 

 

SeeCEI-28G-VSR

dB

 

Common Mode Return Loss (SCC22)

TP4

 

 

-2

dB

2

Transition Time, 20 to 80%

TP4

9.5

 

 

ps

 

Vertical Eye Closure (VEC)

TP4

 

 

5.5

dB

 

Eye Width

at 10-15probability(EW15)

TP4

0.57

 

 

UI

 

Eye Height

at 10-15probability(EH15)

TP4

228

 

 

mV

 

Notes:

1.Vcm is generated by the host. Specification includes effects of ground offset voltage.

2.From 250MHz to30GHz.

 

Optical Characteristics

Ethernet 100GBASE-ER4Lite


Parameter

Symbol

Min

Typical

Max

Units

Notes


 

Lane Wavelength

L0

1294.53

1295.56

1296.59

nm

 


L1

1299.02

1300.05

1301.09

nm

 


L2

1303.54

1304.58

1305.63

nm

 


L3

1308.09

1309.14

1310.19

nm

 


Transmitter


SMSR

SMSR

30

 

 

dB

 


Total Average Launch Power

PT

 

 

10.5

dBm

 


Average Launch Power, each Lane

PAVG

 

-2.9

 

4.5

dBm

 

1


OMA, each Lane

POMA

0.1

 

4.5

dBm

2


Difference in Launch Power between any Two Lanes(OMA)

Ptx, diff

 

 

3.6

dB

 


Launch Power in OMA minus Transmitter and Dispersion Penalty(TDP), each Lane

 

-0.65

 

 

dBm

 


TDP, each Lane

TDP

 

 

2.5

dB

 


Extinction Ratio

ER

7

 

 

dB

 


RIN20OMA

RIN

 

 

-130

dB/Hz

 


Optical Return Loss Tolerance

TOL

 

 

20

dB

 


Transmitter Reflectance

RT

 

 

-12

dB

 


Average Launch Power OFF Transmitter, each Lane

 

Poff

 

 

 

-30

 

dBm

 


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

 

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

 

 


Receiver


Damage Threshold, each Lane

THd

-3.0

 

 

dBm

3


Average Receive Power, each Lane

 

-16.9

 

-4.9

dBm

for 30km

 

 

 

 

 

 

 

Link Distanc

 

Average Receive Power, each Lane

 

-20.9

 

-4.9

dBm

for 40kmLinkDistance

Receive Power (OMA), each Lane

 

 

 

-1.9

dBm

 

Receiver Sensitivity (OMA),each

Lane

 

SEN1

 

 

-14.65

 

dBm

For BER

=1x10-12

Stressed Receiver Sensitivity(OMA), each Lane

 

 

 

-12.65

 

dBm

For BER

=1x10-12

Receiver Sensitivity (OMA),each Lane

 

SEN2

 

 

-18.65

 

dBm

For BER

=5x10-5

Stressed Receiver Sensitivity(OMA), each Lane

 

 

 

-16.65

dBm

For BER

=5x10-5

Receiver reflectance

 

 

 

-26

dB

 

Difference in Receive Power between any Two Lanes(Average and OMA)

Prx, diff

 

 

3.6

dB

 

LOS Assert

LOSA

 

-26

 

dBm

 

LOS Deassert

LOSD

 

-24

 

dBm

 

LOS Hysteresis

LOSH

0.5

 

 

dB

 

Receiver Electrical 3 dB upper Cutoff  Frequency, each Lane

 

Fc

 

 

 

31

 

GHz

 

Conditions of Stress Receiver Sensitivity Test (Note4)

Vertical Eye Closure Penalty, each Lane

 

 

1.5

 

dB

 

Stressed Eye J2 Jitter, each Lane

 

 

0.3

 

UI

 

Stressed Eye J9 Jitter, each Lane

 

 

0.47

 

UI

 

Notes:

1.The minimum average launch power spec is based on ER not exceeding 9.5dB and transmitter OMA higher than0.1dBm.

2.Even if the TDP < 0.75 dB, the OMA min must exceed the minimum value specified here.

3.having this power level on one lane. The receiver does not have to operate correctly at this input power.

4.The receiver shall be able to tolerate, without damage, continuous exposure to a modulated optical input signal Vertical eye closure penalty, stressed eye J2 jitter, and stressed eye J9 jitter are test conditions for measuring stressed receiver sensitivity. They are not characteristics of the receiver.

 

Digital Diagnostic Functions

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

specified.

Parameter

Symbol

Min

Max

Units

Notes

Temperature monitor absolute error

DMI_Temp

-3

+3

degC

Over operating temperature range

Supply voltage monitor absolute error

DMI_VCC

-0.1

0.1

V

Over full operating range

Channel RX power monitor absolute error

DMI_RX_Ch

-2

2

dB

1

Channel Bias current monitor

DMI_Ibias_Ch

-10

10

mA

 

Channel TX power monitor absolute error

DMI_TX_Ch

-2

2

dB

1

Notes:

Due to measurement accuracy of different single mode fibers, there could be an additional +/-1dB fluctuation, or a +/- 3 dB total accuracy.



Mechanical Dimensions

100Gbps QSFP28 ER4 Lite Optical Transceiver Up to 27.952 Gbps Data rate per channel 3

Figure 4. Mechanical Outline


ESD

Thistransceiver 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 Class1 Laser Product according to EN60825-1:2014. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (June 24,2007).

Caution: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

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