Sign in

Sign in
Reset PasswordCreate an Account

Create an Account

Create an Account
Sign in

100G QSFP28 CWDM4 1310 nm 2 km

Ascent’s QSFP28-100G-LP02 transceiver modules are designed for use in 100 Gigabit Ethernet links over single mode fiber. They are compliant with the QSFP28 MSA, CWDM4 MSA, IEEE 802.3ba and IEEE 802.3bm. They are suitable to be used in various applications, such as data centers, high-performance computing networks, enterprise core and distribution layer applications. The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. This product converts the 4- channel 25Gb/s electrical input data into CWDM optical signals (light), by a 4-wavelength Distributed Feedback Laser (DFB) TO. The 4 wavelengths are multiplexed into a single 100Gb/s data, propagating out of the transmitter module via the SMF. The receiver module accepts the 100Gb/s optical signals input, and de-multiplexes it into 4 CWDM 25Gb/s channels. Each wavelength light is collected by a discrete photo diode, and then outputted as electric data after amplified by a TIA. The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP28 Multi-Source Agreement (MSA). The optical transceiver is compliant per the RoHS Directive 2011/65/EU.

•    Supports 103.1Gb/s aggregate bit rate

•    4x25Gb/s electrical interface

•    4X25Gb/s CWDM transmitter and PIN/TIA receiver

•    Maximum link length of 2km on Single Mode Fiber (SMF)

•    Hot-pluggable QSFP28 from factor

•    Single 3.3V power supply

•    Integrated 4-channel CWDM mux/Demux for duplex LC operation

•    Duplex LC receptacles

•    Maximum power dissipation<3.5W

•    RoHS-6 compliant and lead-free

•    I2C management interface

•    Commercial operating temperature: 0°C to +70°C 

Absolute Maximum Ratings

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Storage Temperature

Ts

-40

--

85

°C


Storage Ambient Relative Humidity

HA

0

--

85

%


Maximum Supply Voltage

VCC

-0.5

--

3.6

V


Lead Soldering Temperature/Time

TSOLD

--

--

260/10

°C /sec

1

Lead Soldering Temperature/Time

TSOLD

--

--

360/10

°C /sec

2

Note:
   1.   Suitable for wave soldering. 
   2.   Only for soldering by iron.

Optical Characteristics

Parameter

Transmitter(per lane)

Symbol

Min.

Typ.

Max.

Unit

Note

Signaling Speed per Lane


25.78125 ± 100 ppm

Gb/s

1

Center Wavelength

λC

--

1264.5 ~

1277.5

1284.5 ~

1297.5

1304.5 ~

1317.5

1324.5 ~

1337.5    

--

nm


Extinction Ratio

ER

3.5

--

--

dB


Side Mode Suppression Ratio

SMSR

30

--

--

dB


Total Average Launch Power

Ptot

--

--

8.5

dBm


Average Launch Power, Each Lane

Po

-6.5

--

2.5

dBm


OMA, Each Lane

OMA

-4

--

2.5

dBm

CW,ER>3.5dB

Difference in Launch Power between Any

Two Lanes (OMA)




5

dB


TDP, Each Lane

TDP



3.0

dB

2

Average Launch Power of OFF

Transmitter, Each Lane

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}


3

Receiver(per lane)

Signaling Speed per Lane


25.78125 ± 100 ppm

Gb/s

4

Input Optical Wavelength

λIN


1264.5 ~

1277.5

1284.5 ~

1297.5

1304.5 ~

1317.5

1324.5 ~

1337.5


nm


Damage Threshold


3.5



dBm


Receiver Power (OMA), Each Lane


2.5



dBm


Rx Sensitivity(OMA) per Lane

RSENS



-10

dBm

5

Stressed Receiver Sensitivity (OMA), Each Lane

SRS



-7.3

dBm

6

Conditions of stressed receiver sensitivity test

Vertical Eye Closure Penalty, Each Lane

VECP

1.9


dB



Stressed Eye J2 Jitter, Each Lane

J2

0.33


UI



Stressed Eye J4 Jitter, Each Lane

J4

0.48


UI



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


{0.39, 0.50, 0.50, 0.39, 0.39, 0.4}



Loss of Signal Assert

PA

-24


-13.6

dBm


Loss of Signal De-assert

PD



-11.6

dBm


LOS Hysteresis

PD - PA

0.5


6

dB


Note:
     1.   Transmitter consists of 4 lasers operating at 25.78 Gb/s each.
     2.   TDP value does not include MPI penalty.
     3.   Hit ratio of 5x10-5, per IEEE.
     4.   Receiver consists of 4 photodetectors operating at 25.78 Gb/s each.
     5.   Sensitivity is specified at 5x10-5 BER.
     6.   Measured with CWDM4 MSA2 conformance test signal at TP3 for 5x10-5 BER.

Electrical Interface Characteristics 

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Supply Voltage

VCC

3.135


3.465

V


Supply Current

ICC



1.12

A


Module Total Power

P



3.5

W

1

Transmitter

Signaling Rate per Lane


25.78125±100ppm

Gb/s


Differential Data Input Swing per Lane

Vin, pp

900



mV


Differential Input Return Loss(min)

RLd(f)

9.5 – 0.37f, 0.01≤f<8

4.75-7.4log10(f/14), 8≤f<19

dB


Differential to Common Mode Input Return Loss(min)

RLdc(f)

22-20(f/25.78), 0.01f<12.89

15-6(f/25.78), 12.89f<19

dB


Differential Termination Mismatch




10

%


Eye Width



0.46


UI


Applied Pk-Pk Sinusoidal Jitter


Per IEEE802.3bm Table 88-13

--


Eye Height



95


mV


Receiver

Signaling Rate per Lane


25.78125±100ppm

Gb/s


Differential Data Output Wwing

Vout, pp

100


400

mVpp

2

300


600

400

600

800

600


1200

Eye Width


0.57



UI


Vertical Eye Closure

VEC



5.5

dB


Differential Output Return Loss (min)

RLd(f)

9.5-0.37f, 0.01≤f<8

4.75-7.4log10(f/14), 8≤f<19

dB


Common to Differential Mode Conversion

Return Loss (min)

RLdc(f)

22-20(f/25.78), 0.01≤f<12.89

15-6(f/25.78), 12.89≤f<19

dB


Differential Termination Mismatch




10

%


Note:
     1.   Maximum total power value is specified across the full temperature and voltage range.
     2.   Output voltage is settable in 4 discrete range via I2C.Default range is Range 2 (400 – 800mV).

Digital Diagnostic Functions
Ascent’s QSFP28-100G-LP02 supports transceivers support the I2C-based diagnostics interface specified by the QSFP28 MSA Transceiver temperature.


image.png

Series Recommendation
Related Information

Get in touch with our experts

Feedback