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ZK-OSFP-400G-SR4

ZK-OSFP-400G-SR4

Product Descriptions

400GBASE SR4 OSFP 850nm 50m MPO-12/APC DDM MMF Optical Transceiver Module

Product Description

ZK-OSFP-400G-SR4

400Gbps OSFP SR4 850nm 50m MMF Transceiver

 

Features

n Supports 425Gbps

n Single 3.3V Power Supply

n Power dissipation：

Commercial version <8W

n 4x53.125GBd (PAM4) Electrical Interface

n MPO-12 Connector APC

n Up to 50m over OM4 and 30m over OM3

n Case Temperature Range: 0°C to 70°C

n VCSEL Transmitter

n PIN and TIA Array on the Receiver Side

n I2C Interface with Integrated Digital Diagnostic Monitoring

n Safety Certification: TUV/UL/FDA*1

n RoHS Compliant

n OSFP MSA Compliant


Applications

n 400GBASE-VR4

 

Description

OSFP 400G SR4 transceiver module is designed for use in 400G Ethernet links up to 50m over

OM4 and 30m over OM3 multi-mode fiber. The module has 4 independent electrical input/output channels

operating at 106.25Gbps per channel. This transceiver consists a transmitter/receiver unit operating on 850nm

wavelengths. The transmitter path of the module incorporates a PAM4 re-timer ASIC integrated with a

4-channel modulators driver, 4 externally modulated lasers. On the receiver path, there are 4 photodiodes and

one 4-channel linear TIA arrays, along with the PAM4 re-timer. The electrical interface of the module is

compliant with the 400GAUI-4 interface as defined by IEEE 802.3ck. 

 图片1.png


Absolute Maximum Ratings

Parameter

Symbol

Min

Typ.

Max

Unit

Storage Temperature

Ts

-40


85

°C

Power Supply Voltage

Vcc

-0.5

3.3

3.6

V

Relative Humidity (non-Condensing)

RH

5


85

%

 

Recommended Operating Conditions

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Operating Case Temperature

Tc

0


70

°C


Power Supply Voltage

Vcc

3.135

3.3

3.465

V


Power Supply Noise




50

mVpp


Receiver Differential Data Output Load



100


Ohm


Fiber Length (OM3)

OM3



30

m


Fiber Length (OM4)

OM4



50

m


Note：

1. Power Supply specifications, Instantaneous, sustained and steady state current compliant with QSFP112 MSA Power Classification.

 

Optical Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Transmitter

Signaling Rate, each Lane

DR


53.125±100ppm


GBd


Modulation Format



PAM4




Center Wavelength

λ

842


948

nm


RMS Spectral Width

RMS



0.6

nm


Average Launch Power, each Lane

Pavg

-4.6


4

dBm


Outer Optical Modulation Amplitude (OMAouter), each Lane (max)

POMA  



3.5

dBm


Outer Optical Modulation Amplitude(OMAouter), each Lane (min) for max (TECQ, TDECQ) ≤1.8dB

POMA  

-2.6



dBm


Outer Optical Modulation Amplitude(OMAouter), each Lane (min) for 1.8<max (TECQ, TDECQ) ≤4.4dB

POMA

-4.4+max

(TECQ,TDECQ)



dBm


TDECQ (PAM4), Per Lane

TDECQ



4.4

dB


Overshoot/Undershoot




29

%


Transmitter Power Excursion, each Lane




2.3

dBm


Extinction Ratio, each Lane

ER

2.5



dB


Transmitter Transition Time, each Lane




17

ps


Average Launch Power of OFF Transmitter, each Lane

Poff 



-30

dBm


RIN12OMA

RIN12OMA



-132

dB/Hz


Optical Return Loss Tolerance

ORL



12

dB


Encircled Flux

EF

≥86% at 19 mm

≤30% at 4.5 mm


Receiver

Signaling Rate, each Lane



53.125±

100ppm


GBd


Modulation Format



PAM4




Center Wavelength

λ

842


948

nm


Damage Threshold


5



dBm


Average Receiver Power, each Lane


-6.4


4

dBm


Receiver Power, each Lane (OMAouter)




3.5

dBm


Receiver Reflectance




-12

dB


Receiver Sensitivity (OMAouter) for TECQ≤1.8dB(BER<2.4E-4)

SEN



-4.6

dBm


Receiver Sensitivity (OMAouter) for 1.8<TECQ≤4.4dB(BER<2.4E-4)

SEN



6.4+TECQ

dBm


LOS Assert

LOSA

-15



dBm


LOS De-Assert

LOSD



-9

dBm


Stressed Receiver Sensitivity (OMAouter), each Lane(BER<2.4E-4)




-2.0

dBm


 
Electrical Interface Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Receiver

Signaling Rate per Lane

TP1


53.125±

100ppm


GBd


Differential peak-peak Input Voltage Tolerance

TP1a

750



mV


AC Common-Mode RMS Voltage Tolerance

TP1a

25



mV


Differential-Mode to Common-Mode Return Loss,RLcd

 

TP1

Equation (120G-2)



 

dB


Effective Return Loss, ERL

TP1

8.5



dB


Differential Termination Mismatch

TP1



10

%


Single-Ended Voltage Tolerance Range

TP1a

-0.4


3.3

V


DC Common-Mode Output Voltage

TP1

-350


2850

mV


Module Stressed Input Tolerance

TP1a


120G.3.4.3




Applied peak-peak Sinusoidal Jitter



Table

120G--10




Eye Height (Target)



10


mV


Transmitter

Signaling Rate per Lane

TP4


53.125±

100ppm


GBd


AC Common-Mode Output Voltage (RMS)

TP4



25

mV


Differential Peak-to-Peak Output Voltage(Short Mode)

TP4



600

mV


Differential Peak-to-Peak Output Voltage(Long Mode)

TP4



845

mV


Eye Height

TP4

15



mV


Vertical Eye Closure, VEC

TP4



12

dB


Common to Differential Mode  Conversion Return Loss

TP4

Equation (120G-1)





Effective Return Loss

TP4

8.5



dB


Differential Termination Mismatch

TP4



10

%


Transition Time (20% ~80%)

TP4

8.5



ps


DC Common Mode Voltage Tolerance

TP4

-350


2850

        mV


 

Pin Description
image.png


Pin

Logic

Symbol

Description

Plug Sequence

Note

1

CML-I

GND

Ground

1

1

2

CML-I

Tx2n

Transmitter Inverted Data Input

3


3


Tx2p

Transmitter Non-Inverted Data Input

3


4

CML-I

GND

Ground

1

1

5

CML-I

Tx4n

Transmitter Inverted Data Input

3


6


Tx4p

Transmitter Non-Inverted Data Input

3


7

LVTTL-I

GND

Ground

1

1

8

LVTTL-I

ModSelL

Module Select

3


9


ResetL

Module Reset

3


10

LVCMOS-

VccRx

+3.3V Power Supply Receiver

1

1

11

I/O

SCL

2-wire serial interface clock

3


12

LVCMOS-

SDA

2-wire serial interface data

3


13

I/O

GND

Ground

1

1

14


Rx3p

Receiver Non-Inverted Data Output

3

2

15

CML-O

Rx3n

Receiver Inverted Data Output

2


16

CML-O

GND

Ground

2


17


Rx1p

Receiver Non-Inverted Data Output

3


18

CML-O

Rx1n

Receiver Inverted Data Output

1

1

19

CML-O

GND

Ground

3


20


GND

Ground

3


21


Rx2n

Receiver Inverted Data Output

1

1

22

CML-O

Rx2p

Receiver Non-Inverted Data Output

3


23

CML-O

GND

Ground

3


24


Rx4n

Receiver Inverted Data Output

1

1

25

CML-O

Rx4p

Receiver Non-Inverted Data Output

3


26

CML-O

GND

Ground

3


27


ModPrsL

Module Present

1

1

28

LVTTL-O

IntL

Interrupt

3


29

LVTTL-O

VccTx

+3.3V Power supply transmitter

3


30


Vcc1

+3.3V Power supply

1

1

31


LPMode

Low Power Mode

1

1

32

LVTTL-I

GND

Ground

3


33


Tx3p

Transmitter Non-Inverted Data Input

3


34

CML-I

Tx3n

Transmitter Inverted Data Input

1

1

35

CML-I

GND

Ground

3


36


Tx1p

Transmitter Non-Inverted Data Input

3


37

CML-I

Tx1n

Transmitter Inverted Data Input

1

1

38

CML-I

GND

Ground

3


GND is the symbol for signal and supply (power) common for the QSFP112 module. All are common

Notes:

1. OSFP uses common ground (GND) for all signals and supply (power). All are common within the OSFP module and all module voltages are referenced to this potential unless otherwise noted.

2. Open-Drain with pull up resistor on Host.

 
Mechanical Dimensions
image.png

Important Notice

Performance figures, data and any illustrative material  provided  in this  data sheet  are typical  and  must  be specifically confirmed in writing by Zkosemi before they become applicable to any particular order or contract. In accordance with the Zkosemi policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of Zkosemi or others. Further details are available from any Zkosemi sales representative.