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400G OSFP SR4 FLT 50m Transceiver

Ascent’s OSFP-400G-SR4A05 is a 400Gb/s Octal Small Form-factor Pluggable (OSFP) optical module without a top open fin designed for 50m with OM4 fiber optical communication applications. The module converts 4 channels of 100Gb/s (PAM4) electrical input data to 4 channels of parallel optical signals, each capable of 100Gb/s operation for an aggregate data rate of 400Gb/s. Reversely, on the receiver side, the module converts 4 channels of parallel optical signals of 100Gb/s each channel for an aggregate data rate of 400Gb/s into 4 channels of 100Gb/s (PAM4) electrical output data. MPO-12 connector can be plugged into the OSFP112 SR4 module jack with 4 channels. Proper alignment is ensured by the guide pins inside the receptacle. The cable usually cannot be twisted for proper channel-to-channel alignment. The electrical connection is achieved through an OSFP MSA-compliant edge-type connector. The I2C interface is supported to read and control the status of this product.

·       OSFP form factor hot pluggable

·       CMIS compliance

·       4 parallel lanes of 100G-PAM4 electrical and optical parallel lanes

·       Optical port of MPO-12/APC

·       Up to 50m reach on multi-mode fiber OM4 and 30m on OM3 with FEC

·       9 Watts max

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

·       Adaptive Tx input equalization

·       Programmable Rx output amplitude, Rx output pre-cursor, Rx output post-cursor

·       Supply voltage monitoring (DDM_Voltage)

·       Transceiver case temperature monitoring (DDM_Temperature)

·       Tx transmit optical power monitoring for each lane (DDM_TxPower)

·       Tx bias current monitoring for each lane (DDM_TxBias)

·       Rx receive optical power monitoring for each lane (DDM_RxPower)

·       Warning and alarm indication for each DDM function

·       Tx & Rx LOL and LOS indication

·       Tx fault indication

·       Host and line side loopback capabilities

·       Host and line side PRBS generator and checker capabilities

·       CDB firmware upgrade capability

·       Versatile diagnostics monitoring (VDM) capability (optional, additional power consumption increase)

·       Other functions defined in CMIS

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.

Unit

Note

Storage Temperature

TS

-40

85

°C


Operating Case Temperature

TOP

0

70

°C


Power Supply Voltage

VCC

-0.5

3.6

V


Relative Humidity (non-condensation)

RH

0

85

%


Recommended Operating Conditions

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Operating Case Temperature

TOP

0


70

°C


Power Supply Voltage

VCC

3.135

3.3

3.465

V


Data Rate, each Lane



53.125


GBd

PAM4

Data Rate Accuracy


-100


100

ppm


Pre-FEC Bit Error Ratio




2.4x10-4



Post-FEC Bit Error Ratio




1x10-12


1

Link Distance

D

2


50

m

2

Notes:

1.       FEC provided by host system.

2.       FEC required on host system to support maximum transmission distance.

Electrical Characteristics

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

 

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Power Consumption




9.0

W


Supply Current

Icc



2.87

A


Transmitter (each Lane)

Signaling Rate, each Lane

TP1

53.125 ± 100 ppm

GBd


Differential pk-pk Input Voltage Tolerance

TP1a

750



mV


Peak-to-Peak AC Common-mode Voltage Tolerance Low-frequency, VCMLF Full-Band, VCMFB

TP1a

32



mV



80





Differential-Mode to Common-Mode Return Loss, RLcd

TP1

IEEE 802.3ck Equation (120G– 2)



dB










Effective Return Loss, ERL

TP1

8.5



dB


Differential Termination Mismatch

TP1a



10

%


 Module Stressed Input Tolerance

TP1a

IEEE802.3ck 120G.3.4.3

V


Single-Ended Voltage


Tolerance Range

TP1

-0.4 to 3.3



mV




DC Common-Mode Voltage Tolerance


Upper limit


Lower limit

TP1

2.85

V



-0.35





Receiver (each Lane)

Signaling Rate, each Lane

TP4

53.125 ± 100 ppm

GBd





Peak-to-Peak AC Common- Mode Voltage


Low-Frequency, VCMLF


Full-Band, VCMFB

TP4



32

mV



80





Differential Peak-to-Peak Output Voltage


Short Mode


Long Mode

TP4



600

mV



845





Eye Height

TP4

15



mV


Vertical Eye Closure, VEC

TP4



12

dB


Common-Mode to Differential-Mode Return Loss, RLdc

TP4

IEEE802.3ck Equation   (120G– 1)



dB




Effective Return Loss, ERL

TP4

8.5



dB

Differential Termination Mismatch

TP4



10

%


Transition Time

TP4

8.5



ps


DC Common-Mode Voltage Tolerance


Upper Limit


Lower Limit

TP4

2.85

mV



-0.35





Optical Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Transmitter







Data Rate, each Lane


53.125 ± 100 ppm

GBd


Modulation Format


PAM4



Wavelength

λ

842


948

nm


RMS Spectral Width


Average Launch Power, each Lane




0.65

nm

1

PAVG

-4.6


4

dBm


Outer Optical Modulation  Amplitude (OMAouter), each Lane

POMA

-2.6(For max (TECQ, TDECQ) ≤ 1.8 dB)

-4.4 +max(TECQ, TDECQ)

( For 1.8 max (TECQ, TDECQ) ≤ 4.4 dB)


3.5

dBm









Transmitter and Dispersion Eye Closure for PAM4 (TDECQ), each Lane

TDECQ



4.4

dB





Transmitter Eye Closure for PAM4, each Lane

TECQ

 



4.4

dB






Overshoot/Undershoot




29

%


Transmitter Power Excursion, each Lane


2.5


2.3

dBm


Extinction Ratio

ER

2.5



dB


Transition Time

Tt



17

ps


Average Launch Power of  OFF Transmitter, each Lane

Poff



-30

dBm





RIN14 OMA

RIN



-132

dB/Hz


Optical Return Loss Tolerance

TOL



14

dB


Encircled Flux


≥ 86% at 19 μm

≤ 30% at 4.5 μm


2




Receiver

Data Rate, each Lane


53.125 ± 100 ppm

GBd


Modulation Format


PAM4



Center Wavelength

λ

842


948

Nm


Damage Threshold, each Lane

THd

5



dBm

3

Average Receive Power, each Lane


-6.3


4

dBm

4

Receive Power (OMAouter), each Lane




3.5

dBm


Receiver Reflectance

RR



-15

dB


Receiver Sensitivity OMAouter), each Lane

SEN



-4.4(For

TECQ ≤

1.8 dB )

– 6.2 +

TECQ   ( For 1.8TECQ

≤ 4.4 dB)

dBm

5









Stressed Receiver Sensitivity (OMAouter), each Lane

SRS



-1.8

dBm

6



dBm


LOS Assert

LOSA

-15



dBm


LOS De-assert

LOSD



-9.2

dBm


LOS Hysteresis

LOSH

0.5



dB


Conditions of Stress Receiver Sensitivity Test (Note 7)

Stressed Eye Closure for  PAM4 (SECQ), Lane under Test



4.4


dB




OMAouter of each Aggressor Lane



3.5


dBm


Notes:

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

2.          If measured into type A1a.2 or type A1a.3, or A1a.4, 50 μm fiber, by IEC 61280- 1-4.

3.          The receiver shall be able to tolerate, without damage, continuous exposure to a modulated optical input signal having this power level on one lane. The receiver does not have to operate correctly at this input power.

4.          Average receive power, each lane (min) is informative and not the principal indicator of signal strength. A received power below this value cannot be compliant; however, a value above this does not ensure compliance.

5.          Receiver sensitivity (OMAouter ) is informative and is defined for a transmitter with a value of TECQ up to 4.4 dB. Receiver sensitivity should meet Equation (1), which is illustrated in below figure.

 

RS = max (−4.4, TECQ – 6.2) dBm (1)

Where:

RS is the receiver sensitivity, and

TECQ is the TECQ of the transmitter used to measure the receiver sensitivity.

6.          Measured with conformance test signal at TP3 for the BER equal to 2.4x10-4.

7.          These test conditions are for measuring stressed receiver sensitivity. They are not characteristics of the receiver.

 

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Digital Diagnostic Functions

Parameter

Symbol

Min.

Max.

Unit

Note

Temperature Monitor Absolute Error

DMI_Temp

-3

3

°C

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:

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

ESD

 This transceiver is specified as ESD threshold 1kV for high speed data 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 Class I Laser Product, or Class 1 Laser Product according to IEC/EN 60825-1:2014.
 This product complies with 21 CFR 1040.10 and 1040.11 except for conformance with IEC 60825-1 Ed. 3., as described in Laser Notice No. 56, dated May 8, 2019.
 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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