Sign in

Sign in
Reset PasswordCreate an Account

Create an Account

Create an Account
Sign in

400G QSFP112 SR4 850 nm 100 m

Ascent’s 400 Gbps QSFP112 SR4 transceiver is suitable for 400G ethernet and data center interconnect applications. It supports link lengths of up to 100m over MMF with MTP/MPO-12 connector. This transceiver is compliant with QSFP112 MSA, CMIS 4.0 Interface and 400GAUI-4 standards.

•    4x100G PAM4 retimed 400GAUI-4 electrical interface

•    MPO-12 APC connector

•    4 channel VCSEL arrays and 4 channels PIN photo detector arrays

•    Maximum link length of 60 m on OM3 or 100 m on OM4

•    Hot-pluggable QSFP112 form factor

•    Compliant with QSFP112_MSA_Specification_Rev2.1.1

•    Compliant with CMIS 5.2

•    Compliant with IEEE 802.3db

•    Compliant with IEEE 802.3ck

•    Less than 8W in temperature range of 0 to 70°C


Absolute Maximum Ratings

Parameter

Symbol

Min.

Max.

Unit

Storage Temperature

Ts

‑40

85

°C

Case Operating Temperature

Top

0

70

°C

Relative Humidity (non‑condensation)

RH

15

85

%

Supply Voltage

Vcc

‑0.5

3.6

V

Receiver Damage Threshold, per Lane

PRdmg

5


dBm

 

Operating Environments 

Parameter

Symbol

Min.

Max.

Unit

Operating Case Temperature

Top

0

70

°C

Relative Humidity(non‑condensing)

RH

15

85

%

Power Supply Voltage

Vcc

3.135

3.465

V

Total Power Consumption1

Pc

‑

8

W

Supply Current per end



2.55

A

Bit Rate

BR


425

Gbps

Fiber Length on OM3 MMF



60

m

Fiber Length on OM4 MMF



100

m

I2C Clock Frequency

0


400

kHz

Note:

Under condition of 3.465V operating supply voltage, and 70°C case temperature.

 

Optical Transmitter

Parameter

Symbol

Min.

Typ.

Max.

Unit

Data Rate per Lane

DR


53.125


GBd

Modulation Format


PAM4


Center Wavelength1

y

840

860

868

nm

RMS Spectral Width

σ



0.6

nm

Average Launch Power, each Lane

Pavg

‑4.6


4

dBm

Optical Power OMA, each Lane, Max.

POMA

3.5

dBm

OMAouter, each Lane, Min.

max (TECQ, TDECQ) <1.8 dB

max [‑2.6, max(TECQ, TECQ) – 4.4]

 

dBm

1.8 < max (TECQ, TDECQ) < 4.4 dB

Transmitter and Dispersion Eye Closure (TDECQ), each Lane

TDECQ



4.4

dB

Transmitter Eye Closure for PAM4 (TECQ), each Lane

TECQ



4.4

dB

Extinction Ratio

ER

2.5



dB

Transmitter Power Excursion, each Lane




2.3

dBm

Optical Return Loss Tolerance

ORLT



14

dB

Optical Power for TX DISABLE




‑30

dBm

Encircled fluxb2


≥86% at 19 µm

≤30% at 4.5 µm


Notes:

1. Defined according to the performance of the laser used.

2. Measured into type A1a.2 or type A1a.3, or A1a.4, 50 um fiber, in accordance with IEC 61280‑1‑

 

Optical Receiver

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Data Rate per Lane

BR


53.125


GBd


Modulation Format


PAM4



Center Wavelength

y

842

850

948

nm


Damage Threshold


5



dBm


Average Receive Power, each Lane


–6.4


4

dBm


Receive Power, each Lane (OMAouter)




3.5

dBm


Receiver Reflectance

Rr



– 15

dB


Receiver Sensitivity, each Lane


RS = max (‑4.6, TECQ – 6.4)

dBm

1

Stressed Receiver Sensitivity, each Lane




–2.0

dBm


Rx LOS

Assert


‑15



dBm


De‑assert




‑7.5

dBm


Hysteresis


0.5


5

dB


Notes: 

1. Receiver sensitivity is informative and is defined for a transmitter with a value of TECQ. Measured with conformance test signal at TP3 for BER = 2.4E‑4 Pre‑FEC. 

 

Electrical Specification

Parameters

Min.

Typ.

Max.

Unit

Pre FEC Bit Error Ratio



2.4E‑4


Post FEC Bit Error Ratio



1E‑12


Transmitter (each Lane)

Differential pk‑pk Input Voltage Tolerance

750



mV

Differential Termination Mismatch



10

%

Eye Height

10



mV

Common‑Mode to Differential‑Mode Return Loss

IEEE802.3ck Equation (120G– 1)

dB

Vertical Eye Closure



12

dB

Effective Return Loss

7.3



dB

Transition Time

10



ps

Receiver (each Lane)

Differential data output swing

300


900

mVpp

Differential Termination Mismatch



10

%

Eye Height

15



mV

Vertical Eye Closure



12

dB

Common‑Mode to Differential‑Mode Return Loss

IEEE802.3ck Equation (120G– 1)


Effective Return Loss

8.5



dB

Transition Time

8.5



ps

 


Series Recommendation
Related Information

Get in touch with our experts

Feedback