Sign in

Sign in
Reset PasswordCreate an Account

Create an Account

Create an Account
Sign in

400G QSFP-DD FR4 2km

Ascent’s QSFP-DD-FR4-02 is a 400 Gb/s Quad Small Form Factor Pluggable-double density (QSFP-DD) optical module designed for 2km optical communication applications. The module converts 8 channels of 50 Gb/s (PAM4) electrical input data to 4 channels of CWDM optical signals, and multiplexes them into a single channel for 400Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 400Gb/s optical input into 4 channels of CWDM optical signals, and converts them to 8 channels of 50 Gb/s (PAM4) electrical output data. The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM wavelength grid defined in ITU-T G.694.2. It contains a duplex LC connector for the optical interface and a 76-pin connector for the electrical interface. To minimize the optical dispersion in the long-haul system, single-mode fiber (SMF) has to be applied in this module. Host FEC is required to support up to 2 km fiber transmission QSFP-DD-FR2-02 is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP-DD Multi- Source Agreement (MSA) Type 2. It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.

·       Compliant with 400G-FR4 Technical Specification rev 2.0 (100G Lambda MSA) and 400GBASE-FR4(IEEE802.3cu)

·       Compliant with IEEE 802.3bs standard: 400GAUI-8 electrical interface

·       Compliant with QSFP-DD MSA HW Rev 5.0; type 2 housing with duplex LC connector

·       Compliant with QSFP-DD CMIS Rev 4.0

·       Maximum power consumption 12 W

·       Case operating temperature 0°C to 70°C

·       Two wire serial Interface with digital diagnostic monitoring

·       Complies with EU Directive 2011/65/EU (RoHS compliant)

·       Class 1 Laser


Absolute Maximum Ratings

Parameter

Symbol

Min.

Max.

Unit

Note

Storage Temperature

TS

-40

85

°C


Supply Voltage

VCC

-0.5

3.6

V


Relative Humidity (non-condensing)

RH

5

95

%

Non-condensing

Data Input Voltage Differential

lVDIP-VDINl

-

1

V


Control Input Voltage

VI

-0.3

VCC+0.5

V


Control Output Voltage

VI

-20

20

V



Recommended Operating Conditions

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Operating Case Temperature

TOPR

0

-

70

°C


Power Supply Voltage

VCC

3.135

3.3

3.465

V


Instantaneous Peak Current at Hot Plug

ICC_IP

-

-

4800

mA


Sustained Peak Current at Hot Plug

ICC_SP

-

-

3960

mA


Maximum Power Dissipation

PD

-

-

12

W


Maximum Power Dissipation, Low Power Mode

PDLP

-

-

1.5

W


Signaling Rate per Lane

SRL

-

53.125

-

GBd

1

Two Wire Serial Interface Clock Rate

-

-

-

400

kHz


Power Supply Noise Tolerance

-

-

-

66

mV

2

Rx Differential Data Output Load

-

-

100

-

Ω


Operating Distance

-

2

-

2000

m


Notes:

1. PAM4

2. 10 Hz to 10 MHz

Electrical Specification High Speed Signal (compliant with IEEE 802.3bs 400GAUI-8)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Notes

Receiver (Module Output)

AC Common-Mode Output Voltage (RMS)


-

-

17.5

mV


Differential Output Voltage


-

-

900

mV


Near-End Eye Height, Differential


70

-

-

mV


Far-End Eye Height, Differential


30

-

-

mV


Far End Pre-Cursor Ratio


-4.5

-

2.5

%


Differential Termination Mismatch


-

-

10

%


Transition Time (Min., 20% To 80%)


9.5

-

-

ps


DC Common Mode Voltage


-350

-

2850

mV


Transmitter (Module Input)

Differential pk-pk Input Voltage Tolerance


900

-

-

mV


Differential Termination Mismatch


-

-

10

%


Single-Ended Voltage Tolerance Range


-0.4

-

3.3

V


DC Common Mode Voltage


-350

-

2850

mV



Electrical Specification Low Speed Signal (compliant with QSFP-DD HW Rev 5.0)

Parameter

Symbol

Min.

Max.

Unit

Note

Module Output SCL and SDA

VOL

0

0.4

V


Module Input SCL and SDA

VIL

-0.3

VCC*0.3

V



VIH

VCC*0.7

VCC+0.5

V


InitMode, ResetL, and ModSelL

VIL

-0.3

0.8

V



VIH

2

VCC+0.3

V


IntL

VOL

0

0.4

V



VOH

VCC-0.5

VCC+0.3

V



Optical Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Transmitter


Wavelength L0

λC0

1264.5

1271

1277.5

nm


Wavelength L1

λC1

1284.5

1291

1297.5

nm


Wavelength L2

λC2

1304.5

1311

1317.5

nm


Wavelength L3

λC3

1324.5

1331

1337.5

nm


Side Mode Suppression Ratio

SMSR

30

-

-

dB


Average Launch Power, each Lane

AOPL

-3.3

-

3.5

dBm

1

Outer Optical Modulation Amplitude (OMAouter), each Lane

TOMA

-0.3

-

3.7

dBm

2

Difference in Launch Power between any Two Lanes (OMAouter)

DP

-

-

4

dB


Launch Power in OMAouter Minus TDECQ for ER ≥ 4.5 dB, each Lane

TOMA-TDECQ

-1.7

-

-

dBm


Launch Power in OMAouter Minus TDECQ for ER<4.5 dB, each Lane

TOMA-TDECQ

-1.6

-

-



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

TDECQ

-

-

3.4

dB


TDECQ - 10*log10(Ceq), each Lane


-

-

3.4

dB


Average Launch Power of OFF Transmitter, each Lane

TOFF

-

-

-20

dBm


Extinction Ratio, each lane

ER

3.5

-

-

dB


Transmitter Transition Time

TT

-

-

17

ps


RIN17.1OMA

RIN

-

-

-136

dB/Hz


Optical Return Loss Tolerance

ORL

-

-

17.1

dB


Transmitter Reflectance

TR

-

-

-26

dB

3

Receiver


Wavelength L0

λC0

1264.5

1271

1277.5

nm


Wavelength L1

λC1

1284.5

1291

1297.5

nm


Wavelength L2

λC2

1304.5

1311

1317.5

nm


Wavelength L3

λC3

1324.5

1331

1337.5

nm


Damage Threshold, each Lane

AOPD

4.5

-

-

dBm


Average Receive Power, each Lane

AOPR

-7.3

-

3.5

dBm

4

Receive Power (OMAouter), each Lane

OMAR

-

-

3.7

dBm


Difference in Receive Power between any Two Lanes

(Omaouter)

DR

-

-

4.1

dB


Receiver Reflectance

RR

-

-

-26

dB


Receiver Sensitivity (OMAouter), each lane

SOMA

-

-

Max(-4.6,

SECQ-6)

dBm

5

Stressed Receiver Sensitivity (OMAouter), each lane

SRS

-

-

 

-2.6

dBm

6

Conditions of Stressed Receiver Sensitivity Test







Stressed Eye Closure for PAM4 (SECQ)

-

-

3.4

-

dB


SECQ - 10*log10(Ceq), Lane under Test (Max.)

-

-

-

3.4

dB


OMAouter of each Aggressor Lane

-

-

1.5

-

dBm


Notes:

1. Average launch power, each lane (min) is informative and not the principal indicator of signal strength.

2. Even if the TDECQ < 1.4 dB for an extinction ratio of 4.5 dB or TDECQ < 1.3 dB for an extinction ratio of < 4.5 dB, the OMAouter (min.) must exceed this value.

3. Transmitter reflectance is defined looking into the transmitter.

4. Average receive power, each lane (min) is informative and not the principal indicator of signal strength.

5. Receiver sensitivity (OMAouter), each lane (max) is informative and is defined for a transmitter with a value of SECQ up to 3.4 dB.

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

Timing for Soft Control and Status Functions

Parameter

Symbol

Min.

Max.

Unit

Notes

MgmtInit Duration


-

2000

ms


ResetL Assert Time

t_reset_init

10

-

µs


IntL Assert Time

ton_IntL

-

200

ms


IntL Deassert Time

toff_IntL

-

500

µs


Rx LOS Assert Time

ton_los

-

100

ms


Rx LOS Assert Time (fast mode)

ton_losf

-

1

ms


Tx Fault Assert Time

ton_Txfault

-

200

ms


Flag Assert Time

ton_flag

-

200

ms


Mask Assert Time

ton_mask

-

100

ms


Mask Deassert Time

toff_mask

-

100

ms



I/O Timing for Squelch and Disable

Parameter

Symbol

Min.

Max.

Unit

Notes

Rx Squelch Assert Time

ton_Rxsq

-

500

ms


Rx Squelch Deassert Time

toff_Rxsq

-

15

s


Tx Squelch Assert Time

ton_Txsq

-

400

ms


Tx Squelch Deassert Time

toff_Txsq

-

5

s


Tx Disable Assert Time

ton_Txdis

-

100

ms


Tx Disable Assert Time (fast mode)

ton_Txdisf

-

3

ms


Tx Disable Deassert Time

toff_Txdis

-

400

ms


Tx Disable Deassert Time (fast mode)

toff_Txdisf

-

10

ms


Rx Output Disable Assert Time

ton_Rxdis

-

100

ms


Rx Output Disable Deassert Time

toff_Rxdis

-

100

ms


Squelch Disable Assert Time

ton_sqdis

-

NA

ms

Not supported

Squelch Disable Deassert Time

toff_sqdis

-

NA

ms

Not supported


Digital Diagnostics

Parameter

Range

Accuracy

Unit

Calibration

Temperature

0 to 70

±3

°C

Internal

Voltage

0 to VCC

3%

V

Internal

Tx Bias Current (each Lane)

0 to 100

10%

mA

Internal

Tx Output Power (each Lane)

-3.3 to +3.5

±3

dB

Internal

Rx Receive Power (each Lane)

-7.3 to +3.5

±3

dB

Internal

 


image.png
image.png

Series Recommendation
Related Information

Get in touch with our experts

Feedback