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100G QSFP28OA LR4 10km

Ascent’s 100G QSFP28 LR4 Optical Transceiver offers service providers, network operators 100 Gigabit Ethernet connectivity options for data center networking, enterprise core aggregation, and service provider transport applications. It integrates receiver and transmitter path on one module. In the transmit side, four lanes of serial data streams are recovered, retimed, and passed to four laser drivers. The laser drivers control 4 × Distributed Feedback Laser (DFB) with center wavelengths of 1296 nm, 1300 nm, 1305 nm, and 1309 nm. The optical signals are multiplexed to a single-mode fiber through an industry standard LC connector. In the receive side, the four lanes of optical data streams are optically de-multiplexed by the integrated optical de-multiplexer. Each data stream is recovered by a PIN photo-detector and trans-impedance amplifier, retimed. This module features a hot-pluggable electrical interface, low power consumption and MDIO management interface. This product is designed with form factor, optical/electrical connections, and digital diagnostic interface according to the QSFP28 Multi-Source Agreement (MSA) and compliant with IEEE802.3ba-2010 and 802.3bm.

·       Compliant with 100GBASELR4

·       Support line rates up to 103.125 Gbps

·       Integrated LAN WDM TOSA / ROSA for up to 10 km reach over SMF

·       Digital Diagnostics Monitoring Interface

·       Duplex LC optical receptacle

·       No external reference clock

·       Electrically hot-pluggable

·       Compliant with QSFP28 MSA with LC connector

·       Compatible with SONET OC-192, SDH STM-64

·       Power dissipation < 4 W

·       RoHS compliant


 Absolute Maximum Ratings 

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Storage Temperature

Ts

-40

-

85

°C


Relative Humidity

RH

5

-

95

%


Power Supply Voltage

VCC

-0.3

-

4

V


Signal Input Voltage


Vcc-0.3

-

Vcc+0.3

V


Recommended Operating Conditions

Parameter

Symbol

Min.

Typ.

Max.

Unit

Note

Case Operating Temperature

Tcase

0

-

70

°C

QSFP-28-100G-LP-10



-10

-

85

°C

QSFP-28-100G-LP-10E

Power Supply Voltage

VCC

3.13

3.3

3.47

V


Power Supply Current

ICC



1010

mA

QSFP-28-100G-LP-10





1150

mA

QSFP-28-100G-LP-10E

Data Rate

BR


25.78125


Gbps

Each channel

Transmission Distance

TD


-

10

km


Coupled fiber

Single-mode fiber

9/125 µm SMF

Optical Characteristics

Parameter

Symbol

Min

Typ.

Max

Unit

Notes

Transmitter







Signaling Speed per Lane



25.78125 ± 100 ppm


Gbps


Wavelength Assignment

λ0

1294.53

1295.56

1296.59

nm


λ1

1299.02

1300.05

1301.09

nm


λ2

1303.54

1304.58

1305.63

nm


λ3

1308.09

1309.14

1310.19

nm


Total Output Power

POUT



10.5

dBm


Transmit OMA per Lane


-1.3


4.5

dBm


Average Launch Power per Lane


-4.3


4.5

dBm


SMSR


30



dB


Optical Extinction Ratio

ER

4



dB


Average launch Power off per lane

Poff



-30

dBm


RIN

RIN



-130

dB/Hz


Output Eye Mask Definition

{X1, X2, X3, Y1, Y2, Y3}

{0.25, 0.4, 0.45, 0.25, 0.28, 0.4}

1

Receiver







Signaling Speed per Lane



25.78125 ± 100 ppm


Gbps


Wavelength Assignment


1294.53

1295.56

1296.59

nm




1299.02

1300.05

1301.09

nm




1303.54

1304.58

1305.63

nm




1308.09

1309.14

1310.19

nm


Receive Power (OMA) per Lane

ROMA



4.5

dBm


Average Input Power per Channel

RXPx

-10.6


4.5

dBm

2

Rx Sensitivity per lane

RSENS



-8.6

dBm


LOS De-Assert

LOSD

-30



dBm


LOS Assert

LOSA



-12

dBm


Receiver Reflectance

Rr



-26

dB


Notes: 

1.       Hit ratio 5x10-5.

2.       Measured with a PRBS 231-1 test pattern, @ 25.78Gb/s, BER<10-12 at RX sensitive.

Electrical Characteristics

Parameter

Symbol

Min

Typ.

Max

Unit

Note

Supply Voltage

Vcc

3.13

3.3

3.47

V


Supply Current

Icc



1010

mA

QSFP-28-100G-LP-10





1150

mA

QSFP-28-100G-LP-10E

Transmitter







Input Differential Impedance

Rin


100


Ω

1

Differential Data Input Swing

Vin, pp

180


1000

mV


Transmit Disable Voltage

VD

Vcc-1.3


Vcc

V


Transmit Enable Voltage

VEN

Vee


Vee+0.8

V

2

Receiver







Differential Data Output Swing

Vout, pp

300


850

mV

3

LOS Fault

VLOSfault

Vcc-1.3


VccHOST

V

4

LOS Normal

VLOSnorm

Vee


Vee+0.8

V

4

Notes:

1.       Connected directly to TX data input pins. AC coupled thereafter. 

2.       Or open circuit. 

3.       Into 100 Ω differential termination. 

4.       Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected. 


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