Description
The F-tone Networks FTQ2-HG-SR4 is a Four-Channel, Pluggable, Parallel, Fiber-Optic QSFP28 SR4 for 100 or 40 Gigabit Ethernet and Infiniband FDR/EDR Applications. This transceiver is a high performance module for short-range multi-lane data communication and interconnect applications. Each lane can operate at 25.78125Gbps up to 70 m using OM3 fiber 100m using OM4 fiber w/o FEC or 300m OM4 MMF with KR-FEC. These modules are designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 38 contact edge type connector. The optical interface uses an 12 fiber MTP (MPO) connector. This module incorporates F-tone Networks proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service.

Features
● Hot-pluggable QSFP28 form factor
● 4 channels full-duplex transceiver module
● Supports 4*25.78125Gb/s bit rate
● 4 channels 850nm VCSEL array
● 4 channels PIN photo-detector array
● Internal CDR circuits on both receiver and transmitter channels
● Supports CDR bypass
● 2W maximum power dissipation
● Maximum link length of 70m on OM3 MMF and 100m on OM4 MMF w/o FEC or 300m on OM4 MMF with FEC
● Single MTP/MPO receptacle
● Built-in digital diagnostic functions
● Operating case temperature range: 0°C to 70°C
● 3.3V power supply voltage
● RoHS 6 compliant (lead free)

Applications
● 100GBASE-SR4 100G Ethernet
● 40GBASE SR4 40G Ethernet

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Supply Voltage

Vcc

-0.3

3.6

V

Input Voltage

Vin

-0.3

Vcc+0.3

V

Storage Temperature

Ts

-20

85

ºC

Case Operating Temperature

Tc

0

70

ºC

Humidity (non-condensing)

Rh

5

95

%

Recommended Operating Conditions

Parameter

Symbol

Min

Typical

Max

Unit

Supply Voltage

Vcc

3.13

3.3

3.47

V

Operating Case Temperature

Tc

0

70

ºC

Data Rate Per Lane

fd

25.78125

Gb/s

Humidity

Rh

5

85

%

Power Dissipation

Pm

2

W

Fiber Bend Radius

Rb

3

cm

 

Electrical Specifications

Parameter

Symbol

Min

Typical

Max

Unit

Differential Input Impedance

Zin

90

100

110

ohm

Differential Output Impedance

Zout

90

100

110

ohm

Differential Input Voltage Amplitude1

ΔVin

300

1100

mVp-p

Differential Output Voltage Amplitude2

ΔVout

500

800

mVp-p

Skew

Sw

300

ps

Bit Error Rate

BER

5e-5

1e-12

Input Logic Level High

VIH

2.0

Vcc

V

Input Logic Level Low

VIL

0

0.8

V

Output Logic Level High

VOH

Vcc-0.5

Vcc

V

Output Logic Level Low

VOL

0

0.4

V

 Note:

  • Differential input voltage amplitude is measured between TxnP and TxnN.
  • Differential output voltage amplitude is measured between RxnP and RxnN.

Optical Characteristics 

Parameter

Symbol

Min

Typical

Max

Unit

Transmitter

Center Wavelength

λc

840

850

860

nm

RMS Spectral Width

∆λ

0.6

nm

Average Launch Power (each lane)

Pout

-8.4

2.4

dBm

Optical Modulation Amplitude (each lane)

OMA

-6.4

3

dBm

Transmitter and Dispersion Eye Closure (each lane)

TDEC

4.3

dB

Extinction Ratio

ER

3

dB

Average Launch Power of OFF Transmitter (each lane)

Poff

-30

dB

Eye Mask Coordinates1: X1, X2, X3, Y1, Y2, Y3

{0.3, 0.38, 0.45, 0.35, 0.41, 0.5}

Receiver

Center Wavelength

λc

840

850

860

nm

Stressed Receiver Sensitivity in OMA2

-5.2

dBm

Average Power at Receiver

Input (each lane)

-10.3

2.4

dBm

Receiver Reflectance

RR

-12

dB

LOS Assert

LOSA

-30

dBm

LOS De-Assert – OMA

LOSD

-7.5

dBm

LOS Hysteresis

LOSH

0.5

dB

Note:

  • Hit Ratio = 5×10-5
  • Measured with conformance test signal at TP3 for BER=1E-12

Mechanical Dimensions44

Ordering Information

Part Number

Product Description

FTQ2-HG-SR4

QSFP28 SR4, 4*25.78125Gb/s, 850nm, 100m OM4 MMF w/o FEC or 300m OM4 MMF with FEC  , MTP/MPO

 

 

 

 

 

 

 

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注：本产品有全国产化型号可选

Important Notice

Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks 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 F-tone Networks or others. Further details are available from any F-tone Networks sales representative.