Description
The F-tone Networks Technologies FTQD-2H-SR4xx is a Eight-Channel, Pluggable, Parallel, Fiber-Optic QSFP Double Density for 2x100 Gigabit Ethernet Applications. This transceiver is a high performance module for short-range multi-lane data communication and interconnect applications. It integrates eight data lanes in each direction with 8x25.78125Gbps bandwidth. Each lane can operate at 25.78125Gbps up to 70 m using OM3 fiber or 100 m using OM4 fiber. These modules are designed to operate over multimode fiber systems using a nominal wavelength of 850nm. The electrical interface uses a 76 contact edge type connector. The optical interface uses an 24 fiber MTP (MPO) connector. This module incorporates F-tone Networks Technologies proven circuit and VCSEL technology to provide reliable long life, high performance, and consistent service.

Features
● 8 channels full-duplex transceiver modules
● Transmission data rate up to 26Gbps per channel
● 8 channels 850nm VCSEL array
● 8 channels PIN photo detector array
● Internal CDR circuits on both receiver and transmitter channels
● Support CDR bypass
● Low power consumption <4W
● Hot Pluggable QSFP DD form factor
● Maximum link length of 70m on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF
● MPO24 connector receptacle
● 3.3V power supply voltage
● RoHS 6 compliant(lead free)
● Case operating temperature
     Commercial: 0 ~ +70℃
     Industrial: -40 ~ +85℃

Applications
● IEEE 802.3bm 100GBASE SR4

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

Tst

-20

85

ºC

Case Operating Temperature

Top

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

Tca

0

70

ºC

Data Rate Per Lane

fd

25.78125

Gbps

Humidity

Rh

5

85

%

Power Dissipation

Pm

4

W

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 amplitude  aAmplitude

ΔVin

300

1100

mVp-p

Differential output voltage amplitude

ΔVout

500

800

mVp-p

Skew

Sw

300

ps

Bit Error Rate

BER

5E-5

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：
1.   BER=5E-5; PRBS 2^31-1@78125Gbps. Pre-FEC
2.   Differential input voltage amplitude is measured between TxnP and TxnN.
3.   Differential output voltage amplitude is measured between RxnP and RxnN.

Optical Characteristics 
Table 3 - Optical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre 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

(OMA),each lane

OMA

-6.4

3

dBm

-

Transmitter and dispersion eye closure(TDEC),each lane

TDEC

4.3

dB

Extinction Ratio

ER

3

-

-

dB

-

Average launch power of OFF

transmitter, each lane

-30

dB

-

Eye Mask coordinates:

   X1, X2, X3, Y1, Y2, Y3

SPECIFICATION VALUES

{0.3,0.38,0.45,0.35,0.41.0.5}

Hit Ratio = 5x10-5

Receiver

Centre Wavelength

λc

840

850

860

nm

-

Stressed receiver sensitivity in OMA

-5.2

dBm

1

Maximum Average power at receiver , each lane

input, each lane

2.4

dBm

-

Minimum Average power at receiver , each lane

-10.3

dBm

Receiver Reflectance

-12

dB

-

LOS Assert

-30

dBm

-

LOS De-Assert – OMA

-7.5

dBm

-

LOS Hysteresis

0.5

dB

-

Note：1．Measured with conformance test signal at TP3 for BER = 5E-5 Per-FEC

Mechanical Dimensions55

Ordering information

Part Number

Product Description

FTQD-2H-SR4

QSFP DD, 2x100GBASE-SR4, 70m on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF ,0ºC ~ +70ºC

FTQD-2H-SR4I

QSFP DD, 2x100GBASE-SR4, 70m on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF ,-40ºC ~ +85ºC

 

 

 

 

 

 

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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.