Description
The F-tone Networks 200G QSFP56 SR4 (FTQ2-2H-SR4-M2-xxx) is designed for use in 200 Gigabit Ethernet links over OM3/OM4/OM5 multimode fiber. They are compliant with the QSFP MSA and with IEEE 802.3cd 200GBASE-SR4 specification. Digital diagnostics functions are available via the I2C interface as specified by CMIS V4.0. The transceiver is RoHS 2.0 compliant and lead-free per Directive 2011/65/EU.

Features
● Hot-pluggable QSFP56 form factor
● Built-in 200G PAM4 DSP
● Supports 212.5Gb/s aggregate bit rates
● Supports 103.1Gb/s aggregate bit rates if requiredNote1
● Low power dissipation < 5W
● RoHS-6 compliant (lead-free)
● Single 3.3V power supply
● Maximum link length of 70m on OM3 MMF and 100m on OM4 & OM5 MMF
● Uncooled 4 channels 850nm VCSEL array
● 4 channels PIN photo detector array
● 200GAUI-4 electrical interface
● Single MPO12 receptacle
● CMIS V4.0 compliant
● Built-in digital diagnostic functionality
● Case operating temperature
     Commercial: 0 ~ +70℃
     Industrial: -40 ~ +85℃

Applications
● 200GBASE-SR4 200G Ethernet
● Especially design for liquid immersion environment

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

60

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

60

ºC

Data Rate Per Lane

fd

26.5625

Gb/s

Humidity

Rh

5

85

%

Power Dissipation

Pm

4.1

4.5

W

Fiber Bend Radius

Rb

3

cm

Liquid immersion depth

10

m

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 AmplitudeNote2

ΔVin

300

900

mVp-p

Differential Output Voltage Amplitude

ΔVout

300

900

mVp-p

Bit Error RateNote3

BER

2.4E-4

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:
Note2. Suggested < 700mVpp input differential signal for better BER performance.

Note3. Compliant with 200GBASE-SR4 electrical specification in IEEE802.3cd standard.

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

-6

4

dBm

Optical Modulation Amplitude (each lane)

OMA

-4

3

dBm

Launch power in OMAouter minus TDECQ

Ptdecq

-5.9

dBm

Transmitter and Dispersion Eye Closure (each lane)

TDEC

4.9

dB

Average launch power of off transmitter(each lane)

Poff

-30

dBm

Extinction Ratio

ER

3

dB

Optical Return Loss Tolerance

ORLT

12

dB

Receiver

Center Wavelength

λc

840

850

860

nm

Damage threshold

Rdam

5

dBm

Average Receive Power (each lane)

Pin

-7.9

4

dBm

Receiver Power (OMAouter) (each lane)

OMAout

3

dBm

Receiver reflectance

Pref

-12

dB

Stressed Receiver Sensitivity (OMAouter) (each lane)

Sens

-3

dBm

Receiver Sensitivity (OMAouter) (each lane) Note4

Sen

-7

dB

Note:
Note4. Measured with conformance test signal at TP3 for the BER specified in section 138.1.1 of IEEE 802.3cd.

Mechanical Dimensions72

Ordering Information

Part Number

Product Description

FTQ2-2H-SR4-M2-xxx

QSFP56 SR4, 212.5Gb/s, male MTP pigtail ,liquid immersion,0ºC ~ +70ºC

FTQ2-2H-SR4-M2-xxxI

QSFP56 SR4, 212.5Gb/s, male MTP pigtail ,liquid immersion,-40ºC ~ +85ºC