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200G QSFP56 SR4 100m 850nm PM4 Transceiver

Features

QSFP56 Serial Optical Interface

4x50G PAM4 retimed 200GAUI-4 C2M electrical interface

MPO-12 connector
4 channel VCSEL array and 4 channels PIN photodetector array >Maximum link length of 70m on OM3 or 100m on OM4

QSFP MSA Compliant

Hot Pluggable QSFP56 form factor
Compliant with SFF8636 Rev 2.10a

Support Protocol

Compliant with IEEE 802.3cd

Low Power Consumption

Less than 5W in temperature range of 0 to 70℃

Applications

200GBASE-SR4200G Ethernet
Data center

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200G QSFP56 SR4 100m 850nm MPO PM4 Optical Transceiver

Functional Block Diagram

200G QSFP56 SR4

General Description

200G QSFP56 SR4 Optical Transceiver modules are designed for use in 200Gigabit Ethernet links over OM3/OM4 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 SFF-8636.The transceiver is RoHS 2.0 compliant and lead-free per Directive 2011/65/EU.

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Storage Temperature	Ts	-40	85	℃
Relative Humidity (non-condensation)	RH		85	%
Supply Voltage	Vcc	-0.5	3.6	V
Receiver Damage Threshold, per Lane	PR dmg	5		dBm

Recommended Operating Conditions

Parameter	Symbol	Min	Max	Unit
Operating Case Temperature	Top	0	70	℃
Power Supply Voltage	Vcc	3.135	3.465	V
Total Power Consumption	Pc		5	W
Bit Rate	BR		212.5	Gbps
Fiber Length on OM3 MMF			70	m
Fiber Length on OM4 MMF			100	m

Transmitter Optical Interface

Parameter	Symbol	Min	Typical	Max	Unit
Data rate per lane	DR		26.5625		Gbd
Modulation format		PAM4
Center Wavelength	λ	840	850	868	nm
RMS spectral width	σ			0.65	nm
Average Launch power, each lane	Pavg	-6.5		4	dBm
Optical Power OMA, each Lane	PoMA	-4.5		3	dBm
Launch power in OMA outer minus TDECQ		-5.9			dBm
Transmitter and dispersion eye closure (TDECQ), each lane	TDECQ			4.5	dB
Extinction ratio	ER	3			dB
Optical Return Loss Tolerance	ORLT			12	dB
Optical Power for TX DISABLE				-30	dBm
Encircled fluxb1		≥86%at 19 um ≤30%at 4.5 um

Notes:

1.Measured into type A1a.2 or type A1a.3, or A1a.4,50 um fiber, in accordance with IEC 61280-1-4

Receiver Optical Interface

Parameter		Symbol	Min	Typical	Max	Unit
Data rate per lane		BR		26.5625		Gbd
Modulation format			PAM4
Damage threshold			5			dBm
Average receive power, each lane			-8.4		4	dBm
Receiver reflectance		Rr			-12	dB
Receiver sensitivity, each lane1			RS=max (-6.5, SECQ-7.9)			dBm
Stressed receiver sensitivity, each ane					-3.4	dBm
Rx LOS	Assert		-30			dBm
	De-assert				-9	dBm
	Hysteresis		0.5			dB

Notes:

1.Receiver sensitivity is informative and is defined for a transmitter with a value of SECQ. Measured with conformance test signal at TP3 for BER = 2.4E-4 Pre-FEC.

High speed Electrical Specifications

Parameters	Min	Typical	Max	Unit
Supply voltage	3.135		3.465	V
Supply Current			1.59	A
Input differential impedance	90	100	110	Ω
Differential pk-pk input Voltage Tolerance	900			mVpp
Differential data output swing			900	mVpp
Bit Error Rate Pre-FEC			2.4E-4
Input Logic Level High	2		Vcc	V
Input Logic Level Low	0		0.8	V
Output Logic Level High	Vcc-0.5		Vcc	V
Output Logic Level Low	0		0.4	V

PIN Definitions

QSFP56 pin-out as being defined by QSFP MSA，PIN Descriptions are as follows:

200G QSFP56 SR4

Package dimensions

shows the package dimensions of the module. Package dimensions are specified in QSFP MSA.

200G QSFP56 SR4

Ordering Information

Part Number

Temperature Range

Distance

Fiber Type

E/O

O/E

RQ56-200G-SR4

0 to 70℃

100m

MMF

VCSEL

850nm

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