FeaturesOSFP Serial Optical Interface 8x100G PAM4 retimed 800GAUI-8 electrical interface Dual MPO-12 APC connector and MPO16 APC connector are provided 8 channel VCSEL arrays and 8 channels PIN photo detector arrays Maximum link length of 60m on OM3 or 100m on OM4 OSFP MSA CompliantHot Pluggable OSFP form factor Compliant to OSFP Module Specification Rev 5.0 Compliant with CMIS 5.2 Support Protocol Compliant with IEEE 802.3db Compliant to IEEE 802.3ck Low Power Consumption L......

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800G OSFP SR8 Specification

NVIDIA twin port transceiver
800G,2xNDR, OSFP, 2xMPO12 APC, 850nm MMF, up to 50m, finned

Functional Blcok Diagram

800G OSFP SR8

General Description

OSFP 800G SR8 an Eight-Channel, Parallel, Pluggable, Fiber-Optic OSFP for 800Gigabit Ethernet applications. This transceiver is a high performance module for short-range data communication and interconnect application. It integrates eight data lanes in each direction with 8x53.125GBd. The length of OSFPSR8is up to 60 meters over OM3 MMF or 100 meters over OM4 MMF. This module is designed to operate over multimode fiber systems using a nominal wavelength of 850nm.

Absolute Maximum Ratings and Recommended Operating Conditions

（ Absolute Maximum Ratings）

Parameter	Symbol	Min	Max	Unit
Storage Temperature	Ts	-40	85	°C
Case Operating Temperature	Top	0	70	°C
Relative Humidity (non-condensation)	RH	15	85	%
Supply Voltage	Vcc	-0.5	3.6	V
Receiver Damage Threshold, per Lane	PRdmg	5		dBm

（Recommended Operating Conditions）

Parameter	Symbol	Min	Max	Unit
Operating Case Temperature	Top	0	70	°C
Relative Humidity (non-condensing)	RH	15	85	%
Power Supply Voltage	Vcc	3.135	3.465	V
Total Power Consumption	Pc	-	14	W
Supply Current per end			4.465	A
Bit Rate	BR		850	Gbps
Fiber Length on OM3 MMF			60	m
Fiber Length on OM4 MMF			100	m
I2C Clock Frequency	0		400	kHz

Notes:

1.Under condition of 3.465V operating supply voltage, and 70℃case temperature

Optical Specification

Optical Transmitter

（Transmitter Optical Interface）

Parameter		Symbol	Min	Typical	Max	Unit
Data rate per lane		DR		53.125		GBd
Modulation format			PAM4
Center Wavelength¹		λ	840	860	868	nm
RMS spectral width		σ			0.6	nm
Average Launch power, each lane		Pavg	-4.6		4	dBm
Optical Power OMA, each Lane，max		POMA	3.5			dBm
OMAouter, each lane min	max (TECQ, TDECQ) <1.8 dB		max [-2.6 , max(TECQ,TECQ) –4.4]			dBm
OMAouter, each lane min	1.8 < max (TECQ, TDECQ) < 4.4 dB		max [-2.6 , max(TECQ,TECQ) –4.4]			dBm
Transmitter and dispersion eye closure (TDECQ), each lane		TDECQ			4.4	dB
Transmitter eye closure for PAM4 (TECQ), each lane		TECQ			4.4	dB
Extinction ratio		ER	2.5			dB
Transmitter power excursion, each lane					2.3	dBm
Optical Return Loss Tolerance		ORLT			14	dB
Optical Power for TX DISABLE						dBm
Encircled fluxb2			≥86% at 19 um ≤30% at 4.5 um
Encircled fluxb2			≥86% at 19 um ≤30% at 4.5 um

Optical Receiver

(Receiver Optical Interface)

Parameter		Symbol	Min	Typical	Max	Unit
Data rate per lane		BR		53.125		Gbd
Modulation format			PAM4
Center Wavelength1		λ	842	885	948	nm
Damage threshold			5			dBm
Average receive power, each lane			-6.4		4	dBm
Receive power, each lane (OMA outer)						dBm
Receiver reflectance		Rr				dB
Receiver sensitivity, each lane1			RS = max (-4.6, TECQ –6.4)			dBm
Stressed receiver sensitivity, each lane					-2	dBm
Rx LOS	Assert		-15			dBm
	De-assert				-7.5	dBm
	Hysteresis		0.5		5	dB

Notes:

1. Receiver sensitivity is informative and is defined for a transmitter with a value of TECQ.Measured with conformance test signal at TP3for BER = 2.4E-4 Pre-FEC.

Electrical Specification

Parameter	Min	Typical	Max	Unit
Pre FEC Bit Error Ratio			2.4E-4
Post FEC Bit Error Ratio			1E-12
Transmitter (each Lane)
Differential pk-pk Input Voltage tolerance	750			mV
Differential Termination Mismatch			10	%
Eye height	10			mV
Common-mode to differential-mode return loss	IEEE802.3ck Equation (120G–1)			dB
Vertical eye closure			12	dB
Effective return loss	7.3			dB
Transition Time	10			ps
Receiver (each Lane)
Differential data output swing	300		900	mVpp
Differential termination mismatch			10	%
Eye height	15			mV
Vertical eye closure			12	dB
Common-mode to differential-mode return loss	IEEE802.3ck Equation (120G–1)
Effective return loss	8.5			dB
Transition time	8.5			ps