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400G QSFP-DD DR4 SM MPO12 Optical Transceiver

Features

QSFP-DD Serial Optical Interface

8x50G PAM4 retimed 400GAUI-8 electrical interface
MPO-12 connector with 8° angled end-face
Up to 500m on SMF with FEC

QSFP-DD MSA Compliant

Hot Pluggable QSFP-DD form factor
Compliant with CMIS5.2

Support Protocol

IEE802.3.bs 400GBASE-DR4 Specification compliant

Low Power Consumption

Less than 10.5W in temperature range of 0 to 70℃

Applications

400Gb/s Ethernet
Data Center
InfiniBand interconnects

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400G OSFP DR4 Specification

400G, QSFP-DD, MPO12 APC,1310nm SMF, up to 500m.

400G QSFP-DD DR4

Functional Block Diagram

400G QSFP-DD DR4

General Description

RQDD-400G-DR4 is a Silicon Photonics 400G (4x100G) DR4 transceiver. RQDD-400G-DR4 is a fully integrated, 425 Gb/s optical transceiver for SMF links up to 500m. RQDD-400G-DR4 transmits data in compliance with the optical interface specification IEEE Std802.3-2018 Section 8 400GBASE-DR4. 400GBASE-DR4 specifies the use of 4-level pulse amplitude modulation (PAM4) at 53.125 Gbaud operating at four parallel channels with wavelength on the range of 1304.5-1317.5nm. The bit rate per lane is106.25 Gb/s, which produces an aggregate data rate of 425 Gb/s by means PSM to the transmit ports of the MPO-12 connector. The received optical lanes are paralleled from the receive MPO-12 connector ports to PIN-PD built in PIC (Photonic Integrated Circuit) to recover the PAM4 for interfacing with the electrical interface via with transimpedance amplifier (TIA) surfaced-mounted to PIC.

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Storage Temperature	Ts	-40	85	°C
Case Operating Temperature	Top	0	70
Storage Relative Humidity (non-condensation)	RH	-	85	%
Supply Voltage	Vcc	0	3.6	V
Receiver Damage Threshold, per Lane	PRdmg		5.0	dBm

Recommended Operating Conditions

Parameter	Symbol	Min	Max	Unit
Operating Case Temperature	TC	0	70	°C
Relative Humidity (non- condensation)	RH	5	85	%
Power Supply Voltage	Vcc	-3.135	3.465	V
Supply Current	Icc		3182	mA
Total Power Consumption	PC		10.5	W
Bit Rate	BR		425	Gbps

Transmitter Optical Interface

Parameter	Accuracy	Unit
Internally Measured Transceiver Temperature	+/-3	℃
Internally Measured Transceiver Supply Voltage	+/-3	%
Measured Tx Bias Current	+/-10	%
Measured Tx Output Power	+/-3	dB
Measured Rx Received Average Optical Power	+/-3	dB

Receiver Optical Interface

Parameter		Symbol	Min	Typical	Max	Unit
Data rate per lane		BR		53.125		GBd
Modulation format			PAM4
Center Wavelength		λ	1304.5	1311.0	1317.5	nm
Damage threshold		THD	5			dBm
Average receive power, each lane			-5.9		4.0	dBm
Average receive power, each lane			-5.9		4.0	dBm
Receiver reflectance		Rr			-26	dB
Receiver sensitivity, each lane1		SEN	Max(-3.9, SECQ-5.3)			dBm
Stressed receiver sensitivity, each lane		SRS			-1.9	dBm
Rx LOS	LOS Assert		-15		-7.9	dBm
	LOS De-assert				-7.5	dBm
	LOS Hysteresis		0.5			dB

Note:

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.

Module input characteristics

Parameter	Min	Typical	Max	Unit
Supply Voltage	3.135		3.465	V
Input Differential Impedance	90	100	110	Ω
Differential data input swing			880	mVpp
Differential data output swing			900	mVpp
Bit Error Rate			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

Digital Diagnostic Monitor Accuracy

The following characteristics are defined over recommended operating conditions.

Parameter	Accuracy	Unit
Internally Measured Transceiver Temperature	+/-3	℃
Internally Measured Transceiver Supply Voltage	+/-3	%
Measured Tx Bias Current	+/-10	%
Measured Tx Output Power	+/-3	dB
Measured Rx Received Average Optical Power	+/-3	dB

Package dimensions

400G QSFP-DD DR4

Ordering Information

Part Number	Temperature Range	Distance	Fiber Type	E/O	O/E
RQDD-400G-DR4	0 to 70℃	500m	SMF	Siph DFB	Siph PIN

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