Ascent Communication Technology

400G QSFP DD AOC Cable

The 400G QSFP-DD Active Optical Cable (AOC) is a high-performance interconnect solution designed for high-speed data transmission over longer distances in modern data centers and enterprise networks. Featuring QSFP-DD connectors on both ends, it supports data rates of 400 Gbps through eight 50 Gbps lanes, making it ideal for applications such as cloud computing, artificial intelligence, and high-bandwidth networking. Unlike passive cables, this AOC integrates active optical components to enhance signal integrity and extend transmission distances beyond the limitations of copper cables, reaching up to 50m. Its lightweight, low-power design minimizes electromagnetic interference (EMI) while delivering superior reliability and efficiency in dense networking environments. Compliant with QSFP-DD MSA and IEEE 802.3cd standards, the 400G QSFP-DD AOC offers a plug-and-play solution for seamless deployment. It combines flexibility, scalability, and performance, making it an excellent choice for organizations looking to optimize their high-speed networking infrastructure.

· Up to 53.125Gbps data rate per channel by PAM4 modulation

· Support 400GAUI-8 electrical interface

· Integrated 850nm VCSEL array and PD array

· DDM function implemented

· Hot-pluggable QSFP-DD form factor

· Single +3.3V power supply

· Compliant with ROHS2.0

Absolute Maximum Ratings

Product

Modulation

Nominal Rate

Specifications

Link distance over OM3

Link distance over OM4

Aggrega

te(Gbps)

Electrica

l Lanes(Gb

aud)

High Speed

Electrical

Pre-FEC

Max BER

400G-

AOC

PAM4

425

26.5625

400GAUI-8

2.4E-4

70M

100M

Parameter	Symbol	Unit	Min	Max
Case Operating Temperature	Top	℃	0	+70
Storage Temperature Range	Ts	℃	-40	+85
Relative Humidity	RH	%	0	85
Power Supply Voltage	Vcc	V	-0.5	+3.6

Recommended Operating Conditions

Parameter	Symbol	Unit	Min	Typ	Max
Operating Case Temperature Range	Tca	oC	0	/	70
Power Supply Voltage	Vcc	V	3.135	3.3	3.465
Bit Rate(Per channel)	BR	GBd		26.5625

Electrical Characteristics

Parameter	Symbol	Unit	Min	Typ	Max	Notes
Supply Voltage	VCC	V	3.135	3.3	3.465
Power Consumption	Pc	W			8	Per end
Transmitter
Input Differential Impedance	RIN	Ω	80	100	120
Single Ended Data Input Swing	VIN	mVp-p	90		500
Transmit Disable Voltage	VDIS	V	2		VCCHOST
Transmit Enable Voltage	VEN	V	VEE		VEE+0.8
Transmit Fault Assert Voltage	VFA	V	2		VCCHOST
Transmit Fault De-Assert Voltage	VFDA	V	VEE		VEE+0.8
Receiver
Single Ended Data Output Swing	VOD	mVp-p	200		500
LOS Fault	VLOSFT	V	2		VCCHOST
LOS Normal	VLOSNR	V	VEE		VEE+0.8
Differential termination mismatch		%			10
IIC communication
IIC Clock frequency	-	KHZ	/	100	400
Clock stretching	-	us	/	/	500