Ascent Communication Technology

400G QSFP DD AOC Breakout Cable

Ascent's 400G QSFP-DD to 2x200G QSFP56 breakout Active Optical Cable operates over Multi-Mode Fiber (MMF). It is designed for short-range data communication and interconnect applications.

• IEEE 802.3cd, IEEE 802.3bs Annex120E

• OIF-CEI-04.0

• QSFP-DD MSA, QSFP-DD-CMIS-Rev4.0

• SFF-8024 Rev. 4.6, SFF-8679 Rev1.8, SFF-8665 Rev1.9

• Up to 53.125Gbps Data Rate Per Channel by PAM4 Modulation

• Enable 400G Breakout 2x200G Application

• Support 400GAUI-8 Electrical Interface

• Integrated 850nm VCSEL Array and PD Array

• Power Dissipation:<5W (200G End) , <11W (400G End)

• Hot Pluggable QSFP-DD and QSFP56 Form Factor

• Maximum Link Length: Up to 30m

• Operating Case Temperature Range: 0 to +70°C

• EEPROM in Cable Assembly

• Pre-FEC Max. BER 2.4E-4

• Support RS-FEC

• Single 3.3V Power Supply

• DDM Function Implemented

Absolute Maximum Ratings

Parameter	Symbol	Min.	Max.	Unit
Storage Temperature Range	T_S	-20	85	°C
Supply Voltage	V_CC	-0.5	4.0	V
Operating Relative Humidity	RH	0	85	%

Recommended Operating Conditions

Parameter	Symbol	Min	Typ	Max.	Unit
Operating Case Temperature	T_OPR	0		70	°C
Power Supply Voltage	V_CC	3.135	3.3	3.465	V
Bit Rate (per Channel)	BR		26.5625		GBd
Humidity	RH	5		85	%
Fiber Bend Radius	FBR	3			cm

Electrical Specifications

Parameter	Symbol	Unit	Min.	Typ.	Max.	Note
Supply Voltage	V_CC V_CC3.3Tx V_CC3.3-Rx	V	3.135	3.3	3.465
Power Consumption (QSFP-DD)	Pc	W		11		Per-end
Power Consumption (QSFP56)	Pc	W		5		Per-end
Transceiver Power-On Initialize Time		ms			2000
Transmitter
Differential Peak-to-Peak Input Voltage Tolerance		mV	900
Differential Termination Mismatch					10%
Differential Input Return Loss (SDD11)		dB			See CEI-56G-VSR
Common-Mode to Differential Conversion and Differential to Common-Mode Conversion (SCD11, SDC11)		dB			See CEI-56G-VSR
Receiver
Differential Peak-to-Peak Output Voltage		mV			900
DC Common Mode Voltage	Vcm	mV	-350		2850
AC Common Mode Noise, RMS		mV			17.5
Differential Termination Mismatch		%			10
Differential Output Return Loss (SDD22)		dB			See CEI-56G-VSR
Common-mode to Differential Conversion and Differential to Common-mode Conversion (SCD22, SDC22)		dB			See CEI-56G-VSR
IIC Communication
IIC Clock Frequency (QSFP-DD)		kHz		400	1000
IIC Clock Frequency (QSFP56)		kHz		100	1000
Clock Stretching		µs			500