Ascent Communication Technology

400G OSFP to 4x100G QSFP56 DAC

400G OSFP_4X100G QSFP56 passive copper cable assembly feature sixteen differential copper pairs, providing eight data transmission channels at speeds up to 56Gbps(PAM4) per channel, and meets 4X100G Ethernet and InfiniBand High Data Rate(HDR) requirements. Available in 26AWG and 30AWG wire gauges, this 400G OSFP_4X100G QSFP56 copper cable assembly features low insertion loss and low crosstalk. 400G OSFP_4X100G QSFP56 passive copper cable uses PAM4 signals for transmission, which doubles the rate. However, there are more stringent requirements for cable insertion loss. For detailed requirements, please see High Speed Characteristics.

· Compatible with IEEE 802.3cd

· Supports aggregate data rates of 4X100Gbps(PAM4)

· Optimized construction to minimize insertion loss and crosstalk

· Pull-to-release slide latch design

· Straight and break out assembly configurations available

· Customized cable braid termination limits EMI radiation

· Customizable EEPROM mapping for cable signature

· 26AWG and 30AWG cable

· 3.3V Power supply

· Temperature Range: 0 to 70 °C

· RoHs Compliant

General Product Characteristics

Parameter	Symbol
Number of Lanes	Tx8 & Rx8(400G OSFP) Tx2 & Rx2(4X100G QSFP56)
Channel Data Rate	53.125Gbps
Operating Temperature	0 to + 70°C
Storage Temperature	-40 to + 85°C
Supply Voltage	3.3 V nominal
Electrical Interface	60pins edge connector 38pins edge connector
	60pins edge connector 38pins edge connector
Management Interface	Serial, I2C

High Speed Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	Note
Differential Impedance	TDR	90	100	110	Ώ
Insertion Loss	SDD21	-17.16			dB	At 13.28 GHz
Differential Return Loss	SDD11			See 1	dB	At 0.05 to 4.1 GHz
	SDD22			See 2	dB	At 4.1 to 19 GHz
Common-Mode to Common-Mode Output Return Loss	SCC11 SCC22			-2	dB	At 0.2 to 19 GHz
	SCC11 SCC22			-2	dB	At 0.2 to 19 GHz
Differential to Common-Mode ReturnLoss	SCD11			See 3	dB	At 0.01 to 12.89 GHz
	SCD22			See 4		At 12.89 to 19 GHz
Differential to Common Mode Conversion Loss	SCD21-IL			-10	dB	At 0.01 to 12.89 GHz
				See 5		At 12.89 to 15.7 GHz
				-6.3		At 15.7 to 19 GHz