Ascent Communication Technology

OSFP 800G DAC Cable

800G OSFP DAC (Passive Direct Attach Copper) enables high-bandwidth 800G links and supports 800G Ethernet rate. It provides an OSFP copper direct-attach solution. This cable is compliant with OSFP MSA (Multi-Source Agreement), IEEE 802.3ck and 400GBase-CR4 standards. This direct attach copper twinax cable is suitable for short-distance connectivity within a rack or between adjacent racks in data centers. Using the Octal Small Form factor Plug (OSFP) and contains 8 independent full-duplex passive copper cable, each operating at data rates up to 106.25Gb/s, which are suitable for very short links and offer a cost-effective and power-efficient way to establish a 800-Gigabit link between OSFP ports of switches/routers within racks and across adjacent racks. The 800G OSFP DAC assembly is high-speed, cost-effective alternatives to OSFP optical modules in 800G Ethernet applications. It meets OSFP800 MSA, IEE802.3ck, 400GBase-CR4 standards. These high performance 800G OSFP-to-OSFP copper direct-attach cables are offered in lengths of 1, 1.5, and 2 meters.

· OSFP Module compliant to OSFP MSA

· Transmission data rate up to PAM4 106.25Gbps per channel

· Enable 800Gb/s Transmission

· Link length up to 3m

· Built-in EEPROM functions

· Operating case temperature 0°C to +70°C

· RoHS2.0 compliant

Absolute Maximum Ratings

Parameter	Symbol	Min.	Max.	Unit	Note
Supply Voltage	V_cc	3.13	3.3	3.47	V
Storage temperature	T_s	-40		85	°C
Operating Case temperature	T_c	0		70	°C
Humidity	Rh	5		85	%
Data Rate			800		Gbps

Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit
Length	L	0.5		3.0	M
AWG		28		25	AWG
Jacket material	Hair Tail Technology Net, Gray

Electrical Characteristics

Parameter	Symbol	Min.	Typ.	Max.		Unit
Resistance	R_con			3		ohm
Insulation Resistance	R_ins			10		Mohm
Raw cable impedance	Z_ca	95		110		ohm
Mated connector Impedance	Z_mated	85		110		ohm
Maximum insertion Loss at 26.56 GHz	SDD21	11		18	1.5M	dB
				19.75	2.0M
		0.5		25.3	3.0M
Differential to common-mode return loss	SCD11/22	For 0.05 =f =40 GHz, Where f is the frequency in GHz				dB


Differential to common-mode conversion loss	SCD21-SDD21	For 0.05 =f =40 GHz, Where f is the frequency in GHz				dB
Differential to common-mode conversion loss	SCD21-SDD21	For 0.05 =f =40 GHz, Where f is the frequency in GHz
Common-mode to common-mode return loss	SCC11/22	RLCC ≥18 For 0.05 =f =40 GHz, Where f is the frequency in GHz				dB

Minimum COM	COM	3				dB