Ascent Communication Technology

OSFP 800G ACC Cable

Ascent OSFP-800G-ACC is a 800Gb/s twin-port OSFP (Octal Small Formfactor Pluggable)-to-2x400Gb/s twin-port OSFP Active Copper Cable (ACC) for InfiniBand NDR networking. ACC cables are the low-cost, low-latency, low-power consuming, high-speed links available due to their simplicity of design and minimal components. The “active” reference term in this cable refers to the passive copper cable with an equalizer integrated circuit to extend the length to 3, 4, and 5 meters while maintaining low-latency and low-power at 1.5 Watts per end. Thin 30AWG is used for 4m lengths and thicker 25AWG for 5m. Each end includes an EEPROM which provides product identification and characteristics to the host system. Every cable length is tuned to reduce signal noise and back reflections. The ACC firmware supports both InfiniBand and Ethernet and is automatically enabled depending on the protocol of the switch attached to. Ascent’s cable solutions provide power-efficient connectivity enabling higher port bandwidth, density and configurability at a low cost and reduced power requirement in the data centers. Rigorous cable production testing ensures best out-of-the-box installation experience, performance, and durability.

· Module compliant to OSFP MSA

· InfiniBand NDR compatible

· Transmission data rate up to PAM4 106.25Gbps per channel

· Low power consumption

· Linear PAM4 programmable equalizer optimized for 56GBaud copper link up to max length 5M on 25AWG

· Enable Auto-Negotiation and Link Training

· Low latency<10ps

· Supports device programming by MCU with I2C

· Power supply 3.3V

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

· RoHS2.0 compliant

Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max	Unit
Supply Voltage	V_cc	-0.3	3.3	3.6	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		5	M
AWG		32		25	AWG
Jacket Material		HAIRTAIL+ Technology Net, Red

Electrical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit
Power supply voltage	V_CC	3.1	3.3	3.5	V
Input Amplitude		800		1200	mVpp
Input LOW Voltage	V_IL	-0.3		0.35*V_CC	V
Input HIGH Voltage	V_IH	0.65* V_CC		V_CC +0.3	V
Output Logic LOW	V_OL			0.25*V_CC	V
I2C Master Mode Output Frequency			400		kHz
800G end Power Consumption			1.2	1.5	W

High-Speed Specifications

Parameter	Symbol	Min.	Typ.	Max.	Unit
Raw Cable Impedance	Zca	90	100	110	ohm
Mated Connector Impedance	Zmated	85		115	ohm
Maximum Insertion Loss at 26.56 GHz	SDD21	11		19.75	dB
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 Return Loss

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

Common-mode to Common-Mode Return Loss	SCC11/22	RLCC)≥18 For 0.05 =f =40 GHz, Where f is the frequency in GH			kHz
Common-mode to Common-Mode Return Loss

Minimum COM	COM	3			dB
Minimum Cable Assembly ERL	ERL	8.25			dB
BER				2.4x10^-4