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800G OSFP to 4x200G Breakout ACC

Ascent’s OSFP to 4x200G breakout ACC is an 800Gb/s twin-port OSFP (Octal Small Form-factor Pluggable) to 2x400Gb/s OSFP passive Active Copper Cable (ACC) dual breakout cable. The ACC uses 8-channels of 100G-PAM4 modulation and has lengths of 4 and 5 meters. The 8-channel, twin-port, OSFP end uses a finned top form-factor for use in Quantum-2 and Spectrum-4 switch cages. The four 200G ends support 2-channels of 100G-PAM4 (400G) use a flat top OSFP using riding heat sinks on the connector cage. For use in liquid-cooled systems, a twin-port OSFP version is available with a flat top (designated -FLT in the part number). ACC cables are low-latency, low-power consuming, high-speed links next to passive DACs due to their simplicity of design and minimal components. The “active” term refers to the passive copper cable with an equalizer integrated circuit to extend the length to 4 and 5-meters while maintaining low-latency and low-power at 1.5 Watts and 0.6 Watts. Each end includes an EEPROM which provides product identification and characteristics to the host system. Ascent 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.

Max.

Units

Note

Supply Voltage

Vcc

-0.3

3.3

3.6

V

Storage temperature

Ts

-40


85

°C

Operating Case temperature

Tc

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

Hair Tail Technology Net, Gray

Electrical Characteristics

Parameter

Symbol

Min.

Typ.

Max.

Unit

Power supply voltage

VCC

3.1

3.3

3.5

V

Input Amplitude


800


1200

mVpp

Input LOW Voltage

VIL

-0.3


0.35*Vcc

V

Input HIGH Voltage

VIH

0.65* Vcc


Vcc +0.3

V

Output Logic LOW

VOL



0.25*Vcc

V

I2C Master Mode Output Frequency



400


kHz

800G end Power consumption



1.2

1.5

W

400G end Power consumption



0.3

0.4

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

image.png

For 0.05  =f  =40 GHz, Where f is the frequency in GHz

V

Differential to common-mode conversion loss

SCD21-SDD21

image.png

For 0.05  =f  =40 GHz, Where f is the frequency in GHz

V

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

Minimum COM

COM

3



dB

Minimum cable assembly ERL

ERL

8.25



dB

BER




2.4x10-4


 


image.png

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