100G QSFP28 InfiniBand EDR Active Optical Cable - NADDOD Blog

100G QSFP28 InfiniBand EDR Active Optical Cable

NADDOD Abel InfiniBand Expert Feb 1, 2023

Features

  • Up to 100Gb/s data rate
  • 4x 25G NRZ
  • 2.2W power dissipation (typ, each end, with retiming)
  • Programmable Rx output amplitude and pre-emphasis
  • Programmable Tx input equalizer
  • Selectable retiming
  • SFF-8665 compliant QSFP28 port
  • Single 3.3V power supply
  • BER 1E-15 with InfiniBand systems
  • Up to 100m length
  • Hot pluggable
  • RoHS compliant
  • SFF-8636 compliant I2C management interface

Description

QSFP-100G-AOCH cables are QSFP28 VCSEL-based (Vertical Cavity Surface-Emitting Laser) active optical cables designed for use in InfiniBand 100Gb/s EDR systems. 100G EDR AOCs are the most popular interconnect used in very high-speed InfiniBand High Performance Computing (HPC) environments as they offer predictable latency, very low power (2.2W) and enable increased air flow, tighter bend radii and significantly longer reach compared to DAC cables. Since the AOC is hot pluggable, it is easy to install and replace.

The active optical cables have a standard SFF-8665 compliant QSFP28 port on the electrical side towards the host system. It contains four multi-mode fibers (MMF) optic transceivers per end, each operating at data rates of up to 26Gb/s.

The QSFP-100G-AOCH offers selectable retiming per lane for both its optical transmitters and receivers for the 25-26Gbp/s rates, but the AOC also supports lower bit rates without retiming. The transmitters have programmable input equalizers and input squelch function, while the receivers have programmable output amplitude and pre-emphasis.

The unique, quality, active, fiber, cable solutions provide power-efficient connectivity for data center interconnects. They enable higher port bandwidth, density and configurability at a low cost and reduced power requirement in the data centers. Rigorous production testing ensures the best out-of- the-box installation experience, performance and durability.

Absolute Maximum Ratings

Parameter Min. Max. Units
Supply voltage -0.3 3.6 V
Data input voltage -0.3 3.465 V
Control input voltage -0.3 4.0 V
Damage threshold 3.4 dBm

Operational Specifications

Parameter Min. Typical Max. Units
Supply voltage (Vcc) 3.135 3.3 3.465 V
Power dissipation (each end, no retiming) 1.5 1.8 W
Power dissipation (each end, retiming on all lanes) 2.2 2.5 W
Supply noise tolerance (10Hz-10MHz) 66 mVpp
Operating case temperature 0 70 °C
Operating relative humidity 5 85 %

Mechanical Schematics

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Part Numbers and Descriptions

Part Number Description
QSFP-100G-A1H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 1m
QSFP-100G-A1-5H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 1.5m
QSFP-100G-A2H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 2m
QSFP-100G-A3H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 3m
QSFP-100G-A4H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 4m
QSFP-100G-A5H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 5m
QSFP-100G-A10H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 10m
QSFP-100G-A15H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 15m
QSFP-100G-A20H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 20m
QSFP-100G-A30H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 30m
QSFP-100G-A50H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 50m
QSFP-100G-A100H Active fiber cable, IB EDR, up to 100Gb/s, QSFP, LSZH, 100m

Warnings

Handling Precautions: This device is susceptible to damage as a result of electrostatic discharge (ESD). A static free environment is highly recommended. Follow guidelines according to proper ESD procedures.

Laser Safety: Radiation emitted by laser devices can be dangerous to human eyes. Avoid eye exposure to direct or indirect radiation.

Datasheet: 100G QSFP28 InfiniBand EDR Active Optical Cable