Ascent Communication Technology

200G QSFP56 InfiniBand HDR AOC

The 200G QSFP56 InfiniBand HDR Active Optical Cable (AOC) is an advanced high-speed optical interconnect designed to meet the growing demands of high-performance computing and data centers. It supports 212.5Gb/s aggregate bit rate, enabling efficient data transmission over long distances with minimal power dissipation. Built for reliability, this AOC uses 4x50G PAM4 VCSEL/PIN photo detector technology for fast and precise signal transmission. It supports the SFF-8636 management interface and SFF-8679 electrical specifications, ensuring compliance with IEEE 802.3cd standards. These features make it a versatile solution for 200G Ethernet and InfiniBand HDR applications. Optimized for data centers, HPC clusters, and large-scale networks, this AOC cable ensures low-latency, high-speed interconnects. It meets environmental safety standards while providing scalable, future-proof networking solutions for next-generation high-speed networks.

· Hot Pluggable QSFP Cable End

· Supports up to 212.5Gb/s aggregate bandwidth

· Low Power Consumption, Typ. 5.0W Each End

· 4x50G PAM4 VCSEL Transmitter & PIN Photodetector Receiver

· Operating Case Temperature: 0°C to 70°C

· SFF-8636 Management Interface

· SFF-8679: General Electrical Compliance

· IEEE 802.3cd: Physical Layer Specifications and Management Parameters

· ROHS-6: Environment Safety Compliance

General Product Characteristics

Parameter	Value	Unit	Note
Module Form Factor	QSFP	As defined by SFF-8661	Module Form Factor
		As defined by SFF-8661
Number of Lanes	4 TX and 4 RX
Maximum Aggregate Data Rate	212.5	Gb/s
Standard Cable Lengths	1, 2, 3, 5, 7, 10, 15, 20	meters	Other lengths may be available upon request
			Other lengths may be available upon request
Protocols Supported	Ethernet
Electrical Interface and Pin-out	38-pin edge connector		Pin-out as defined by SFF- 8679
Typical Power Consumption per End	5	Watts	Varies with output voltage swing and pre-emphasis settings
			Varies with output voltage swing and pre-emphasis settings
Management Interface	Serial, I2C-based, 400 kHz maximum frequency		As defined by SFF-8636
	Serial, I2C-based, 400 kHz maximum frequency

The force specification for AOC is in the list below:

Parameter	Min	Max	Unit	Note
QSFP Module Insertion		40	Newton
QSFP Module Extraction		30	Newton
QSFP Module Retention	90		Newton
Insertion and Removal Cycles	50		Cycle
Cable Outer Diameter	2.9	3.0	mm

Absolute Maximum Ratings
Exceeding the limits below may damage the active optical cable permanently.

Parameter	Symbol	Min	Typ.	Max	Unit	Note
Maximum Supply Voltage	V_cc	-0.5		3.6	V
Storage Temperature	T_sto	-40		85	°C
Case Operating Temperature	T_op	0		70	°C
Relative Humidity	RH	0		85	%	No-condensing

Note: 1. Per terminal.

Electrical Characteristics

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Supply Voltage	Vcc	3.14		3.46	V
Power Consumption	PCon		5		W
Bit Rate	BR		26.5625		GBd	1
Bit Error Ratio	BER	10				2
Center wavelength	λc	840		860	nm	3
Number of Lanes		4
Management Interface	-	Serial, I2C-based, maximum frequency 400 kHz				4
Logic Input Voltage High	Vih	2		Vcc+0.3	V
Logic Input Voltage Low	Vil	-0.3		0.8	V

Note:
        1.       Single lane
        2.       PRBS13Q test pattern is used.
        3.       As defined by IEEE Std. 802.3cd^TM/D2.1
      4.       As defined by SFF-8636

Electrical Specifications

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Transceiver Power Supply Current	Icc		3100		mA
Transceiver Power on Initialization Time	Tinit			2000	ms
Transceiver Power on Initialization Time
Transmitter at TP1a
AC Common-Mode Output Voltage (RMS)				17.5	mV
AC Common-Mode Output Voltage (RMS)
Differential Peak-to-Peak Output Voltage (Transmitter Disabled)				35	mV

Differential Peak-to-Peak Output Voltage (Transmitter Enabled)				880	mV

Eye symmetry Mask Width	ESMW	0.22			UI
Eye Height, Differential	EH	32			mV
Differential Output Return Loss		See Eq. 1
Common to Differential Mode Conversion Return Loss		See Eq. 2
Common to Differential Mode Conversion Return Loss
Differential Termination Mismatch		10			%
Differential Termination Mismatch
Transition Time (20% to 80%)	Tr, Tf	10			ps
Receiver at TP4
AC Common-Mode Output Voltage (RMS)				17.5	mV
AC Common-Mode Output Voltage (RMS)
Differential Peak-to-Peak Output Voltage				900	mV
Differential Peak-to-Peak Output Voltage
Near-End ESMW		0.265			UI
Near-End Eye Height, Differential		70			mV
Far-End ESMW		0.2			UI
Far-End Eye Height, Differential		30			mV
Far-End Pre-Cursor ISI Ratio		-4.5		2.5	%
Differential Output Return Loss		See Eq. 1
Common to Differential Mode Conversion Return Loss		See Eq. 2
Common to Differential Mode Conversion Return Loss
Differential Termination Mismatch		10			%
Differential Termination Mismatch
Transition Time (20% to 80%)	Tr, Tf	10			ps
DC Common Mode Voltage		-350		2850	mV