QSFP28 100Gb/s to 2 QSFP28 50G Direct Attached Cable

PRODUCT FEATURES

•Compatible with IEEE 802.3bj, SFF-8432 and SFF-8665 •In accordance with the paging function in the protocol SFF-8636, paging can be selected 00H or 02H in 127 bytes •Supports aggregate data rates of 100Gbps •Optimized construction to minimize insertion loss and cross talk •Backward compatible with existing QSFP+ connectors and cages •Straight and break out assembly configurations available •Customized cable braid termination limits EMI radiation •Customizable EEPROM mapping for cable signature •RoHS compliant

APPLICATIONS

•Switches, servers and routers •Data Center networks •Storage area networks •High performance computing •Telecommunication and wireless infrastructure •Medical diagnostics and networking

PRODUCT DESCRIPTION

Intcera’s QSFP28 passive copper cable assembly feature eight differential copper pairs, providing four data transmission channels at speeds up to 25Gbps per channel, and meets 100G Ethernet and InfiniBand EDR requirements. Available in a broad rang of wire gages-from 26AWG through 30AWG-this 100G copper cable assembly features low insertion loss and low cross talk. Designed for applications in the data center, networking and telecommunications markets that require a high speed, reliable cable assembly, this next generation product shares the same mating interface with QSFP+ form factor, making it backward compatible with existing QSFP ports.

Ordering Information

Part Number	Description
QP1H2X-DP1M30WG	100G QSFP28 to 2 QSFP28 50G DAC passive cable 30AWG 1m
QP1H2X-DP2M30WG	100G QSFP28 to 2 QSFP28 50G DAC passive cable 30AWG 2m
QP1H2X-DP3M30WG	100G QSFP28 to 2 QSFP28 50G DAC passive cable 30AWG 3m
QP1H2X-DP4M26WG	100G QSFP28 to 2 QSFP28 50G DAC passive cable 26AWG 4m
QP1H2X-DP5M26WG	100G QSFP28 to 2 QSFP28 50G DAC passive cable 26AWG 5m

 

High Speed Characteristics

Parameter	Symbol	Min	Typical	Max	Unit	Note
Differential Impedance	TDR	90	100	110	Ώ
Insertion loss	SDD21	-16.06		-8	dB	At 13.28 GHz
Differential Return Loss	SDD11 SDD22	-12.45		See 1	dB	At 0.05 to 4.1 GHz
		-3.12		See 2	dB	At 4.1 to 19 GHz
Common-mode to common-mode output return loss	SCC11 SCC22			-2	dB	At 0.2 to 19 GHz
Differential to common-mode return loss	SCD11 SCD22	-12		See 3	dB	At 0.01 to 12.89 GHz
		-10.58		See 4		At 12.89 to 19 GHz
Differential to common Mode Conversion Loss	SCD21-IL			-10	dB	At 0.01 to 12.89 GHz
				See 5		At 12.89 to 15.7 GHz
				-6.3		At 15.7 to 19 GHz
Channel Operating Margin	COM			-3	dB
Notes: Reflection Coefficient given by equation SDD11(dB) < -16.5 + 2 × SQRT(f ), with f in GHz Reflection Coefficient given by equation SDD11(dB) < -10.66 + 14 × log10(f/5.5), with f in GHz Reflection Coefficient given by equation SCD11(dB) < -22 + (20/25.78)*f, with f in GHz Reflection Coefficient given by equation SCD11(dB) < -15 + (6/25.78)*f, with f in GHz Reflection Coefficient given by equation SCD21(dB) < -27 + (29/22)*f, with f in GHz

Pin Descriptions

Pin	Logic	Symbol	Description
1		GND	Ground
2	CML-I	Tx2n	Transmitter Inverted Data Input
3	CML-I	Tx2p	Transmitter Non-Inverted Data Input
4		GND	Ground
5	CML-I	Tx4n	Transmitter Inverted Data Input
6	CML-I	Tx4p	Transmitter Non-Inverted Data Input
7		GND	Ground
8	LVTTL-I	ModSelL	Module Select
9	LVTTL-I	ResetL	Module Reset
10		Vcc Rx	+3.3V Power Supply Receiver
11	LVCMOS- I/O	SCL	2-wire serial interface clock
12	LVCMOS- I/O	SDA	2-wire serial interface data
13		GND	Ground
14	CML-O	Rx3p	Receiver Non-Inverted Data Output
15	CML-O	Rx3n	Receiver Inverted Data Output
16		GND	Ground
17	CML-O	Rx1p	Receiver Non-Inverted Data Output
18	CML-O	Rx1n	Receiver Inverted Data Output
19		GND	Ground
20		GND	Ground
21	CML-O	Rx2n	Receiver Inverted Data Output
22	CML-O	Rx2p	Receiver Non-Inverted Data Output
23		GND	Ground
24	CML-O	Rx4n	Receiver Inverted Data Output
25	CML-O	Rx4p	Receiver Non-Inverted Data Output
26		GND	Ground
27	LVTTL-O	ModPrsL	Module Present
28	LVTTL-O	IntL	Interrupt
29		Vcc Tx	+3.3V Power supply transmitter
30		Vcc1	+3.3V Power supply
31	LVTTL-I	LPMode	Low Power Mode
32		GND	Ground
33	CML-I	Tx3p	Transmitter Non-Inverted Data Input
34	CML-I	Tx3n	Transmitter Inverted Data Input
35		GND	Ground
36	CML-I	Tx1p	Transmitter Non-Inverted Data Input
37	CML-I	Tx1n	Transmitter Inverted Data Input
38		GND	Ground

Mechanical Specifications

 Regulatory Compliance

Item	Test Method	Performance
Electrostatic Discharge (ESD) to the Electrical Pins	MIL-STD-883C Method 3015.7	Class 1(>2000 Volts)
Electromagnetic Interference (EMI)	FCC Class B	Compliant with Standards
	CENELEC EN55022 Class B
	CISPR22 ITE Class B
RF Immunity (RFI)	IEC61000-4-3	Typically Show no Measurable Effect from a 10V/m Field Swept from 80 to 1000MHz
RoHS Compliance	RoHS Directive 2011/65/EU and it's Amendment Directives 6/6	RoHS 6/6 compliant

 Appendix A. Document Revision

Version No.	Date	Description
1.0	2020-3-5	Preliminary datasheet