100G QSFP28/4SFP28 Direct Attach Cable (DAC) Datasheet

    Brand Name:KOLORAPUS

    Sample: Available

    Unit price<=$15 ,free sample and need to pay the freight.

    Unit price >$15,need to pay the double sample fee and freight.

    MOQ: >=$7000

    Origin: China

    Certification:ISO/3C/CE/ROHS/UL

    Package: Carton

    Payment Method:T/T


Product Description

General  Description

QSFP28 passive copper cable assembly feature eight differential copper pairs,providing four data transmission channels at speeds up to 28Gbps per channel,and meets 100G Ethernet,25G Ethernet and InfiniBand Enhanced Data Rate(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.QSFP28 can be used with current 10G and 14G applications with substantial signal integrity margin.

Features  and Benefits

l  Compatible with IEEE 802.3bj,IEEE 802.3by and InfiniBand EDR

l   Supports aggregate data rates of 100Gbps

l   Optimized construction to minimize insertion loss and cross talk

l   Backward compatible with existing QSFP+ connectors and cages

l   Pull-to-release slide latch design

l   26AWG through 30AWG cable

l   Straight and break out assembly configurations available

l     Customized cable braid termination limits EMI radiation  

l     Customizable EEPROM mapping for cable signature

l     RoHS compliant

Product   Applications

l  Switches,servers and routers

l  Data Center networks

l  Storage area networks

l  High performance computing

l  Telecommunication and wireless infrastructure

l  Medical diagnostics and networking

l  Test and measurement equipment

Industry  Standards

l  100G Ethernet(IEEE 802.3bj)

l  25G  Ethernet(IEEE 802.3by)

l  InfiniBand EDR

l  SFF-8665   QSFP+  28G  4X Pluggable  Transceiver  Solution(QSFP28)

l  SFF-8402 SFP+ 1X 28Gb/s Pluggable Transceiver  Solution(SFP28)

Technical  Documents

l  108-32081 QSFP28  Copper  Module  Direct  Attach  Cable  Assembly

l  108-2364  Single  Port and Ganged  SFP+ Cages,Zsfp+  Single  Port and Ganged Cages,and SFP+  Copper Direct Attach Cable Assemblies.

 High Speed Characteristics 

Parameter

Symbol

Min

Typical

Max

Unit

Note

Differential   Impedance

TDR

90

100

110

Ώ


Insertion   loss

SDD21

-22.48



dB

At   12.8906 GHz

Differential   Return Loss

SDD11

SDD22



See   1

dB

At   0.05 to 4.1 GHz



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



See 3

dB

At   0.01 to 12.89 GHz



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

Notes:

1.     Reflection Coefficient given by   equation SDD11(dB) < -16.5 + 2 × SQRT(f ), with f   in GHz

2.     Reflection Coefficient given by   equation SDD11(dB) < -10.66 + 14 × log10(f/5.5),   with f in GHz

3.     Reflection Coefficient given by   equation SCD11(dB) < -22 + (20/25.78)*f, with f in GHz

4.     Reflection Coefficient given by   equation SCD11(dB) < -15 + (6/25.78)*f, with f in GHz

5.     Reflection Coefficient given by   equation SCD21(dB) < -27 + (29/22)*f, with f in GHz

 

Pin Descriptions 

SFP28 Pin Function Definition

Pin

Logic

Symbol

Name/Description

Notes

1


VeeT

Transmitter   Ground


2

LV-TTL-O

TX_Fault

N/A

1

3

LV-TTL-I

TX_DIS

Transmitter   Disable

2

4

LV-TTL-I/O

SDA

Tow   Wire Serial Data


5

LV-TTL-I

SCL

Tow   Wire Serial Clock


6


MOD_DEF0

Module   present, connect to VeeT


7

LV-TTL-I

RS0

N/A

1

8

LV-TTL-O

LOS

LOS of   Signal

2

9

LV-TTL-I

RS1

N/A

1

10


VeeR

Reciever   Ground


11


VeeR

Reciever   Ground


12

CML-O

RD-

Reciever   Data Inverted


13

CML-O

RD+

Reciever   Data Non-Inverted


14


VeeR

Reciever   Ground


15


VccR

Reciever   Supply 3.3V


16


VccT

Transmitter   Supply 3.3V


17


VeeT

Transmitter   Ground



18

CML-I

TD+


Transmitter   Data Non-Inverted



19

CML_I

TD-


Transmitter   Data Inverted



20


VeeT


Transmitter   Ground


1.

Signals   not supported in SFP+ Copper pulled-downto VeeT with 30K ohms resistor


2.

Passive   cable assemblies do not support

LOS   and TX_DIS


100G QSFP28/4SFP28 Direct Attach Cable (DAC) Datasheet(图1)

QSFP28 Pin Function Definition

 

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-

SCL

2-wire serial interface clock


I/O











12

LVCMOS-

SDA

2-wire serial interface data


I/O











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


100G QSFP28/4SFP28 Direct Attach Cable (DAC) Datasheet(图2)100G QSFP28/4SFP28 Direct Attach Cable (DAC) Datasheet(图3)

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

The connector is compatible with the SFF-8432 and SFF-8436 specification.

 

100G QSFP28/4SFP28 Direct Attach Cable (DAC) Datasheet(图4)

Regulatory Compliance

Feature

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 EU   2015/863

RoHS EU2015/863   compliant

REACH Compliance

REACH  Regulation   (EC) No 1907/2006

REACH (EC) No   1907/2006 compliant