400G QSFP-DD Direct Attach Cable - PAM4 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

QSFP-DD passive copper cable assembly feature eight differential copper pairs,providing four data transmission channels at speeds up to 56Gbps(PAM4) per channel,and meets 400G Ethernet and InfiniBand Enhanced Data Rate(EDR) requirements.Available in a broad rang of wire gages-from 28AWG through 30AWG-this 400G copper cable assembly features low insertion loss and low cross talk.

QSFP-DD uses PAM4 signals for transmission, which doubles the rate. However, there are more stringent requirements for cable insertion loss. For detailed requirements, please see High Speed Characteristics.

Features  and Benefits

l  Compatible with IEEE 802.3bj and IEEE 802.3cd

l     Supports aggregate data rates of 400Gbps(PAM4)

l  Optimized construction to minimize insertion loss and cross talk

l  Pull-to-release slide latch design

l  28AWG 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 omplia

 

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  400G Ethernet(IEEE 802.3cd)

l  InfiniBand EDR

High Speed Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Note

Differential   Impedance

TDR

90

100

110

Ώ


Insertion   loss

SDD21

-16.06



dB

At   13.28 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

QSFP-DD 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

400G QSFP-DD Direct Attach Cable - PAM4 Datasheet(图1)

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

39


GND

Ground

40

CML-I

Tx6n

Transmitter   Inverted Data Input

41

CML-I

Tx6p

Transmitter   Non-Inverted Data Input

42


GND

Ground

43

CML-I

Tx8n

Transmitter   Inverted Data Input

44

CML-I

Tx8p

Transmitter   Non-Inverted Data Input

45


GND

Ground

46


Reserved


47


VS1


48


VccRx1

+3.3V   Power supply

49


VS2


50


VS3


51


GND

Ground

52

CML-O

Rx7p

Receiver   Non-Inverted Data Output

53

CML-O

Rx7n

Receiver   Inverted Data Output

54


GND

Ground

55

CML-O

Rx5p

Receiver   Non-Inverted Data Output

56

CML-O

Rx5n

Receiver   Inverted Data Output

57


GND

Ground

58


GND

Ground

59

CML-O

Rx6n

Receiver   Inverted Data Output

60

CML-O

Rx6p

Receiver   Non-Inverted Data Output

61


GND

Ground

62

CML-O

Rx8n

Receiver   Inverted Data Output

63

CML-O

Rx8p

Receiver   Non-Inverted Data Output

64


GND

Ground

65


NC


66


Reserved


67


VccTx1

+3.3V   Power supply

68


VCC2

+3.3V   Power supply

69


Reserved


70


GND

Ground

71

CML-I

Tx7p

Transmitter   Non-Inverted Data Input

72

CML-I

Tx7n

Transmitter   Inverted Data Input


73


GND

Ground

74

CML-I

Tx5p

Transmitter   Non-Inverted Data Input

75

CML-I

Tx5n

Transmitter   Inverted Data Input

76


GND

Ground




Mechanical Specifications

The connector is compatible with the QSFP-DD specification.

400G QSFP-DD Direct Attach Cable - PAM4 Datasheet(图2)

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