100g qsfp28/4sfp28 direct attach cable (dac) -凯发k8手机娱乐官方网站

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

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

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

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

1

30

2

30

3

30/26

4

26

5

26

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 2011/6/5/eu and it's amendment   directives 6/6

rohs 6/6 compliant