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21

DEMO MANUAL 

DC2685B-KIT

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog 

Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications 

subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

DC2683A MOTHERBOARD SCHEMATIC

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

DATA IN

DATA IN

PO

W

ER

 A

ND

 D

AT

A O

UT

DATA IN

DATA IN

PORT 

4

PO

W

ER

 A

ND

 D

AT

A O

UT

PO

W

ER

 A

ND

 D

AT

A O

UT

PO

W

ER

 A

ND

 D

AT

A O

UT

PORT 

3

PORT 

2

PORT 

1

OUT7

OUT8

OUT5

OUT6

OUT3

OUT4

OUT1

OUT2

SIZE

DATE

:

IC 

NO.

REV.

SH

EE

T

OF

TITLE:

APPRO

VAL

S

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO 

DESIGN 

A

CIRCUIT 

THAT 

MEETS 

CUSTOMER-

SUPPLIED SPECIFICATIONS;

HO

W

EV

ER

, I

T R

EM

AI

NS

 T

HE

 C

US

TOMER'S RESPONSIBILITY TO

VE

RI

FY

 P

RO

PE

AN

D R

EL

IA

BL

E O

PE

RA

TI

ON

 IN

 T

HE

 A

CT

UA

L

AP

PL

IC

AT

IO

N.

  C

OM

PO

NE

NT

 S

UB

ST

IT

UT

IO

N A

ND

 P

RI

NT

ED

CIRCUIT

 BO

ARD L

AYO

UT

 MAY SIG

NIF

ICANT

LY

 AF

FE

CT

 CIRCUIT

PERF

ORMANCE 

OR

 REL

IABIL

IT

Y.  CO

NT

ACT

 ADI APPL

ICAT

IO

NS 

ENG

INEERING

 F

OR 

ASSIST

ANCE.

THIS CIRCUIT IS PROP

RIETARY TO ADI AND

SCHEMATIC

SUPPLIED 

FOR 

USE 

WITH 

ADI 

PARTS.

SCALE = NONE

www.l

in

ear.

co

m

www.analog.co

m

TEL: 

(408) 

432-1900

MILPITAS, CA 

95035

1630 McCARTHY BLVD.

1

Tuesday, March 06, 2018

22

IEEE 802.3bt 4-PORT PSE MOTHERBOARD

KIM T.

DILIAN R.

N/A

DEMO CIRCUIT 2683A

SIZE

DATE

:

IC 

NO.

REV.

SH

EE

T

OF

TITLE:

APPRO

VAL

S

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO 

DESIGN 

A

CIRCUIT 

THAT 

MEETS 

CUSTOMER-

SUPPLIED SPECIFICATIONS;

HO

W

EV

ER

, I

T R

EM

AI

NS

 T

HE

 C

US

TOMER'S RESPONSIBILITY TO

VE

RI

FY

 P

RO

PE

AN

D R

EL

IA

BL

E O

PE

RA

TI

ON

 IN

 T

HE

 A

CT

UA

L

AP

PL

IC

AT

IO

N.

  C

OM

PO

NE

NT

 S

UB

ST

IT

UT

IO

N A

ND

 P

RI

NT

ED

CIRCUIT

 BO

ARD L

AYO

UT

 MAY SIG

NIF

ICANT

LY

 AF

FE

CT

 CIRCUIT

PERF

ORMANCE 

OR

 REL

IABIL

IT

Y.  CO

NT

ACT

 ADI APPL

ICAT

IO

NS 

ENG

INEERING

 F

OR 

ASSIST

ANCE.

THIS CIRCUIT IS PROP

RIETARY TO ADI AND

SCHEMATIC

SUPPLIED 

FOR 

USE 

WITH 

ADI 

PARTS.

SCALE = NONE

www.l

in

ear.

co

m

www.analog.co

m

TEL: 

(408) 

432-1900

MILPITAS, CA 

95035

1630 McCARTHY BLVD.

1

Tuesday, March 06, 2018

22

IEEE 802.3bt 4-PORT PSE MOTHERBOARD

KIM T.

DILIAN R.

N/A

DEMO CIRCUIT 2683A

SIZE

DATE

:

IC 

NO.

REV.

SH

EE

T

OF

TITLE:

APPRO

VAL

S

PCB DES.

APP ENG.

CUSTOMER NOTICE

ADI HAS MADE A BEST EFFORT TO 

DESIGN 

A

CIRCUIT 

THAT 

MEETS 

CUSTOMER-

SUPPLIED SPECIFICATIONS;

HO

W

EV

ER

, I

T R

EM

AI

NS

 T

HE

 C

US

TOMER'S RESPONSIBILITY TO

VE

RI

FY

 P

RO

PE

AN

D R

EL

IA

BL

E O

PE

RA

TI

ON

 IN

 T

HE

 A

CT

UA

L

AP

PL

IC

AT

IO

N.

  C

OM

PO

NE

NT

 S

UB

ST

IT

UT

IO

N A

ND

 P

RI

NT

ED

CIRCUIT

 BO

ARD L

AYO

UT

 MAY SIG

NIF

ICANT

LY

 AF

FE

CT

 CIRCUIT

PERF

ORMANCE 

OR

 REL

IABIL

IT

Y.  CO

NT

ACT

 ADI APPL

ICAT

IO

NS 

ENG

INEERING

 F

OR 

ASSIST

ANCE.

THIS CIRCUIT IS PROP

RIETARY TO ADI AND

SCHEMATIC

SUPPLIED 

FOR 

USE 

WITH 

ADI 

PARTS.

SCALE = NONE

www.l

in

ear.

co

m

www.analog.co

m

TEL: 

(408) 

432-1900

MILPITAS, CA 

95035

1630 McCARTHY BLVD.

1

Tuesday, March 06, 2018

22

IEEE 802.3bt 4-PORT PSE MOTHERBOARD

KIM T.

DILIAN R.

N/A

DEMO CIRCUIT 2683A

RT28

75

RJ45

J1D

TE, 5569262-1

4-1

31

4-2

32

4-3

33

4-4

34

4-5

35

4-6

36

4-7

37

4-8

38

CT3

0.01uF

0805

100V

R60

0

1206

CT8

0.01uF

0805

100V

RT32

75

RJ45

SHIELD

J1I

TE, 5569262-1

9-1

81

9-2

82

9-3

83

9-4

84

9-5

85

9-6

86

9-7

87

9-8

88

RT20

75

RT26

75

RT8

75

R62

0

1206

CT15

0.01uF

0805

100V

RT30

75

RT1

75

CG6 1000pF

1808

2kV

RJ45

J1B

TE, 5569262-1

2-1

11

2-2

12

2-3

13

2-4

14

2-5

15

2-6

16

2-7

17

2-8

18

RT18

75

RT24

75

T4

WURTH, 749022016

2

22

3

24

23

1

5

4

6

8

7

9

11

10

12

20

21

19

17

18

16

14

15

13

R48

0

1206

CT2

0.01uF

0805

100V

CT11

0.01uF

0805

100V

RT22

75

T2

WURTH, 749022016

2

22

3

24

23

1

5

4

6

8

7

9

11

10

12

20

21

19

17

18

16

14

15

13

R52

0

1206

CT16

0.01uF

0805

100V

R56

0

1206

R50

0

1206

C6 1000pF

1808 2KV

CT5

0.01uF

0805

100V

R54

0

1206

CG3 1000pF

1808

2kV

RT2

75

RT9

75

RT13

75

R47

0

1206

RT5

75

R58

0

1206

CG8 1000pF

1808

2kV

CT12

0.01uF

0805

100V

RT11

75

RJ45

J1H

TE, 5569262-1

8-1

71

8-2

72

8-3

73

8-4

74

8-5

75

8-6

76

8-7

77

8-8

78

RT15

75

R59

0

1206

CT7

0.01uF

0805

100V

RT25

75

CG4 1000pF

1808

2kV

RT4

75

RJ45

J1F

TE, 5569262-1

6-1

51

6-2

52

6-3

53

6-4

54

6-5

55

6-6

56

6-7

57

6-8

58

CT13

0.01uF

0805

100V

CT1

0.01uF

0805

100V

RJ45

J1E

TE, 5569262-1

5-1

41

5-2

42

5-3

43

5-4

44

5-5

45

5-6

46

5-7

47

5-8

48

C5 1000pF

1808 2KV

RT17

75

RT27

75

R61

0

1206

RJ45

J1G

TE, 5569262-1

7-1

61

7-2

62

7-3

63

7-4

64

7-5

65

7-6

66

7-7

67

7-8

68

T3

WURTH, 749022016

2

22

3

24

23

1

5

4

6

8

7

9

11

10

12

20

21

19

17

18

16

14

15

13

RT29

75

RT19

75

CT9

0.01uF

0805

100V

RT31

75

RT7

75

CT14

0.01uF

0805

100V

RT21

75

CG1 1000pF

1808

2kV

R51

0

1206

R55

0

1206

CT4

0.01uF

0805

100V

RT23

75

R53

0

1206

CG5 1000pF

1808

2kV

CG2 1000pF

1808

2kV

CT10

0.01uF

0805

100V

CG7 1000pF 1808 2kV

R57

0

1206

RJ45

J1C

TE, 5569262-1

3-1

21

3-2

22

3-3

23

3-4

24

3-5

25

3-6

26

3-7

27

3-8

28

CT6

0.01uF

0805

100V

RT12

75

RT16

75

RT6

75

RJ45

J1A

TE, 5569262-1

1-1

1

1-2

2

1-3

3

1-4

4

1-5

5

1-6

6

1-7

7

1-8

8

T1

WURTH, 749022016

2

22

3

24

23

1

5

4

6

8

7

9

11

10

12

20

21

19

17

18

16

14

15

13

R49

0

1206

RT10

75

RT3

75

RT14

75

Summary of Contents for DC2685B-KIT

Page 1: ...1 LTC4292 PSE chipset Up to four IEEE 802 3af IEEE 802 3at or IEEE 802 3bt powered devices PDs can be connected All registered trademarks and trademarks are the property of their respective owners BO...

Page 2: ...ther 5 Connect a supply to the motherboard with the pos itive rail to AGND and negative rail to VEE as shown in Figure 3 Use a power supply capable of sourcing the maximum delivered power for all four...

Page 3: ...3 DEMO MANUAL DC2685B KIT Rev B QUICK START PROCEDURE Figure 1 DC2684A B Jumpers AUTO 4PV PM0 and PM1 Figure 2 Inserting the DC2684A B Daughter Card Into J7 of the DC2683A Motherboard...

Page 4: ...s powered Table 3 DC2685B KIT Power Supply Voltage Range per PSE Type IEEE TYPE Supply Voltage Range Type 3 51V to 57V Type 4 53V to 57V Table 4 DC2685B KIT Address Settings SW3 ADDRESS AD3 AD2 LO LO...

Page 5: ...84A B demonstrates proper LTC4291 1 LTC4292 board layout on a compact daughter card approximately the height and width of a 2 4 RJ45 connector Isolation and Power Supplies The LTC4291 1 LTC4292 chipse...

Page 6: ...d R10 respectively This sets these two address bits low Address pins AD2 and AD3 are brought out to the 30 pin connector for con figuration on the motherboard See Figure 6 and Table 4 4PV Jumpers The...

Page 7: ...rrect before applying power LED Indicators VEE LED D5 and VDD LED D7 indicate if a voltage is present at these supplies Verify these LEDs are off before inserting or removing the daughter card Each pa...

Page 8: ...NOT install jumper make no connections JP2 MODE Do NOT install jumper make no connections JP3 Watchdog Enables Do NOT install jumper make no connections JP4 EE Jumper MUST be in the EN position JP5 S...

Page 9: ...9 DEMO MANUAL DC2685B KIT Rev B DC2684A B DAUGHTER CARD LAYOUT FILES Figure 7 DC2684A B Top Silkscreen Figure 8 DC2684A B Top Layer...

Page 10: ...10 DEMO MANUAL DC2685B KIT Rev B DC2684A B DAUGHTER CARD LAYOUT FILES Figure 9 DC2684A B Inner Layer 2 Figure 10 DC2684A B Inner Layer 3...

Page 11: ...11 DEMO MANUAL DC2685B KIT Rev B DC2684A B DAUGHTER CARD LAYOUT FILES Figure 11 DC2684A B Bottom Layer Figure 12 DC2684A B Bottom Silkscreen...

Page 12: ...12 DEMO MANUAL DC2685B KIT Rev B DC2683A MOTHER BOARD LAYOUT FILES Figure 13 DC2683A Top Silkscreen...

Page 13: ...13 DEMO MANUAL DC2685B KIT Rev B DC2683A MOTHER BOARD LAYOUT FILES Figure 14 DC2683A Top Layer...

Page 14: ...14 DEMO MANUAL DC2685B KIT Rev B Figure 15 DC2683A Inner Layer 2 DC2683A MOTHER BOARD LAYOUT FILES...

Page 15: ...15 DEMO MANUAL DC2685B KIT Rev B Figure 16 DC2683A Inner Layer 3 DC2683A MOTHER BOARD LAYOUT FILES...

Page 16: ...16 DEMO MANUAL DC2685B KIT Rev B Figure 17 DC2683A Bottom Layer DC2683A MOTHER BOARD LAYOUT FILES...

Page 17: ...17 DEMO MANUAL DC2685B KIT Rev B Figure 18 DC2683A Bottom Silkscreen DC2683A MOTHER BOARD LAYOUT FILES...

Page 18: ...ALS PCB DES APP ENG CUSTOMER NOTICE ADI HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER SUPPLIED SPECIFICATIONS HOWEVER IT REMAINS THE CUSTOMER S RESPONSIBILITY TO VERIFY PROPER AND REL...

Page 19: ...STANCE THIS CIRCUIT IS PROPRIETARY TO ADI AND SCHEMATIC SUPPLIED FOR USE WITH ADI PARTS SCALE NONE www linear com www analog com TEL 408 432 1900 MILPITAS CA 95035 1630 McCARTHY BLVD 2 2 2 IEEE 802 3b...

Page 20: ...ADI PARTS SCALE NONE www linear com www analog com TEL 408 432 1900 MILPITAS CA 95035 1630 McCARTHY BLVD 1 Tuesday March 06 2018 1 2 IEEE 802 3bt 4 PORT PSE MOTHERBOARD KIM T DILIAN R N A DEMO CIRCUI...

Page 21: ...MER S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILI...

Page 22: ...ot disclose or transfer any portion of the Evaluation Board to any other party for any reason Upon discontinuation of use of the Evaluation Board or termination of this Agreement Customer agrees to pr...

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