understanding 3m™ ultra hard metric (uhm) connectors ... · understanding 3m ultra hard metric...

Understanding 3M™ Ultra Hard Metric (UHM) Connectors

3M Electronic Solutions Division 3MUHMWEBID_100809

Understanding 3M Ultra Hard Metric (UHM) Connectors“Enabling performance of next generation 2 mm Hard Metric systems”

© 3M 2009. All Rights Reserved.

Webinar Instructions Overview3M Electronic Solutions Division

Scheduled for 30 minutes including a brief Q & A at the end.

Recorded for rebroadcasting at a later date..

All questions need to be sent via chat feature; Incoming phone lines are mutedAll questions need to be sent via chat feature; Incoming phone lines are muted

Selected questions will be answered in Q&A. All other questions will be answered directly via email or a phone call. y p

Promo: Flip™ UltraHD Video Camcorder

Registered participants will need to enter the promotional code: 3MUHM in the Registered participants will need to enter the promotional code: 3MUHM in the field provided in the post webinar survey

** Only Live Event participants eligible for giveaway **


O y e e t pa t c pa ts e g b e o g ea ay


3M Electronic Solutions Division

Understanding 3M™ Ultra Hard Metric (UHM) Connectors“Enabling performance of next generation 2 mm Hard Metric systems”

Jim Vana Jim Vana 3M High Speed Interconnects Applications Engineer

© 3M 2009. All Rights Reserved.© 3M 2009. All Rights Reserved.

2mm Hard Metric (HM)

2mm HM is the industry’s most successful backplane connector system with a strong history. It is adopted by many backplane y g y p y y pstandards…. Right Angle Female Receptacle ( Socket ) Vertical Male

Pin Header

cPCI type backplane (5-row A22, B19, B22)VME 64x backplane (5-row B19) PXI backplane (5-row A22, B22)

J1J1

J2

Backplane

3U Front Plug-in board

Widely available from many connector manufacturers with a vibrant supply chain

4© 3M 2009. All Rights Reserved.

pp y

Crosstalk

One of the major problems in high-speed, high density applications is Crosstalk.

Increased NoiseIncreased Noise at 7 Gbps

TDR

TX

NEXT

FEXT


The 3MTM Ultra Hard Metric (UHM) Socket Connector

The UHM connector offers the ability yto support high-speed differential signals in 2mm HM systems without costly backplane and daughter card costly backplane and daughter card re-designs.

Th UHM t i hi ld d HM The UHM connector is a shielded HM socket, designed to be intermateable and footprint compatible to HM sockets with superior impedance control and crosstalk reduction.


Shielding of the 3MTM Ultra Hard Metric (UHM) Socket C tConnector

The UHM socket features i di id l i l hi ldi f individual coaxial shielding of each signal contact. This enables orientation of differential pairs in both rows and columns.


Horizontal Contact ShieldingVertical Contact Shielding

Performance Improvement by Performance Improvement by Crosstalk reduction…

UHM decreased

noise at 7 Gbps TXFEXT

TDR

NEXT

Increased Noise at 7 Gbps


Example of a 2mm HM Backplane Connector System with a Example of a 2mm HM Backplane Connector System with a 3MTM Ultra Hard Metric (UHM) Socket Connector

UHM Right Angle Socket / Receptacle

ExternalExternal ground /

shield wipers

Typical 5-row 2 mm HMTypical 5 row 2 mm HM Vertical Header

( +2 ground pins version shown )UHM internal shielding

6th row press fit pins

9

6 row press fit pins


Compatibility to the HM PCB-footprint

The 3MTM Ultra Hard Metric (UHM) Socket Connector’s internal coaxial t hi ldi i t d t d th PCB th h th f/ type shielding is connected to ground on the PCB through the f/z-row. Two options are available: Every odd pin is connected (f) or all pins are connected (f/z).

f /z ( shield)

e

d

c

b

a2 mm

2 mm

10

Edge of Free Board

2 mm

Finished hole 0.550 - 0.650 mm


3MTM Ultra Hard Metric (UHM) Socket 3 U a a d e c (U ) Soc eConnector Signal Integrity Testing

Connectors under test...output

• RA Socket on Daughter Card:

• 3M UHM B11 connectorwith external wipers input

p

• Header on Backplane PCB:

• cPCI 5+2 Vertical Press fit header

3

fit header

Surfacemount SMA connectors

Test Board Electrical Specifications3M Test Board Materials

• FR406 (loss tan approx 0.014 > 500MHz)• 1oz (35μm) Cu• 0.3mm (11.8mil) trace width

• Surfacemount SMA connectors50 +/- 5Ω @ 3ps (20/80%) rise time

• approx. 23ps (20/80%) input step to DUT approx. 29ps (20/80%) step at header

• All signal vias backdrilled to minimize via

11

• Header 55mm / Socket 72mm long • Total trace length 127mm (5 inches)

gcapacitance


Row Differential Eye Patterns at 7Gb/s

Recorded Eye Diagrams (including test board) at 7Gb/s show equal performance for all rows with an eye opening of 60% or betterperformance for all rows, with an eye opening of 60% or better

A B C

D E


Row Differential Impedance ProfileRow Differential Impedance Profile[33ps (20/80) rise time, typical for 5Gb/s]

cPCI Vertical Header mated to the 3MTM Ultra Hard Metric

UHM Row Differential Impedance110

cPCI Vertical Header mated to the 3MTM Ultra Hard Metric (UHM) Right Angle Socket

23 ps95

100

105

110

e (o

hms)

(20%-80%)

80

85

90

Diffe

rent

ial I

mpe

danc

A23B23

UHM Socket 33 ps

70

75

0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25

Time (ns)

C23D23E23

cPCI Header

Vias

Socket Vias

UHM Socket

33 ps(20%-80%)


3MTM Ultra Hard Metric (UHM) Socket Connector Row Diff ti l I ti L

cPCI Vertical Header mated to UHM Right Angle Socket (Excluding PCB t i l di h d d k t i ff t )

Differential Insertion Loss

PCB traces, including header and socket via effects)


TDR Multi-Aggressor CrosstalkTDR Multi Aggressor Crosstalk[33ps (20/80) rise time, typical for 5Gb/s]

Multi-Aggressor Crosstalk

7%

8%

2 NEXT+2 FEXT @33ps

TDR 3%

4%

5%

6%

mai

n C

ross

talk

(%)

TX

NEXT

FEXT

TDR

0%

1%

2%

3%

A B C D ETi

me

Dom

NEXT A B C D E

Row


3MTM Ultra Hard Metric (UHM) Socket mated to 2mm Hard Metric Header S-parameter Model2mm Hard Metric Header S-parameter Model

A 40-port S-parameter model has been developed for 5 row UHM connector mated to developed for 5 row UHM connector mated to a 5+2 row Hard Metric header.CST Microwave Studio was used to create a model using a bandwidth of 30GHz.model using a bandwidth of 30GHz.The model does not include via effects.

E Row


VME 64X 6U Application IEC 61076-4-101VME 64X 6U Application IEC 61076-4-101 2 mm Hard Metric Connectors

5 rows x 19 columns (B19)

Problem:Increasing I/O throughput through P0 2 mm Hard Metric connector

Solution:Solution:The 3MTM Ultra Hard Metric (UHM) Socket Connector B19 enabled 4 lanes PCI Express data link through P0 PCI Express data link through P0 between the computer board and the carrier


cPCI 3U Application – Rear I/OcPCI 3U Application Rear I/OProblem:Increasing I/O throughput through rear I/O plug in boardIncreasing I/O throughput through rear I/O plug in board

Solution:The 3MTM Ultra Hard Metric (UHM) Socket Connector B22 enabled SATA data link through J2 connector

J2Type B 1-22pos Type AB 1 22

rJ2

3U Front Plug-in board 3U Rear Plug-in board

P2

J1

yp p

Type A 1-25pos

1-22pos

P1

Cable I/O option


p

6U ApplicationProblem:Increasing I/O throughput through rear I/O plug in board

Solution:The 3MTM Ultra Hard Metric (UHM) Socket Connector B22 enabled Multi-Gigabit data links

6U Front Plug-in board 6U Rear Plug-in board

J5

J4

Type B22

Type A25 Type A 25pos

rJ5Type AB 22pos

rJ4

rP5

rP4P4

P5

J2Type B22

J3Type B19 rJ3Type AB 19pos

rP3

P2

P3 Cable I/O


J1Type A25 P1

3MTM Ultra Hard Metric (UHM) Product family2 mm Hard Metric Standard Connector System

2 mm x 2 mm contact interface5 row: 2 mm x 2 mm PCB footprint (A, B, CL,CR, AB)8 row: 1.5 mm x 2 mm PCB footprint (D, E, FL, FR, DE)

Impedance Matched50 Ω Single Ended50 Ω Single-Ended100 Ω Differential

Low CrosstalkLow Crosstalk<7% Multi aggressor when mated with Unshielded 2mm Header @ Tr=33ps for typical configurations; UHM Socket alone has significantly less Crosstalk

Press-fit sockets are designed to be intermateable to 2mm Hard Metric headers designed to IEC 61076-4-101

20

Press-fit sockets are PCB footprint compatible with 2mm Hard Metric Sockets


Outlook

The 3MTM Ultra Hard Metric (UHM) Socket Connectors, 5-row and 8-row, are available today., y

UHM B22 socket is currently defined in next generation CompactPCI® PICMG 2 30 Standard Draft to support CompactPCI® PICMG 2.30 Standard Draft to support Multi-Gigabit I/O ( 3M work group member )

Work is ongoing on a UHM header for further increased Work is ongoing on a UHM header for further increased system performance with the same design goals and philosophy: to have internal shielding for higher performance and optimum ground connection but still be performance and optimum ground connection, but still be foot print compatible to 5+2 HM headers.


For more information….

Please visit http://www.3m.com/highspeed for…Please visit http://www.3m.com/highspeed for…

Tech DatasheetsTech Datasheets3D modelsS l dSample ordersWhite papersProduct newsAnd more……..


Important NoticeThe information we are furnishing you is being provided free of charge and iss g y s g p g sbased on tests performed at 3M laboratory facilities or by our suppliers. Whilewe believe that these test results are reliable, their accuracy or completeness isnot guaranteed. Your results may vary due to differences in test types andconditions. This information is intended for use by persons with the knowledgeand technical skills to analyze, handle and use such information. You mustevaluate and determine whether the product is suitable for your intended

li ti Th f i i f ti i id d “AS IS” I idi thiapplication. The foregoing information is provided “AS-IS”. In providing thisinformation 3M makes no warranties regarding product use or performance,including any implied warranty of merchantability or fitness for a particular use.

For Product warranty information, please see Product Literature.

3M is a trademark of 3M Company.

All other trademarks are the property of their respective owners

23

All other trademarks are the property of their respective owners.


Question & Answer Session3M Electronic Solutions Division

1. What is PICMG ?

2 Wh ill PICMG 2 30 d ft t d d b l d fi l? 2. When will PICMG 2.30 draft standard be released as final?

3. What are expected to be the most common applications driven b ne t generation CompactPCI? by next generation CompactPCI?

4. Can UHM connector be used for Single-end transmission as well ??


Closing Comments3M Electronic Solutions Division

gLink to webinar recording will be available on 3M’s websites

www 3m com/highspeedwww.3m.com/highspeed

www.3m.com/interconnect

3 /3www.3m.com/3mxpress

Remember to enter the promotional code: 3MUHM in the field provided in the post webinar surveyprovided in the post webinar survey


understanding 3m™ ultra hard metric (uhm) connectors ... · understanding 3m ultra hard metric...

Documents