Improved QSFP and SFP+ Connectors -...
Transcript of Improved QSFP and SFP+ Connectors -...
![Page 1: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/1.jpg)
Amphenol1/21/2010 1
Improved QSFP and SFP+ Connectors
Brian Kirk, Greg McSorleyAmphenol Corp
January 26, 2010
![Page 2: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/2.jpg)
Amphenol1/21/2010 2
Current QSFP
QSFP Receptacle Measurement Fixture
![Page 3: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/3.jpg)
Amphenol1/21/2010 3
Measurement: Insertion Loss (TX3) and TX3 to TX1 Crosstalk (includes fixture)
0 2 4 6 8 10 12 14 16 18 20-40
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0insertion loss and PSXTALK
Frequency (GHz)
Insertion lossPSNEXTPSFEXT
![Page 4: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/4.jpg)
Amphenol1/21/2010 4
QSFP NEXT Full Cable Assembly
0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00F [GHz]
-80.00
-70.00
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0.00
Y1
Ansoft Corporation Nexxim1QSFP NEXT Tx1Tx3Curve Info
dB20(SDD21)LinearFrequency
dB20(SDD11)LinearFrequency
dB20(SDD22)LinearFrequency
![Page 5: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/5.jpg)
Amphenol1/21/2010 5
Current vs. Enhanced QSFP against SFF-8431 (SFP) spec lines
![Page 6: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/6.jpg)
Amphenol1/21/2010 6
Differential Insertion Loss
0 5 10 15-10
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Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket SDD21
long row insertion lossshort row insertion lossSFF-8431 equivalent fixture thruSFF-8431 spec line (max)SFF-8431 spec line (min)
0 5 10 15-10
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Frequency (GHz)
Mag
nitu
de (d
B)
Enhanced QSFP socket SDD21
long row insertion lossshort row insertion lossSFF-8431 equivalent fixture thruSFF-8431 spec line (max)SFF-8431 spec line (min)
*(amplitude fixture corrected – SFF-8431 C.1.1 & C.1.2)
![Page 7: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/7.jpg)
Amphenol1/21/2010 7
Differential Return Loss
0 5 10 15-40
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket SDD11
long row return lossshort row return lossSFF-8431 spec line
0 5 10 15-40
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Frequency (GHz)
Mag
nitu
de (d
B)
Enhanced QSFP socket SDD11
long row return lossshort row return lossSFF-8431 spec line
Current Enhanced
![Page 8: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/8.jpg)
Amphenol1/21/2010 8
Common mode return loss
0 1 2 3 4 5 6 7 8 9 10-20
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Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket SCC11
long row return lossshort row return lossSFF-8431 spec line
0 1 2 3 4 5 6 7 8 9 10-20
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Frequency (GHz)M
agni
tude
(dB
)
Enhanced QSFP socket SCC11
long row return lossshort row return lossSFF-8431 spec line
Current Enhanced
![Page 9: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/9.jpg)
Amphenol1/21/2010 9
Mode conversion
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Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket SCD12
long row mode conversionshort row mode conversionSFF-8431 spec line
0 1 2 3 4 5 6 7 8 9 10-40
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Frequency (GHz)
Mag
nitu
de (d
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Enhanced QSFP socket SCD12
long row mode conversionshort row mode conversionSFF-8431 spec line
0 1 2 3 4 5 6 7 8 9 10-40
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Frequency (GHz)
Mag
nitu
de (d
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Current production QSFP socket SDC12
long row mode conversionshort row mode conversionSFF-8431 spec line
0 1 2 3 4 5 6 7 8 9 10-40
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Frequency (GHz)
Mag
nitu
de (d
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Enhanced QSFP socket SDC12
long row mode conversionshort row mode conversionSFF-8431 spec line
Current Enhanced
![Page 10: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/10.jpg)
Amphenol1/21/2010 10
Individual near-end crosstalk sources
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Frequency (GHz)
Mag
nitu
de (d
B)
Current produc tion QSFP socket differential long row NEXT
Long row-long rowLong row - short row (1)Long row - short row (2)SFF-8431 spec line
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F requenc y (G Hz )
Mag
nitu
de (d
B)
E nhanc ed Q S F P s oc k et d ifferent ia l long row NE XT
Long row-long rowLong row - s hort row (1)Long row - s hort row (2)S F F -8431 s pec line
0 5 10 15-60
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Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket differential short row NEXT
Short row-long row (1)Short row - long row (2)Short row - short rowSFF-8431 spec line
0 5 10 15-60
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Enhanced QSFP socket differential short row NEXT
Short row-long row (1)Short row - long row (2)Short row - short rowSFF-8431 spec line
Current Enhanced
![Page 11: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/11.jpg)
Amphenol1/21/2010 11
Individual near-end crosstalk sources
0 5 10 15-60
-50
-40
-30
-20
-10
0
Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket differential long row NEXT
Long row-long rowLong row - short row (1)Long row - short row (2)SFF-8431 spec line
0 5 10 15-60
-50
-40
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-20
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Enhanced QSFP socket differential long row NEXT
Long row-long rowLong row - short row (1)Long row - short row (2)SFF-8431 spec line
0 5 10 15-60
-50
-40
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Current production QSFP socket differential short row NEXT
Short row-long row (1)Short row - long row (2)Short row - short rowSFF-8431 spec line
0 5 10 15-60
-50
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Enhanced QSFP socket differential short row NEXT
Short row-long row (1)Short row - long row (2)Short row - short rowSFF-8431 spec line
Current Enhanced
![Page 12: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/12.jpg)
Amphenol1/21/2010 12
SFP+ Stacked
![Page 13: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/13.jpg)
Amphenol1/21/2010 13
Compliance Board measurements
0 2 4 6 8 10-30
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Frequency (GHz)
Mag
nitu
de (d
B)
Return Loss for SFP+ on Broadcom Board (Compliance)
Aph New#1#2SFF Compliance Boards Spec. Page 69
End of the cable SOLTComplianceBoard Measurements
![Page 14: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/14.jpg)
Amphenol1/21/2010 14
Effect of Spirent Host Compliance Card
AmphenolSpirent
Paddle Card PCB TraceHost PCB Trace
Connector
Mating Interface Area
![Page 15: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/15.jpg)
Amphenol1/21/2010 15
Receptacle Comparison (12ps)
Standard SFP+ Testcard
500 550 600 650 700 750 800 850 90075
80
85
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100
105
110
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120
125
Time (ps)
Ohm
s)
SFP+ Receptacle
New Aph#1#2
ImprovedImpedance
![Page 16: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/16.jpg)
Amphenol1/21/2010 16
Stacked SFP Comparison Measurements
TDR – Top port
Via on Motherboard
leadframe
Mating Interface
Amphenol Blue
Older component
Footprint has been improvedIn new release
![Page 17: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/17.jpg)
Amphenol1/21/2010 17
Top port Stacked Sfp+
0 1 2 3 4 5 6 7 8 9 10-12
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-8
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0
Frequency (GHz)
Sdd
12 M
agni
tude
in d
B
SFP+ Comparison: Differential Insertion Loss
Other Supplier: TX PairAmphenol: TX Pair
![Page 18: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/18.jpg)
Amphenol1/21/2010 18
Common Mode Return Loss
0 1 2 3 4 5 6 7 8 9 10-20
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Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Common Mode Return Loss (Top Ports)
AmphenolSupplier BSpec Limit
0 1 2 3 4 5 6 7 8 9 10-20
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Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Common Mode Return Loss (Bottom Ports)
AmphenolSupplier BSpec Limit
![Page 19: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/19.jpg)
Amphenol1/21/2010 19
Differential Return Loss
0 1 2 3 4 5 6 7 8 9 10-40
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-10
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Differential Return Loss (Top Ports)
AmphenolSupplier BSpec Limit
0 1 2 3 4 5 6 7 8 9 10-40
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-30
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-5
0
Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Differential Return Loss (Bottom Ports)
AmphenolSupplier BSpec Limit
![Page 20: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/20.jpg)
Amphenol1/21/2010 20
NEXT Crosstalk
0 1 2 3 4 5 6 7 8 9 10-60
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Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - NEXT (Bottom Ports)
AmphenolSupplier BSpec Limit
0 1 2 3 4 5 6 7 8 9 10-60
-55
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Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - NEXT (Top Ports)
AmphenolSupplier BSpec Limit
![Page 21: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/21.jpg)
Amphenol1/21/2010 21
Mode Conversion
0 1 2 3 4 5 6 7 8 9 10-40
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Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Mode Conversion (Sdc) (Top Ports)
AmphenolSupplier BSpec Limit
0 1 2 3 4 5 6 7 8 9 10-40
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Mode Conversion (Sdc) (Bottom Ports)
AmphenolSupplier BSpec Limit
0 1 2 3 4 5 6 7 8 9 10-40
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0
Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Mode Conversion (Scd) (Top Ports)
AmphenolSupplier BSpec Limit
0 1 2 3 4 5 6 7 8 9 10-40
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-5
0
Frequency (GHz)
Mag
nitu
de (d
B)
Stacked SFP Comparision - Mode Conversion (Scd) (Bottom Ports)
AmphenolSupplier BSpec Limit
![Page 22: Improved QSFP and SFP+ Connectors - IEEEgrouper.ieee.org/groups/802/3/ba/public/jan10/mcsorley_01_0110.pdf · Return Loss for SFP+ on Broadcom Board (Compliance) Aph New #1 #2 SFF](https://reader034.fdocuments.in/reader034/viewer/2022042323/5f0d9ad57e708231d43b2e1a/html5/thumbnails/22.jpg)
Amphenol1/21/2010 22
Insertion loss
0 1 2 3 4 5 6 7 8 9 10-12
-10
-8
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-4
-2
0
Frequency (GHz)
Sdd
12 M
agni
tude
in d
BSFP+ Comparison: Differential Insertion Loss
Other Supplier: TX PairAmphenol: TX Pair