ERmet ZD Application Note Version 1.1 Technical Features The ERmet ZD is specifically designed for high speed differential signaling in telecom applications at data rates of up to 5 Gbit/s. This robust, high performance, modular connector system is also designed to be used in conjunction with the 2mm hard metric (IEC 61076-4-101) family of connectors. The connector meets the electrical performance requirements of high speed, low voltage differential signaling. The ERmet ZD connector family is available in pressfit versions. The backplane module is a male pin header that has three mating levels. The robust mechanical design and excellent signal integrity are a result of the internal differential shielding scheme and the “L” shaped male shield blades. The inherently rigid male shields stand higher than the signal pins and surround each pair. An improved guidance feature completes the rugged mechanical design. Optimized grid design to improve the RF characteristics. Easy and economical trace routing achieved by in line-design of signal and ground pins. • Modules: 2 pair, 3 pair and 4 pair versions available. • Design: Wafers with individually fully shielded pairs of contacts. • Contacts: Low noise, dual beam, leaf contacts with one ground blade for every pair of signals. • Wafer pitch: 2.5mm from wafer to wafer. • Pitch between signal pins: 1.5mm between pairs (within wafer). • Pitch between pairs: 4.5mm (within wafer). • Ground arrangement: In line with signals at termination and surrounding shield. • Multiline Crosstalk: <3% at 100ps rise time, 250mV swing. • Insertion loss: <1dB up to 3GHz. • Differential Impedance: 100Ω • Propagation Delay: A Pin 97 ±10ps B Pin 107 ±10ps C Pin 125 ±10ps D Pin 134 ±10ps E Pin 157 ±10ps F Pin 166 ±10ps G Pin 187 ±10ps H Pin 199 ±10ps • Power Modules: Closed entry, vertical female backplane modules with stamped blades. • Alignment Features: Improved pre-alignment guide and polarizing features, 4 rigid blades for all modules. 1 www.ERNI.com/contact/ 01/05 Edition 1 Printed in Germany · Subject to modification without prior notice. General Dimensional Drawings Vertical Male Connectors 4 pair / 10 wafer -0,1 0,1 23,4 Date Code 0,05 6,35 Id.-Nr. XXXXXX 0,2 ) 3 -0,1 13,4 XXXXXXX ERNI Löcher ø 0.6 ( 1,7 EE-Zone für durchkontaktierte ±0.05 compliant zone for through hole 2 0,1 A B C D 1 F 4,5 1,5 1,7 a b ab c d cd e f ef g h gh E 2,5 9x2.5= 22,5 24,95 0,75 -0,1 Part Numbers Configuration Pin Version Type 4 (4 pairs) / 10 wafers D 973031 Type 4 (4 pairs) / 10 wafers B 973061 All dimensions in mm 2 www.ERNI.com/contact/ 01/05 Edition 1 Part Number Datum plane depth 3 0,2 4 3,7 5 0,2 6 ( 3 -0,1 ) 7 0,2 8 5,3 0,1 3,8 5,7 10 9 Bezugsebene Tiefe Kontaktversionen, Messerkontakte Contact Selection Options, Male Contacts ±0.05 2,5 ø 0.6 Vertical Male Connectors 3 pair / 10 wafer 18,9 -0,1 Date/Code 13,4 0,05 XXXXXXX ERNI 0,1 ±0.05 3 2 1 5,3 B C D E F 1,7 0,2 ( 3 -0,1 ) 3,8 A 1,5 4,5 a b ab c d cd e f ef 0,2 4 3,7 5 0,2 6 2,5 7 0,1 8 0,1 Kontaktversionen, Messerkontakte Contact Selection Options, Male Contacts 5,7 10 9 6,35 1,7 compliant zone for through hole ø 0.6 3 -0,1 ±0.05 0,2 Löcher ø 0.6 Datum plane depth XXXXXX EE-Zone für durchkontaktierte Bezugsebene Tiefe Ident-Nr. 2,5 9x2.5= 22,5 24,95 0,75 -0,1 Part Numbers Configuration Pin Version Part Number Type 3 (3 pairs) / 10 wafers D 973027 Type 3 (3 pairs) / 10 wafers B 973062 All dimensions in mm 3 www.ERNI.com/contact/ 01/05 Edition 1 Vertical Male Connectors 2 pair / 10 wafer Date/Code 15,4 -0,1 0,2 1,7 ±0.05 compliant zone for through hole ±0.05 2 1 0,1 3,8 A B C 0,2 1,7 2,5 9x2.5= 22,5 24,95 D E F ( 3 -0,1 ) 4,5 a b ab c d cd 0,75 -0,1 Part Numbers Configuration Pin Version Type 2 (2 pairs) / 10 wafers D 973056 Type 2 (2 pairs) / 10 wafers B 973063 All dimensions in mm 4 www.ERNI.com/contact/ 01/05 Edition 1 Part Number Datum plane depth 3 Bezugsebene Tiefe 4 0,2 5 3,7 6 0,2 7 5,3 8 1,5 10 9 0,1 Kontaktversionen, Messerkontakte Contact Selection Options, Male Contacts 5,7 ø 0.6 6,35 XXXXXX Löcher ø 0.6 3 -0,1 0,1 13,4 0,05 XXXXXXX ERNI EE-Zone für durchkontaktierte 2,5 Ident-Nr. Right Angle Female Connectors 4 pair / 10 wafer 9x2.5= 22,5 0,75 2,5 1,5 f e 19,4 h g 4,5 d c b a 10 1 EE-Zone für durchkontaktierte Löcher ø 0.6 ±0.05 compliant zone for through hole ø 0.6 2,4 -0,1 gh h g ef f e cd d c ab b a 973032 XXXXXXX 21,4 -0,1 Date Code 1 10,8 -0,2 1,5 ERNI 1 1,5 0,1 0,1 24,95 15,7 27,9 1,8 ±0.05 0,1 Position Id.-Nr. Part Numbers Configuration Part Number Type 4 (4 pairs) / 10 wafers 973032 All dimensions in mm 5 www.ERNI.com/contact/ 01/05 Edition 1 Right Angle Female Connectors 3 pair / 10 wafer 9x2.5= 22,5 0,75 2,5 4,5 d c 14,9 1,5 f e b a 10 1 EE-Zone für durchkontaktierte Löcher ø 0.6 ±0.05 compliant zone for through hole ø 0.6 ef f e cd d c ab b a XXXXXXX ERNI 973028 16,9 -0,1 Firmensignet Ident-Nr. 1 10,8 -0,2 1,5 1,5 0,1 0,1 2,4 -0,1 1 24,95 11,2 0,1 23,3 1,8 ±0.05 Position Date Code Part Numbers Configuration Part Number Type 3 (3 pairs) / 10 wafers 973028 All dimensions in mm 6 www.ERNI.com/contact/ 01/05 Edition 1 Right Angle Female Connectors 2 pair / 10 wafer 9x2,5= 22,5 0,75 4,5 d c b a 10 11,35 1,5 2,5 1 8,56 1,8 0,1 -0,1 0,1 18,9 0,1 cd d c ab b a 1 XXXXXXX ERNI 973046 10,8 -0,2 1,5 1,5 2,4 Position Id.-Nr. Firmensignet 13,35 -0,1 1 24,95 Date Code EE-Zone für durchkontaktierte Löcher ø0.6 ±0.05 compliant zone for through hole ø0.6 ±0.05 Part Numbers Configuration Part Number Type 2 (2 pairs) / 10 wafers 973046 All dimensions in mm 7 www.ERNI.com/contact/ 01/05 Edition 1 Layouts Backplane Layout 4 Pair Additional GND-holes for improved RF-characteristics in pair a-b Slot 1 Slot 2 2 2 a b c d e f z a b c d e f g h i 2 z ERmet 2 mm 8+2 2 ERmet 2 mm 5+2 25 b c ab d e cd f ef g h a gh 1 ab b c d cd e f ef g h 3 3 25 a gh 1 (23 mil) 0,7 Drill (27.5 mil) finished hole = 0.6 mm ±0.05 1,5 ERmet ZD 2,5 ERmet ZD 0,65 (25 mil) 0,25 (10 mil) 22,5 16,5 10 2 3 1 2 3 0,15 (12 mil) 0,3 10 1 ERmet 2mm 5+2 ERmet 2 mm 5+2 z a b c d e f z a b c d e f 1,15 (45 mil) 2 depends from manufacturer and size of the Backplane 25,4 2 Backplane Layout 3 Pair Additional GND-holes for improved RF-characteristics in pair a-b Slot 1 Slot 2 2 2 a b c d e f z a b c d e f 2 z ERmet 2 mm 5+2 2 ERmet 2 mm 5+2 25 b c ab d cd e f ef a 1 b ab c d e cd f 3 3 25 a ef 1 (23 mil) 0,7 Drill (27.5 mil) finished hole = 0.6 mm ±0.05 0,25 (10 mil) 1,5 ERmet ZD 2,5 ERmet ZD 0,65 (25 mil) 22,5 12 10 3 1 2 0,15 3 2 1 (12 mil) 0,3 10 ERmet 2mm 5+2 ERmet 2 mm 5+2 z a b c d e f z a b c d e f 1,15 (45 mil) 2 depends from manufacturer and size of the Backplane 20,32 2 8 www.ERNI.com/contact/ 01/05 Edition 1 All dimensions in mm Backplane Layout 2 Pair Additional GND-holes for improved RF-characteristics in pair a-b Slot 1 Slot 2 2 2 a b c d e f z a b c d e f 2 z ERmet 2 mm 5+2 2 ERmet 2 mm 5+2 25 b c ab d a cd 1 b ab c d 3 3 25 a cd 1 (23 mil) ERmet ZD 2,5 0,15 0,3 (12 mil) ERmet ZD 0,7 Drill (27.5 mil) finished hole = 0.6 mm ±0.05 0,25 (10 mil) 1,5 0,65 (25 mil) 22,5 7,5 10 3 3 10 1 2 2 1 ERmet 2mm 5+2 ERmet 2 mm 5+2 z a b c d e f z a b c d e f 1,15 (45 mil) 2 depends from manufacturer and size of the Backplane 15,24 2 Daughtercard Layout 4 Pair 22,5 2,5 3 3 ERmet 2mm 5+2 ERmet ZD ERmet 2mm 8+2 1 10 1 a b b ab c c d d e cd f e g f h 10 c 16,5 2 d e z/f ef 2 10,5 b a 1,75 4,5 1,5 a 1,5 1 25 1,5 Additional GND-holes for improved RF-characteristics in pair a-b z/i g 2 h gh 0,3 (12 mil) 1,05 (41 mil) depends from manufacturer and board size (6 mil) 0,15 0,5 (20 mil) 0,7 Drill (27.5 mil) 0,25 finished hole = 0.6 mm ± 0.05 (23 mil) (10 mil) 9 www.ERNI.com/contact/ 01/05 Edition 1 Daughtercard Layout 3 Pair 22,5 2,5 3 3 ERmet 2mm 5+2 ERmet ZD 25 ERmet 2mm 8+2 1 10 1 b a a b b ab c c d d e cd f e g f h 12 10 c d 10,5 4,5 1,5 a 1,5 1 1,5 Additional GND-holes for improved RF-characteristics in pair a-b z/f ef 2 1,75 2 e z/i 2 1,05 (41 mil) 0,3 (12 mil) depends from manufacturer and board size (6 mil) 0,5 0,15 (20 mil) 0,7 Drill (27.5 mil) finished hole = 0.6 mm ± 0.05 (23 mil) 0,25 (10 mil) Daughtercard Layout 2 Pair 22,5 2,5 3 3 ERmet 2mm 5+2 ERmet ZD ERmet 2mm 8+2 1 10 1 7,5 b 10 c d a a b b ab c c d d e cd f 10,5 4,5 1,5 a 1,5 1 e g z/f h 2 z/i 0,3 (12 mil) 2 (6 mil) 1,05 (41 mil) 0,15 depends from manufacturer and board size 0,5 (20 mil) 0,7 Drill (27.5 mil) finished hole = 0.6 mm ± 0.05 (23 mil) 0,25 (10 mil) All dimensions in mm 10 www.ERNI.com/contact/ 01/05 Edition 1 1,75 1,5 25 2 Additional GND-holes for improved RF-characteristics in pair a-b Plated Through-Holes for Pressfit Terminals All ERmet ZD, ERmet 5+2, ERmet 8+2 and ERmet Power Module pressfit terminals share the same plated through-hole requirements. These pressfit terminals have been used successfully with reflowed tin-lead, plated tin-lead, immersion tin, organic coatings over bare copper and immersion gold hole plating regimes. The hole recommendations and press in force information shown in this catalog are for reflowed tinlead and plated tin-lead. Additional test data for other hole plating regimes are available through customer service. 0,7 Durchmesser des metallisierten Loches Diameter of finished plated-through hole 0,6 0,02 Bohrungsdurchmesser des Loches Diameter of drilled hole 0,05 min. 0,05 Restringbreite Restring width max. 15 µm Sn min. 25 µm Cu Antipad Size Y F E X D ,2 R0 B 2,5 A C 1,5 Drawing shows one differential track pair A = trackwidth D = plated hole X x Y = antipad size B = space between tracks E = drill hole C = space F = pad diameter The table below shows two examples for the antipad size No. of Track-Pairs Pad-Diameter F Antipad Size X x Y Space C Trackwidth A Space between Tracks B 2 1.0mm 1.3 x 2.8mm 0.075mm* 0.15mm 0.15mm 1 1.0mm 1.4 x 2.9mm 0.1mm* 0.25mm 0.4mm * overlapping is necessary because of impedance control Note: To improve the high speed characteristics, remove all pads on unconnected layers! Smaller padsizes also improves the electrical characteristics! Antipad size as large as possible also improves the electrical characteristics! 11 www.ERNI.com/contact/ 01/05 Edition 1 Impedance Profiles Measured from the daughtercard side, with Agilent 86100A TDR. Rise time is typically 35ps. Row a-b Row c-d 12 www.ERNI.com/contact/ 01/05 Edition 1 Row e-f Row g-h 13 www.ERNI.com/contact/ 01/05 Edition 1 Stubbing Effect Top connection Bottom connection The bottom connection is to prefer, because it don’t cause so much reflection. 14 www.ERNI.com/contact/ 01/05 Edition 1 Measurement Setup for Eye Diagrams The rise time of the bit pattern generator is 40ps. We use a PBRS 2 exp 7-1 signal. Board Materials For the testboards we used the materials Rogers 4350 and Standard FR4 Material Parameters FR4 Rogers 4350 Permitivity Dielectric loss Frequency 4 - 4.5 0.02 1MHz 3.5 0.004 up to 10GHz 15 www.ERNI.com/contact/ 01/05 Edition 1 Board Constructions Edge coupled stripline The traces are designed for 100Ω differential impedance. Copper layer thickness is 35µm for stripline and 18µm for microstrip. The trace width and spacing is for: Layer 1 0.25 / 0.20mm Layer 3 0.25 / 0.27mm Layer 5 0.15 / 0.15mm Layer 13 0.20 / 0.17mm Layer 16 0.25 / 0.20mm The SMA connectors were applied in SMD technology. The Daughtercards thickness is between 2.5 and 3mm. They had the same layer structure without the blind layers. 16 www.ERNI.com/contact/ 01/05 Edition 1 Eye Diagrams Without ERmet ZD Connectors for Different Materials Data rate: 5Gbit/s Trace length: 380mm / 15inch Layer: 13 FR4 Max. eye opening: 46% Rogers Max. eye opening: 66% 17 www.ERNI.com/contact/ 01/05 Edition 1 With ERmet ZD Connectors Data rate: 3.125Gbit/s Trace length: 600mm / 24inch Layer: 13 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: 46% Rogers Max. eye opening: 65% 18 www.ERNI.com/contact/ 01/05 Edition 1 With ERmet ZD Connectors Data rate: 5Gbit/s Trace length: 600mm / 24inch Layer: 13 Antipadsize: 3.0 x 1.3mm FR4 Max. eye opening: 13% Rogers Max. eye opening: 49% 19 www.ERNI.com/contact/ 01/05 Edition 1 With ERmet ZD Connectors “Stubbing Effect” Data rate: 5Gbit/s Trace length: 190mm / 7.5inch Material: Rogers Antipadsize: 3.5 x 1.7mm Layer 13 Max. eye opening: 67% Layer 5 Max. eye opening: 52% 20 www.ERNI.com/contact/ 01/05 Edition 1 With Different Antipadsizes Data rate: 5Gbit/s Trace length: 190mm / 7.5inch Layer: 13 Antipadsize: 3.0 x 1.3mm Max. eye opening: 57% Antipadsize: 3.5 x 1.7mm Max. eye opening: 63% 21 www.ERNI.com/contact/ 01/05 Edition 1 Measurements ERmet ZD Backdrilled Board Constructions Edge coupled stripline The traces are designed for 100Ω differential impedance. Copper layer thickness is 35µm for stripline and 18µm for microstrip. The trace width and spacing is for: Layer 1 0.25 / 0.20mm Layer 3 0.25 / 0.27mm Layer 5 0.15 / 0.15mm Layer 13 0.20 / 0.17mm Layer 16 0.25 / 0.20mm The SMA connectors were applied in SMD technology. The Daughtercards thickness is between 2.5 and 3mm. Backplane and daughtercard has the same layer structure without the blind layers. The via sleeves were backdrilled to a length A of 2.5mm at the backplane, and 2mm on the daughtercard. 22 www.ERNI.com/contact/ 01/05 Edition 1 Eye Diagrams ERmet ZD Connector Backdrilled Data rate: 3.125Gbit/s Trace length: 1000mm / 40inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: 25% Rogers Max. eye opening: 53% 23 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 5Gbit/s Trace length: 1000mm / 40inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: 14% At 5Gbit eye is closed. Rogers Max. eye opening: 34% 24 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 3.125Gbit/s Trace length: 600mm / 24inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: % Rogers Max. eye opening: % 25 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 5Gbit/s Trace length: 600mm / 24inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: % Rogers Max. eye opening: % 26 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 7Gbit/s Trace length: 600mm / 24inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: % Rogers Max. eye opening: % 27 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 5Gbit/s Trace length: 380mm / 15inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: % Rogers Max. eye opening: % 28 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 5Gbit/s Trace length: 190mm / 7.5inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: % Rogers Max. eye opening: % 29 www.ERNI.com/contact/ 01/05 Edition 1 ERmet ZD Connector Backdrilled Data rate: 10Gbit/s Trace length: 190mm / 7.5inch Trace width: 0.25mm / 10mil Layer: 3 Antipadsize: 3.5 x 1.7mm FR4 Max. eye opening: % Rogers Max. eye opening: % 30 www.ERNI.com/contact/ 01/05 Edition 1 Influence of Skin Effect Data rate: 5Gbit/s Trace length: 1000mm / 40inch Material: Rogers Antipadsize: 3.5 x 1.7mm Trace width: 0.15mm / 6mil Max. eye opening: 19% Trace width: 0.25mm / 10mil Max. eye opening: 34% 31 www.ERNI.com/contact/ 01/05 Edition 1 Influence of Skin Effect Data rate: 7Gbit/s Trace length: 1000mm / 40inch Material: Rogers Antipadsize: 3.5 x 1.7mm Trace width: 0.15mm / 6mil Max. eye opening: 4% Trace width: 0.25mm / 10mil Max. eye opening: 19% 32 www.ERNI.com/contact/ 01/05 Edition 1 Spice Model Single pair and multi pair spice models available. Also s-parameter and spectraquest models. 33 www.ERNI.com/contact/ 01/05 Edition 1 Guiding System Layouts Alignment pin kit with base plate Alignment pin kit without base plate Alignment socket kit Layout of daughtercard Backplanelayout Backplanelayout 4,3 0,03 15,4 daughtercard 5,5 0,1 14 7 0,1 10,5 0,2 10,5 component side 0,05 8,5 2,5 +0,05 0,2 backplane 0,05 0,03 3 -0,2 4,3 Backplane daughtercard 3,1 0,03 Ordering Information Backplane versions Description Alignment pin Alignment pin Alignment pin Alignment pin kit kit kit kit without base plate without base plate with base plate with base plate PCB Thickness 3.2 – 5 mm 6 – 8 mm 3.2 – 5 mm 6 – 8 mm Part Number 144370 144371 144131 144132 PCB Thickness min. 1.5 mm min. 3 mm Part Number 144127 144128 Daughtercard versions Description Alignment socket kit Alignment socket kit 34 www.ERNI.com/contact/ 01/05 Edition 1