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Catalogue Mezzanine High-Speed High-Density Connectors

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MEG-ARRAY® CONNECTOR SYSTEM


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3.1 INTRODUCTION

This section presents differential electrical performance data for the 4, 10 and 14mm MEG-Array® connector stack heights. This data includes impedance, insertion loss, return loss, propagation delay and crosstalk.

3.2 CONNECTOR PERFORMANCE CONFIGURATION

Figure 3-1 shows the configuration used for testing performed with differential pairs. Rows A, C, E and G, as well as Columns 1, 4 and 7 were dedicated to ground. Each of the signal rows included 2 differential pairs. Note that the ground contacts on the odd rows can be used for low speed signals.

COLUMN

ohms

1.5 16 1.7 1.8 19 2

Figure 3-2 4mm stack height @ 70ps

ohms


	12		3	4	5	6	7
A	la		wi	G	G	G	la
B	G	S1	S2	G	S3	S4	G
C	G	G	G	G	G	G	G
D	G	S5	S6	G	S7	S8	G
E	G	G	G	G	G	G	G
F	G	S9	S10	G	S11	S12	G
G							G

Figure 3-3 4mm stack height @ 100ps


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Figure 3-1 Configuration used for testing. Column = Connector Length; Row = Connector Width. Reference Section 5.1 for Length & Width Convention.

3.3.1 DIFFERENTIAL IMPEDANCE

The minimum and maximum connector impedance is determined for different risetimes of the injected step signal. Figures 3-2 thru 3-13 shows the impedance graphically at 70, 100, 150 and 200ps risetimes for each stack height, respectively. Table 3-1 summarizes the data.

ohms

15 1.E 1.7 I.B 1 9 2 2'

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Figure 3-4 4mm stack height @150ps

TABLE 3-1 DIFFERENTIAL IMPEDANCE (ohms)


Stack Height	Min	Max	Rise Time (ps)
4mm	88.94		70
	90.44		100
	91.88		150
	92.92		200
10mm		105.30	70
		104.09	100
		101.39	150
		99.62	200
14mm		114.30	70
		111.63	100
		107.51	150
		104.40	200

ohms

14 1.5

1.6 17 1.E

lis

19 2 31

Figure 3-5 4mm stack height @ 200ps