both the conductor and dielectric.
For example, proprietary co-extrusion
manufacturing techniques allow the
dielectric between two twinax cores to be
carefully controlled to provide a constant
impedance.
The two internal cores of the twinax
cable are carefully aligned to provide
near-perfect balancing of differential
signals, which offers ultra low skew.
Thus, twinax cables allow high-speed
differential signals to traverse greater
distances than those using PCBs. Just
to put into perspective the accuracy and
control offered by Samtec's twinax cable
technology, years of materials science,
material selection, and manufacturing
controls allow Samtec to confirm ultra
low skew at 3.5 ps/m with a six-sigma
confidence.
Currently, Samtec Eye Speed twinax
cable technology supports 112 Gbps
PAM4 signal speeds, but work is currently
underway to support the next generation
of high-speed differential signals that will
likely exceed 224 Gbps PAM4.
C h a p t e r 4 | I n t r o d u c i n g S a m t e c 's U l t r a L o w S ke w Tw i n a x C a b l e Te c h n o l o g y
Samtec's proprietary coextruded
Eye Speed twinax cable technology
not only allows us to control the
conductor in twinax cables, but
we can also control the dielectric
material to ensure that both
conductors are properly matched
and spaced to offer the lowest
skew possible."
Shashi Chuganey
Raw Cable Engineering Manager, Samtec
17
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