Method and system for ESD protection of balanced circuit board lines
First Claim
Patent Images
1. A printed wiring board (PWB), comprising:
- at least one pair of balanced signal lines defining a pitch; and
at least one array of electrostatic discharge (ESD) devices electrically connecting each of the balanced signal lines to ground, the array conforming to the pitch.
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Accused Products
Abstract
An array of electrostatic discharge (ESD) devices conforms to the pitch defined by balanced signal lines on a printed wiring board (PWB) so that the array does not unduly affect the design impedance of the balanced lines.
12 Citations
19 Claims
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1. A printed wiring board (PWB), comprising:
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at least one pair of balanced signal lines defining a pitch; and
at least one array of electrostatic discharge (ESD) devices electrically connecting each of the balanced signal lines to ground, the array conforming to the pitch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrostatic discharge (ESD) device apparatus for a printed wiring board (PWB) having at least one pair of balanced signal lines, comprising:
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plural ESD devices, one for each line in a pair of related balanced signal lines sought to be protected; and
plural traces, each trace respectively connected an ESD device, the balanced signal lines defining a pitch and the traces defining a pitch substantially equal to the pitch defined by the balanced signal lines. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A system, comprising:
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at least one printed wiring board (PWB);
balanced signal line means on the PWB for carrying balanced signals; and
electrostatic discharge means operatively engaged with the balanced signal line means for shunting electrostatic surges to ground substantially without altering a design impedance of the balanced signal line means.
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Specification