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US 2006/0067023 A1Published application
Method and system for ESD protection of balanced circuit board lines
AssigneesSony Corporation, Sony Electronics Inc.
InventorsPeter Shintani, Yoshihisa Tahara
Life of this patent
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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.
Claims19
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.
An electrostatic discharge (ESD) device apparatus for a printed wiring board (PWB) having at least one pair of balanced signal lines, comprising:
- 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.
A system, comprising:
- 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.
1 more element
Dependencies are inferred from the claim text.