Teradyne, Inc.

Timothy Daniel Lyons

Frank Parrish

Brian Charles Wadell

Vladimir Vayner

Roger Allen Sinsheimer

Brian G Donovan

Brandon E Creager

An example circuit board structure includes: a substrate; and vias that are electrically conductive and that pass through the substrate to enable electrical connection through the circuit board structure. The substrate is thinner, and lengths of the vias are shorter, in first areas of the circuit board structure that deliver first speed signals than in second areas of the circuit board structure that deliver second speed signals and power. The first speed signals have a shorter rise time than the second speed signals.

Pocketed circuit board

An example apparatus for interfacing between automatic test equipment (ATE) and a device under test (DUT) includes: multiple stages arranged in sequence between the ATE and the DUT, where each of the multiple stages includes a driver, at least two of the multiple stages each includes a filter, each filter is arranged between two drivers, and each filter is configured to reduce jitter produced by a preceding driver in a signal transmitted between the ATE and the DUT.

Multi-stage equalization

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Stoughton, MA, United States of America

Timothy Daniel Lyons