Automatic test equipment pin channel with T-coil compensation
US7248035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Jan 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31926
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A passive matching network is connected to an input/output line for an automatic test equipment drive channel to compensate for capacitances associated with a receiver circuit connected to the line, and also an optional current-mode driver circuit. The matching circuit preferably comprises a T-coil circuit that can include a bridging capacitor; separate T-coil circuits can be provided to separately compensate for receiver circuit and current-mode driver circuit capacitances. The driver and receiver circuits can be implemented on a common layer of an integrated circuit, with the T-coil windings implemented in a separate layer of the same integrated circuit that is spaced from the common layer by at least one dielectric layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.