Active distributed programmable line termination for in-circuit automatic test receivers
US5164663A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31924
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for providing receiver termination in automatic test equipment wherein the automatic test equipment is capable of testing a plurality of devices under test. The automatic test equipment has a plurality of receivers each of which is connected to the receiver termination system of the present invention. The system selectively connects each receiver termination to one of a plurality of devices under test. Each of the receiver terminations is connected between one of the automatic test equipment receivers and the analog multiplexor and provides a high reference voltage clamping value for clamping signals appearing on the input to the receiver at the high reference value tailored for the specific device under test. It also provides a low reference voltage for clamping signals appearing on the input of the receiver at a low reference voltage value tailored to the device under test. An analog reference control is connected to each of the plurality of receiver terminations and delivers to each receiver termination high and low reference voltage clamping values tailored for each device under test connected to the receiver termination. A state machine controls the delivery of the hi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.