Fixed termination scheme for differential receiver that compensates for process, voltage, and temperature variations
US6766155B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Mar 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0292
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A novel terminating differential bus receiver with automatic compensation for process, voltage, and temperature variation is presented. A termination circuit is connected internal to the integrated circuit to the input of a differential receiver in parallel with a transmission line connectable to the receiver. Both the termination circuit and the differential receiver are implemented with at least one p-channel transistor and at least one n-channel transistor, such that the p-channel transistors of the termination circuit and receiver and the n-channel transistors of the termination circuit and receiver are ratioed to vary similarly under PVT variation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.