Input circuit for receiving a signal at an input on an integrated circuit
US7009420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2004 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Apr 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0298
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An input circuit for receiving a signal at an input on an integrated circuit, particularly a DRAM circuit, and for assessing the signal with respect to a reference voltage is provided. One embodiment provides a termination circuit for setting a termination voltage, wherein the termination circuit includes a first resistor and a second resistor connected in series between a high voltage potential and a low voltage potential, the termination voltage being tapped between the first and second resistors, a first voltage-dependent resistor element having a first resistance gradient connected in parallel with the first resistor and a second voltage-dependent resistor element having a second resistance gradient connected in parallel with the second resistor, wherein the resistance values of the first and second resistor elements are controlled by a control voltage to set the termination voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.