Semiconductor resistance compensation with enhanced efficiency
US7057545B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2005 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Jun 29, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/209
Abstract
A semiconductor resistor circuit having a controllable resistance associated therewith includes a plurality of resistor segments connected in a series and/or parallel configuration. The resistor circuit further includes a plurality of switches controlling connection of respective ones of the resistor segments to the resistor circuit, to thereby selectively control a resistance of the resistor circuit in response to respective control signals presented to the switches. The resistor circuit is selectively controllable in discrete resistance intervals, the resistance intervals being unequal to one another. The resistor segments have resistance values that are selected such that a percentage resistance variation across each of the respective resistance intervals as a function of process, voltage and/or temperature conditions to which the resistor circuit is subjected is substantially the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.