High ohmic integrated resistor with improved linearity
US8384157B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2007 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/209
Abstract
An integrated circuit that includes a resistor module with improved linearity is disclosed. The resistor module includes a diffused resistor body of a first conductivity type; a first terminal and a second terminal, each making direct electrical contact with the diffused resistor body; a doped well of a second conductivity type substantially surrounding the diffused resistor body on all but one major surface of the diffused resistor body, the doped well having contact regions; a first amplifier connected to the first terminal and to one contact region of the doped well; and a second amplifier connected to the second terminal and to another contact region of the well, such that the first amplifier and the second amplifier are connected for power supply only to the first terminal and second terminal, respectively. The first and second amplifiers may be unity gain buffer amplifiers or inverting opamps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.