Reference circuit with curvature correction using additional complementary to temperature component
US8710901B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 2012 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Oct 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/223
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reference circuit comprises a first proportional to temperature component providing a first quantity exhibiting a first type of variation as a function of temperature, a first complementary to temperature component providing a second quantity exhibiting a second type of variation as a function of temperature that is complementary to the first type of variation, and curvature correction circuitry. An output of the reference circuit provides a reference signal generated based on a combination of the first and second quantities. The curvature correction circuitry is coupled to the reference circuit output and comprises at least one additional complementary to temperature component. The curvature correction circuitry adjusts the reference signal in a feedback arrangement to compensate for a temperature response bowing effect attributable to combining the first and second quantities. The reference circuit may be implemented in a disk-based storage device for use in fly height control or other control functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.