Temperature compensated low voltage reference circuit
US7122997B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2005 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Nov 4, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A temperature compensated low voltage reference circuit can be realized with a reduced operating voltage overhead. This is accomplished in several ways including minimizing drain voltage variation at the drains of two inter-connected transistors and implementing a current conveyer in order to adjust the temperature coefficient of an output current or voltage. Various combinations of voltage minimization and temperature coefficient adjustments may be used to design a reference circuit to a circuit designer's preference. A temperature compensated current source may also be created. The temperature compensated current source may be used to provide a wide range of output voltages. All of the reference circuits may be constructed with various types of transistors including DTMOS transistors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.