Structure and method for programmable and non-volatile analog signal storage for a precision voltage reference
US6791879B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Sep 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2211/5634
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmable and non-volatile analog signal storage structure and method are disclosed that employ two non-volatile cells which are arranged as a differential transistor pair. The non-volatile transistor at the positive (or non-inverting) terminal of the amplifier is referred to as the reference cell, while the non-volatile transistor on the negative (or inverting) input of the amplifier is referred to as the storage cell. The structure comprises a storage cell and a reference cell that produces a voltage which is independent of temperature and supply voltage variation. Additionally, the circuit structure is capable of operating at low supply voltage levels (<1.5V).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.