Constant current and voltage generator
US7675353B1 · kind B1 · utility
8Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2005 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Dec 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/30
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A compact constant current generator that can operate with a positive supply voltage of 1.22 V (or lower) and minimize noise is provided. The constant current generator can include a bandgap reference circuit and a single gain stage. Notably, the bandgap reference circuit can advantageously generate differential node voltages. The gain stage can amplify those differential node voltages and generate a constant current having a temperature coefficient substantially equal to zero. Advantageously, this single gain stage can minimize the number of components, thereby resulting in a compact and efficient current generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.