Method and system for precise current matching in deep sub-micron technology
US8093952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2006 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | May 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45476
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Aspects of a method and system for precise current matching in deep sub-micron technology may include adjusting a current mirror to compensate for MOSFET gate leakage currents by using feedback circuits. The feedback circuits may be implemented from active components to create active feedback circuits. If the reference current to be mirrored is noisy, a smoothing effect may be achieved by introducing a low-pass filter coupled to the current mirror design. The active feedback may comprise amplifiers, which may comprise one or more amplifier stages. The amplifier may amplify either a bias voltage error or a bias current error. Furthermore, a transimpedance amplifier may be utilized in the feedback loop. The output bias current of the current mirror may be stabilized dynamically during adjusting. Multiple current sources may be utilized in the current mirrors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.