Systems for accurate multiplexing
US9407250B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2010 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Mar 9, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The disclosure presented herein provides example embodiments of systems for accurate multiplexing. The systems and methods presented may be suitable for non-limiting examples of analog to digital conversion with a switched input voltage (for a switched capacitor application) or any circuit with high voltage/high accuracy voltage multiplexing. In an example embodiment, pulsed current sources may be implemented to rapidly turn on and turn off the selected and unselected multiplexer ports while maintaining relatively low power consumption. A Kelvin input port may allow a high voltage input to be accurately sensed by avoiding a voltage drop associated with a selected pass gate p-channel FET channel resistance and parasitic wire resistance. The Kelvin input port biases the gate of a pass FET structure whose body terminals are allowed to remain floating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.