Input control circuit for analog device
US9325312B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/102
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An input control circuit that can be used to drive analog switches of analog modules such as an analog-to-digital converter (ADC) enables a sampling switch to receive a higher input voltage than the voltage rating of the devices comprising the sampling switch without risk of damage and without the need for a resistor divider network. The input control circuit and switch both receive an input voltage to be processed and the input control circuit generates a control signal for the switch that is derived from a pre-charged capacitor. The control circuit permits the design and manufacture of high voltage analog modules using low voltage devices, which can save on mask costs without any performance trade-offs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.