Analog front-end circuit capable of use in a sensor system
US11588495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2021 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Jul 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
During a sampling phase, an analog front end circuit connects input of a first sampling capacitor to an analog input signal and input of a second sampling capacitor to a reference signal, and connects first and second hold capacitors to ground. During a partial tracking phase, input of the first sampling capacitor is connected to the reference voltage and the input of the second sampling capacitor is connected to the analog input signal. The first hold capacitor is connected to a first output of a gain amplifier and the second hold capacitor to a second output of the gain amplifier. Output of the first sampling capacitor is coupled to a first input of an amplifier and output of the second sampling capacitor is coupled to a second input of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.