Switched-capacitor integrator with chopper stabilization performed at the sampling rate
US5477481A · kind A · utility
111Cited by
14References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1994 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Apr 1, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switched-capacitor integrator with chopper stabilization performed at the sampling rate virtually eliminates the flicker noise and any low frequency interference generated by the amplifier. The integrator samples the input and then passes the sampled input to the feedback capacitor during each chopping phase of the amplifier to thereby provide a double-sampled integrator. The output of the integrator is sampled at the end of each cycle of the chopping signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.