System for calibrating a time constant of an integrated circuit, and integrated circuit provided with such a system
US8610610B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Feb 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M3/494
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
System and method for calibrating a time constant R0Ci of an integrated electronic current-feedback continuous-time delta sigma analog/digital converter (modulator) having a variable-impedance filter coupled to input of the modulator, an analog input signal Vin of fixed frequency applied to the variable-impedance filter, wherein the analog input signal Vin attenuation engendered by the variable-impedance filter is measured, and the value of a time constant R0Ci in the modulator and value of the impedance of the variable-impedance filter are modified until an attenuation corresponding to the desired attenuation for the integrated electronic circuit modulator is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.