Adjustable analogue-digital converter arrangement and method for analogue-to-digital conversion
US8059020B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | May 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/46
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An adjustable analog-digital converter arrangement comprising: an input adapted for receiving an input signal; an analog-digital converter operating by successive approximation, having a signal input coupled with the input, wherein said converter is adapted for converting an analog signal at the signal input into a digital value; an attenuator with an output, wherein an input of said attenuator is coupled to the signal input and is adapted for an amplitude change of signals applied to its input, wherein the amplitude change is controllable by means of a control input, and wherein the attenuator comprises switchable capacitors and forms a part of a first stage of said analog-digital converter; a control circuit having an output coupled to the control input of the attenuator and adapted to initialize, as a function of a comparison of a signal output by the analog-digital converter with a threshold, an automatic adjustment of the attenuation by generating a control signal, and having an output for the output of the control signal that is coupled to the attenuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.