Patent · US Active

SAR ADC

US7965218B2 · kind B2 · utility

15Cited by

5References

9Claims

0Family size

Assignee

TEXAS INSTRUMENTS DEUTSCHLAND GMBH · DE

Inventors

Frank Ohnhaeuser · Stein, DE
Andreas Wickmann · Nuremberg, DE

Key dates

Filing date	Jul 29, 2009
Grant date	Jun 21, 2011
Priority date	—
Expiry date	Aug 28, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH03M1/804
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An electronic device is provided for analog to digital conversion using successive approximation. The device comprises a first ADC stage. The first ADC stage includes a first plurality of capacitors adapted to sample an input voltage, and adapted to be coupled to either a first reference signal level or a second reference signal level. At least one capacitor of the first plurality of capacitors is adapted to be left floating. A control stage is adapted to switch the at least one floating capacitor to the first reference signal level or the second reference signal level in response to an analog to digital conversion decision made by a second ADC stage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.