Patent · US Active

Digital trimming of SAR ADCs

US8049654B2 · kind B2 · utility

4Cited by

8References

13Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Michael Reinhold · Munich, DE
Frank Ohnhaeuser · Stein, DE
Mikael Badenius · Höchstadt an der Aisch, DE

Key dates

Filing date	Feb 23, 2010
Grant date	Nov 1, 2011
Priority date	—
Expiry date	Feb 23, 2030

Classification

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

Abstract

Successive approximation register (SAR) analog-to-digital converters (ADCs) generally employ capacitive digital-to-analog converters (CDACs) to perform data conversions. In these CDACs, matching of capacitive values is important, and for conventional high resolution SAR ADCs, complex trimming or calibration procedures can be too costly. Here, however, a SAR ADC is provided that performs error correction so as to reduce the overall cost compared to conventional SAR ADCs.

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