Patent · US Active

Analogue-to-digital converter

US8711020B2 · kind B2 · utility

1Cited by

10References

9Claims

0Family size

Assignee

Nordic Semiconductor ASA · NO

Inventors

Carsten Wulff · Trondheim, NO
Ola Bruset · Trondheim, NO
Werner Luzi · Trondheim, NO

Key dates

Filing date	Feb 14, 2012
Grant date	Apr 29, 2014
Priority date	—
Expiry date	Feb 14, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03M3/456
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An integrated-circuit, continuous-time, sigma-delta analogue-to-digital converter has a single-ended analogue input, a converter reference input, and a ground connection. The converter has a resistor-capacitor integrator arranged to receive the single-ended analogue input. The integrator comprises a differential amplifier. The converter also has a clocked comparator connected to an output from the integrator, and circuitry arranged so that reference inputs to the amplifier and to the comparator can be maintained at a common voltage derived from the converter reference input.

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