Patent · US Expired

Charge-controlled integrating successive-approximation analog-to-digital converter

US5206650A · kind A · utility

7Cited by
4References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 5, 1991
Grant dateApr 27, 1993
Priority date
Expiry dateSep 5, 2011

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH03M1/38
  • WIPO fieldBasic communication processes
  • WIPO sectorElectrical engineering

Abstract

A charge-controlled integrating successive-approximation analog-to-digital converter first stores a charge proportional to an unknown voltage in a manner similar to a dual-slope integrating ADC, and thereafter a successive-approximation binary search sequence algorithm is applied to the integrator to determine digital bits representative of the unknown voltage. The result is a relatively simple and inexpensive ADC having high resolution and accuracy, and comparatively fast conversion rates, and exhibiting low power consumption, high noise rejection, and multiple-speed versatility. The preferred embodiment described is a 16-bit ADC with less than 20 millisecond conversion time.

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