The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1999
Filed:
Dec. 19, 1997
James G Mittel, Lake Worth, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A sigma delta analog-to-digital converter (100) comprising a second or third order integrator block (105) featuring a feed-forward connection path between the input of the integrator block and an input of at least one of the plurality of integrators (130 or 150). A comparator (180) coupled to the output of the integrator block (105) generates as output a digital value representing a difference between the integrator output signal with respect to a threshold, or in a differential mode implementation, between component signals of a differential signal output by the integrator block (105). A digital sampling element (190) coupled to the output of the comparator (180) samples the output of the comparator (180) in response to a sampling clock signal at a predetermined sampling frequency to generate as output digital signal comprising samples of the digital values output by the comparator (180).