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:
Dec. 24, 2002
Filed:
Feb. 04, 2002
Peter Laaser, Munich, DE;
Infineon Technologies AG, Munich, DE;
Abstract
Sigma-delta A/D converter having at least one analog signal input ( ) for applying an analog input signal, a subtraction element ( ) having a plurality of capacitors ( ) for sampling the input signal during a sampling phase, it being possible during an integration phase to switch the capacitors ( ) to reference voltage sources ( ) depending on control signals, an integrator ( ) for integrating the output signal of the subtraction element ( ) during the integration phase, a quantizer ( ) for analog-to-digital conversion of the output signal of the integrator ( ) for outputting a digitized output signal to a digital signal output ( ), and having a control logic element ( ) for generating the control signals in such a way that the current load of the reference voltage sources ( ) is minimized during the integration phase.