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:
Feb. 15, 2005
Filed:
Sep. 09, 2002
Patrick Clement, Bussigny, CH;
Nadim Khlat, Cugnaux, FR;
Daniel B Schwartz, Gold Canyon, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A Multi-Rate Analog-to-Digital Converter () is coupled to a single crystal oscillator () as a reference clock and has at least two separate channels arranged to sample and convert input data at two differing clock rates. Each channel derives a clock signal from the reference clock. Associated with each of the channels is a Sigma-Delta converter () comprising a modulator (), a filter () and a resampler (). The modulator () receives input data and provides a data signal to the filter (), which itself provides a filtered data signal to the associated data resampler. The data resampler resamples the data and provides a digital output signal. As there is sampling in the digital domain the advantages associated with signal processing, speed and low noise injection are obtained. Similarly as the output of the modulator () is in digital form, it can be manipulated and processed readily and with the existing software.