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:
Sep. 14, 1999
Filed:
Sep. 30, 1997
Alan Kramer, Berkeley, CA (US);
Roberto Canegallo, Tortona, IT;
Mauro Chinosi, Monzese, IT;
Giovanni Gozzini, Palazzolo, IT;
Pier Luigi Rolandi, Monleale, IT;
Marco Sabatini, Agrate Brianza, IT;
STMicroelectronics, S.r.l., Agrate Brianza, IT;
Abstract
The present invention relates to a digital-to-analog converter having a plurality of inputs for digital signals, and an output for an analog signal. It also contains a charge integration circuit having an input and an output coupled to the converter output, and a plurality of floating gate MOS transistors corresponding to the plurality of converter inputs, the MOS transistors all having their source and drain terminals coupled together and to the input of the integration circuit, and having control terminals coupleable, under control from the plurality of inputs of digital signals, to different reference voltages having selected fixed values.