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:
Jun. 09, 2015
Filed:
Aug. 02, 2011
Germano Nicollini, Piacenza, IT;
Federico Guanziroli, Monza e Brianza, IT;
Massimo Orio, Monza e Brianza, IT;
Carlo Pinna, Milan, IT;
Germano Nicollini, Piacenza, IT;
Federico Guanziroli, Monza e Brianza, IT;
Massimo Orio, Monza e Brianza, IT;
Carlo Pinna, Milan, IT;
ST-ERICSSON SA, Plan-les-Ouates, CH;
Abstract
The invention relates to an electronic integrated amplifier for driving an acoustic transducer. The amplifier comprises two differential input terminals to receive an input signal and a first and a second output terminal to provide an output signal to the transducer. In addition, the amplifier comprises an operational amplifier having an input end including differential inputs and an output end operatively associated with the first and second output terminals. A pair of input resistors connect the two differential input terminals to two intermediate terminals, respectively. A pair of feedback resistors connect the first and second output terminals to the two intermediate terminals, respectively. The integrated amplifier also comprises means for high-pass filtering the input signal. Such filtering means is characterized in that it comprises an input element interposed between said intermediate terminals and the input end of the operational amplifier, and a feedback element connected between the input end and the output end of the same operational amplifier.