Invention Grant
- Patent Title: Integrated amplifier for driving acoustic transducers
- Patent Title (中): 用于驱动声学传感器的集成放大器
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Application No.: US13808604Application Date: 2011-08-02
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Publication No.: US09054646B2Publication Date: 2015-06-09
- Inventor: Germano Nicollini , Federico Guanziroli , Massimo Orio , Carlo Pinna
- Applicant: Germano Nicollini , Federico Guanziroli , Massimo Orio , Carlo Pinna
- Applicant Address: CH Plan-les-Ouates
- Assignee: ST-ERICSSON SA
- Current Assignee: ST-ERICSSON SA
- Current Assignee Address: CH Plan-les-Ouates
- Agency: Patent Portfolio Builders PLLC
- Priority: EP10172369 20100810
- International Application: PCT/EP2011/063263 WO 20110802
- International Announcement: WO2012/019940 WO 20120216
- Main IPC: H03F3/181
- IPC: H03F3/181 ; H03F1/30 ; H03F1/34 ; H03F3/187 ; H03F3/213 ; H03F3/45 ; H03H19/00

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.
Public/Granted literature
- US20130208922A1 Integrated Amplifier for Driving Acoustic Transducers Public/Granted day:2013-08-15
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