Invention Grant
- Patent Title: Method of preventing abrupt voltage changes at the outputs of a pair of amplifiers and control circuit for a pair of amplifiers self-configuring in a bridge configuration
- Patent Title (中): 用于在桥配置中自配置的一对放大器的一对放大器和控制电路的输出处的突变电压变化的方法
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Application No.: US11022020Application Date: 2004-12-23
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Publication No.: US07230482B2Publication Date: 2007-06-12
- Inventor: Fabio Chelli , Davide Brambilla
- Applicant: Fabio Chelli , Davide Brambilla
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics S.r.l.
- Current Assignee: STMicroelectronics S.r.l.
- Current Assignee Address: IT Agrate Brianza
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Agent Lisa K. Jorgenson
- Priority: EP03425816 20031223
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F1/14 ; H03F3/00
Abstract:
A common mode control circuit reduces abrupt voltage changes at the outputs of a pair of amplifiers which, in turn, reduces EMI and distortions that occur when the correlation between the signals fed to the four channels of an audio system diminishes. The common mode control circuit generates for each amplifier a reference potential that is a saturated replica of the respective differential input signal of the amplifier that saturates when the amplifier switches to a bridge configuration.
Public/Granted literature
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