Invention Grant
- Patent Title: Coupling of speakers with integrated circuit
- Patent Title (中): 扬声器与集成电路耦合
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Application No.: US12713083Application Date: 2010-02-25
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Publication No.: US08787588B2Publication Date: 2014-07-22
- Inventor: Sanjeev Ranganathan , Shyam Somayajula , Srinath Sridharan , Arnold D'Souza , Ramkishore Ganti , Lionel Cimaz
- Applicant: Sanjeev Ranganathan , Shyam Somayajula , Srinath Sridharan , Arnold D'Souza , Ramkishore Ganti , Lionel Cimaz
- Applicant Address: CH Plan-les-Ouates IN New Delhi
- Assignee: ST-Ericsson SA,ST-Ericsson PVT. Ltd.
- Current Assignee: ST-Ericsson SA,ST-Ericsson PVT. Ltd.
- Current Assignee Address: CH Plan-les-Ouates IN New Delhi
- Agency: Howison & Arnott, L.L.P.
- Priority: EP09305181 20090227
- Main IPC: H04R1/10
- IPC: H04R1/10 ; H04R5/033

Abstract:
Systems and methods for a low pin architecture to couple speakers with integrated circuits are disclosed herein. In an implementation, the low pin architecture facilitates in reducing the required pin interfaces to couple a low power speaker, a high power speaker, and earphone speakers with integrated circuits (ICs). For this, the high power speaker can be cross-coupled between the pin interfaces that are coupled to the low power speaker and the earphone speakers. These pin interfaces are driven by corresponding driver circuits. In said implementation, some of the driver circuits can be shared to drive multiple pin interfaces. These shared driver circuits include a combined cascode circuit having a first cascode circuit integrated with a second cascode circuit to reliably and selectively drive one or more of the pin interfaces.
Public/Granted literature
- US20100220868A1 COUPLING OF SPEAKERS WITH INTEGRATED CIRCUIT Public/Granted day:2010-09-02
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