Invention Grant
- Patent Title: Audio switching circuit
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Application No.: US16117862Application Date: 2018-08-30
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Publication No.: US10659037B2Publication Date: 2020-05-19
- Inventor: David Corvino , Javier Alfaro , Carlos A. Garrafa
- Applicant: MOTOROLA SOLUTIONS, INC.
- Applicant Address: US IL Chicago
- Assignee: MOTOROLA SOLUTIONS, INC.
- Current Assignee: MOTOROLA SOLUTIONS, INC.
- Current Assignee Address: US IL Chicago
- Agency: Michael Best & Friedrich LLP
- Main IPC: H03K17/16
- IPC: H03K17/16 ; H04R3/00 ; H03F3/187

Abstract:
Systems and methods for an audio switching circuit. One system includes an audio switching circuit including a first P-channel transistor including a first source terminal, a first gate terminal, and a first drain, a second P-channel transistor including a second source terminal, a second gate terminal, and a second drain terminal, and a control circuit. The second drain terminal is coupled to the first drain terminal. The first P-channel transistor is configured to receive a first audio signal at the first drain terminal. The control circuit is configured to disconnect the first gate terminal from a ground reference, and in response to the presence of the first audio signal, cause a first voltage between the first gate terminal and the first source terminal to be approximately zero and prevent the first audio signal from passing through the first drain terminal.
Public/Granted literature
- US20200076418A1 AUDIO SWITCHING CIRCUIT Public/Granted day:2020-03-05
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