Invention Grant
- Patent Title: Amplifier circuit and method for improving the dynamic range thereof
- Patent Title (中): 放大器电路及其动态范围的改善方法
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Application No.: US13612805Application Date: 2012-09-12
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Publication No.: US08717106B2Publication Date: 2014-05-06
- Inventor: Chi-Yao Yu , Siu-Chuang Ivan Lu , George Chien
- Applicant: Chi-Yao Yu , Siu-Chuang Ivan Lu , George Chien
- Applicant Address: TW Hsin-Chu
- Assignee: Mediatek Inc.
- Current Assignee: Mediatek Inc.
- Current Assignee Address: TW Hsin-Chu
- Agency: McClure, Qualey & Rodack, LLP
- Main IPC: H03F3/193
- IPC: H03F3/193
Abstract:
The invention provides an amplifier circuit. In one embodiment, the amplifier circuit includes a first class-AB amplifier and a second class-AB amplifier. The first class-AB amplifier amplifies an input signal to generate the first output signal. The second class-AB amplifier amplifies the first output signal to generate a final output signal on an output node. When the power of the input signal is greater than a threshold level, the second class-AB amplifier is in a turned-off state during a turned-on duration period of the first class-AB amplifier, and the first class-AB amplifier is in a turned-off state during a turned-on duration period of the second-class AB amplifier.
Public/Granted literature
- US20130187718A1 AMPLIFIER CIRCUIT AND METHOD FOR IMPROVING THE DYNAMIC RANGE THEREOF Public/Granted day:2013-07-25
Information query
IPC分类:
