发明授权
US08575970B2 Track and hold circuit and related receiving device with track and hold circuit employed therein
有权
跟踪和保持电路及其中使用的跟踪和保持电路的相关接收设备
- 专利标题： Track and hold circuit and related receiving device with track and hold circuit employed therein
- 专利标题（中）： 跟踪和保持电路及其中使用的跟踪和保持电路的相关接收设备
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申请号： US12695164申请日： 2010-01-28
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公开(公告)号： US08575970B2公开(公告)日： 2013-11-05
- 发明人: Hung-Chieh Tsai , Yu-Hsin Lin , Chi-Lun Lo , Jong-Woei Chen
- 申请人： Hung-Chieh Tsai , Yu-Hsin Lin , Chi-Lun Lo , Jong-Woei Chen
- 申请人地址： TW Science-Based Industrial Park, Hsin-Chu
- 专利权人： Mediatek Inc.
- 当前专利权人： Mediatek Inc.
- 当前专利权人地址： TW Science-Based Industrial Park, Hsin-Chu
- 代理商 Winston Hsu; Scott Margo
- 主分类号： H03K17/00
- IPC分类号： H03K17/00
摘要：
An operational circuit includes: a gain control circuit arranged to provide a gain value upon an input signal according to a set of control signals, wherein the gain control circuit includes a first resistor-based network and a second resistor-based network; an operational amplifier coupled to the gain control circuit and arranged to generate an output signal according to the input signal and the gain value; and a first capacitor coupled to the operational amplifier and arranged to hold the output signal between a first input terminal and a first output terminal of the operational amplifier, wherein when the operational circuit is operating, a first terminal of the first capacitor is consistently coupled to the first input terminal of the operational amplifier, and a second terminal of the first capacitor is consistently coupled to the first output terminal of the operational amplifier.
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