Invention Grant
US08120388B2 Comparator, sample-and-hold circuit, differential amplifier, two-stage amplifier, and analog-to-digital converter
有权
比较器，采样保持电路，差分放大器，两级放大器和模数转换器
- Patent Title: Comparator, sample-and-hold circuit, differential amplifier, two-stage amplifier, and analog-to-digital converter
- Patent Title (中): 比较器，采样保持电路，差分放大器，两级放大器和模数转换器
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Application No.: US11624270Application Date: 2007-01-18
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Publication No.: US08120388B2Publication Date: 2012-02-21
- Inventor: Yasuhide Shimizu , Shigemitsu Murayama , Yukitoshi Yamashita , Junji Toyomura
- Applicant: Yasuhide Shimizu , Shigemitsu Murayama , Yukitoshi Yamashita , Junji Toyomura
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: SNR Denton US LLP
- Priority: JPP2003-105688 20030409
- Main IPC: H03K5/22
- IPC: H03K5/22 ; G11C27/02
Abstract:
A comparator includes a sampling capacitor, a first switching unit which is connected to an input end of the sampling capacitor and which applies an input signal to the input end of the sampling capacitor, a second switching unit which is connected to the input end of the sampling capacitor and which applies a reference signal to the input end of the sampling capacitor, an output transistor connected to an output end of the sampling capacitor in a source follower connection manner or an emitter follower connection manner, and a third switching unit which is connected to an output end of the sampling capacitor and which maintains maintaining a voltage at the output end of the sampling capacitor to be constant. The input signal is compared with the reference signal.
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