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Patent Searching and Data


Title:
COMPARATOR AND LOW-POWER OSCILLATOR
Document Type and Number:
WIPO Patent Application WO/2017/107301
Kind Code:
A1
Abstract:
The present invention discloses a comparator and a low-power oscillator, wherein the comparator comprises a current mirror module, a comparing module and a buffer output module; and the low-power oscillator comprises a capacitor, a current bias module, a switching module and the comparator. The comparing module comprises a positive input terminal, a first negative input terminal and a second negative input terminal, and the capacitor is connected to the positive input terminal of the comparator. When a capacitor voltage is less than a low threshold voltage at the first negative input terminal of the comparator, the comparator outputs a low voltage level to the switching module, and the switching module controls the current bias module to charge the capacitor; when the voltage of the capacitor is greater than a high threshold voltage at the second negative input terminal of the comparator, the comparator outputs a high voltage level to the switching module, and the switching module controls the current bias module to discharge the capacitor, thereby realizing periodic charging and discharging of the capacitor by using a single comparator, and outputting oscillation signals and reducing the number of comparators, thus simplifying the structure of circuit and lowering power consumption and product costs of the circuit.

Inventors:
ZUO SHIJUN (CN)
YANG ZHICHANG (CN)
YANG XIAOJUN (CN)
Application Number:
PCT/CN2016/074303
Publication Date:
June 29, 2017
Filing Date:
February 23, 2016
Export Citation:
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Assignee:
SHENZHEN SKYWORTH-RGB ELECTRONIC CO LTD (CN)
SHENZHEN SKYWORTH SEMICONDUCTOR DESIGN CENTER CO LTD (CN)
International Classes:
H03K4/501
Foreign References:
CN101667048A2010-03-10
CN101548466A2009-09-30
CN101093983A2007-12-26
CN103888137A2014-06-25
CN101847981A2010-09-29
JP2001345682A2001-12-14
US7586336B22009-09-08
Attorney, Agent or Firm:
JOHNSON INTELLECTUAL PROPERTY AGENCY (SHENZHEN) (CN)
深圳市君胜知识产权代理事务所 (CN)
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