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AssigneesShenzhen Skyworth-Rgb Electronic Co., Ltd., Shenzhen Skyworth Semiconductor Design Center Co., Ltd.
InventorsShijun ZUO, Zhichang YANG, Xiaojun YANG
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The present invention discloses a comparator and low power consumption oscillator thereof. Wherein, the comparator comprises a current mirror module, a comparison module and a buffering and outputting module, the low power consumption oscillator comprises a capacitor, a current bias module, a switch module and the comparator, the comparison module comprises a positive input end, a first negative input end and a second negative input end, the capacitor connects to the positive input end of the comparator, when a voltage of the capacitor is less than a low threshold voltage of the first negative input end of the comparator, the comparator outputs a low voltage to the switch module, which controls the current bias module to charge the capacitor, when a voltage of the capacitor is greater than a high threshold voltage of the second negative input end of the comparator, the comparator outputs a high voltage to the switch module, which controls the current bias module to discharge the capacitor, thus, through one comparator, a periodic charging and discharging to the capacitor is achieved, and an oscillation signal is output, thus a number of the comparators is reduced, a structure of the circuit is simplified, a power consumption of the circuit and a cost of a product is reduced.
A comparator, wherein, it comprises a current mirror module, a comparison module and a buffering and outputting module, the current mirror module provides a bias current to the comparison module, the comparison module comprises a positive input end, a first negative input end and a second negative input end, the positive input end connects to an external terminal, the first negative input end and the second negative input end input a low threshold voltage and a high threshold voltage, respectively, the comparison module compares a voltage of the positive input end to the low threshold voltage and the high threshold voltage, and outputs a comparison result to the buffering and outputting module, when the voltage of the positive input end is less than the low threshold voltage, the buffering and outputting module outputs a low voltage to the comparison module;
A comparator, wherein, it comprises a current mirror module, a comparison module and a buffering and outputting module, the current mirror module provides a bias current to the comparison module, the comparison module comprises a positive input end, a first negative input end and a second negative input end, the positive input end connects to an external terminal, the first negative input end and the second negative input end input a low threshold voltage and a high threshold voltage, respectively, the comparison module compares a voltage of the positive input end to the low threshold voltage and the high threshold voltage, and outputs a comparison result to the buffering and outputting module, when the voltage of the positive input end is less than the low threshold voltage, the buffering and outputting module outputs a low voltage to the comparison module;
Dependencies are inferred from the claim text.