A Discrete Threshold Voltage Comparator with Zero Static Power Consumption

Abstract

The invention discloses a discrete threshold value voltage comparator with zero static power consumption. The discrete threshold value voltage comparator comprises a first transistor and multiple parallel threshold value regulation branches, wherein each threshold value regulation branch is connected with the first transistor and a digital enable bit of the voltage comparator, each threshold value regulation branch controls the threshold value voltage of the voltage comparator according to the digital control signal received by the digital enable bit. In the voltage comparator, multiple parallel threshold value regulation branches are set, and the threshold value voltage is regulated according to the digital control signal received by the digital enable bit, thereby realizing the digital control of the threshold value voltage of the voltage comparator; since the voltage comparator uses the digital control threshold value voltage regulation, the static power consumption is eliminated, the zero static power consumption discrete threshold voltage comparator with adjustable threshold value voltage digital is realized, the reset operation is further avoided, and the system dead time is eliminated.

Description

technical field [0001] The invention relates to the technical field of analog voltage comparators, in particular to a discrete threshold voltage comparator with zero static power consumption. Background technique [0002] The comparator is the core device of the analog signal processing circuit. Whether it is an accurate sampling circuit or an analog-to-digital converter (Analog-to-Digital Converter, referred to as "ADC"), the technical parameters of the comparator are the key to ensure the overall performance of the system. [0003] In the technical field of analog voltage comparison, high-precision, high-speed comparators use a multi-level signal processing architecture. Among them, the input stage uses multiple amplifiers cascaded to realize fast high-gain amplification of the difference between the input signal and the threshold signal, and the output stage uses a signal latch to realize fast conversion from analog signals to digital signals. Therefore, the traditional ...

AI Technical Summary

Problems solved by technology

Therefore, the traditional voltage comparator needs a high-gain, large-bandwidth amplifier circuit to improve the accuracy and speed of signal comparison, and increasing the gain and bandwidth of the analog amplifier circuit will cause a significant increase in system power consumption, and the traditional voltage comparator requires a DC bias setting, so static power consumption cannot be eliminated

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