Discrete threshold voltage comparator with zero static power consumption

Abstract

The invention discloses a discrete threshold voltage comparator with zero static power consumption. The discrete threshold voltage comparator comprises a first transistor and a plurality of parallel threshold value adjustment branches, wherein each threshold value adjustment branch is connected with the first transistor and a digital enable bit of the voltage comparator, and each threshold value adjustment branch adjusts a threshold voltage of the voltage comparator according to a digital control signal received by the digital enable bit. According to the discrete threshold voltage comparator , the plurality of parallel threshold value adjustment branches are arranged in the voltage comparator, and the threshold voltage of the voltage comparator is adjusted based on the digital control signal received by the digital enable bit, thus the digital control of the threshold voltage of the voltage comparator is realized; and since the voltage comparator utilizes digital control for adjusting the threshold voltage, the threshold voltage is eliminated, the discrete threshold voltage comparator with zero static power consumption and adjustable threshold voltage values is implemented, reset operation is 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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