Analog-digital conversion circuit based on memristor

Abstract

The invention relates to the field of semiconductor integrated circuits, and discloses a novel analog-digital conversion circuit based on a memristor. The analog-digital conversion circuit based on the memristor is high in precision, low in power consumption and small in chip area occupation. The analog-digital conversion circuit based on the memristor comprises a voltage-controlled oscillator, a state control circuit, a frequency comparison circuit and an output circuit. The voltage-controlled oscillator is used for conversing input analog voltage into periodic alternative current signal frequency to indicate an electric signal, and the electric signal is used for programming the frequency comparison circuit. The state control circuit is used for controlling programming, state reading and the reset operation of the frequency comparison circuit according to a control time sequence. The frequency comparison circuit is used for converting the frequency of the periodic alternative current signal output by the voltage-controlled oscillator into a resistance value of the memristor to indicate a digital signal. The output circuit is used for outputting the digital signal which is converted by the frequency comparison circuit under the control of the state control circuit. The analog-digital conversion circuit based on the memristor is suitable for being used for converting analog signals to digital signals.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuits, in particular to an analog-to-digital conversion circuit based on a memristive device, which is used for converting analog signals to digital signals. Background technique [0002] An analog-to-digital converter (ADC) is a circuit that converts an analog signal into a corresponding digital signal. Today's analog electronic technology and its devices are becoming more and more perfect, and digital technology and computer software are changing with each passing day. As a bridge for information exchange between the analog and digital fields, analog-to-digital conversion technology is widely used in various fields of engineering technology. It enables detection technology, Smart instruments and meters, computer measurement and control technology, etc. have undergone new changes. [0003] Any analog-to-digital converter includes three basic functions: sampling, quantization, and codin...

AI Technical Summary

Problems solved by technology

At the same time, the higher the resolution of the ADC, the longer the conversion time required and the lower the conversion rate, so the resolution and conversion rate of the ADC are always mutually restricted.

Therefore, it is necessary to take into account high speed while developing high-resolution ADC, and high-resolution while developing high-speed ADC. On this basis, power consumption, volume, portability, multi-function, and compatibility with computers and communication networks must also be considered. issues such as characteristics and special requirements in the application field, which also makes the structure and classification of ADC intricate

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