Analog-digital converter

Abstract

The invention discloses an analog-digital converter which comprises a demultiplexer of a grapheme device. The demultiplexer comprises a plurality of graphene channels and a plurality of gates, one ends of the graphene channels are connected to the same end point, the end point is connected with analog input signals, the other ends of the graphene channels are connected with different output ends respectively, all graphene channels are contacted and electrically connected with the gates, and included angles formed by the graphene channels and the gates are different. Due to the fact that incident wave angles of different graphene channels are different, when the analog input signals change, changes of the output end of each graphene channel are different, and accordingly output signals of the graphene channels have different combinations, namely the analog signals can be converted into multi-digit digital signals through the graphene channels. The analog-digital converter is simple in design and high in speed.

Description

technical field [0001] The present invention relates to the field of integrated circuit design, and more specifically relates to an analog-to-digital converter. Background technique [0002] An analog-to-digital converter (A / D Converter, or ADC) is widely used in analog circuits, and is a device that converts an analog signal into a digital signal, that is, a device that converts a continuous variable analog signal into a discrete digital signal. [0003] Such as figure 1 As shown, it is a two-bit voltage analog-to-digital converter. If the reference voltage V is set REF is 1V, then the output signal B 0 B 1 There are four codes of 00, 01, 10, and 11, which represent the corresponding input when the input voltage is 0V-0.25V, 0.26V-0.5V, 0.51V-0.75V, and 0.76V-1V, and are divided into 4 levels of codes , when a V IN When a signal of 0.8V is input, the output data of the converter is 11. [0004] At present, there are many designs of analog-to-digital converters, such a...

AI Technical Summary

Problems solved by technology

[0004] At present, there are many designs of analog-to-digital converters, such as Sigma-delta ADC (Sigma-delta ADC), direct conversion ADC (Direct conversion ADC), pipeline analog-to-digital converter (Pipeline ADC), etc. , the design of these ADCs is usually more complicated, and with the continuous development of science and technology, higher requirements are placed on the performance of integrated circuits, such as speed. The goal

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