Analog-digital converter and analog-digital conversion method

Abstract

The invention discloses an analog-digital converter and an analog-digital conversion method. The converter comprises a first conversion circuit and a second conversion circuit. The first conversion circuit is used for receiving and converting sampling signals to obtain first digital signals to be output to a digital signal output line, and converting the first digital signals into first analog signals to be output to the second conversion circuit, the digital signals corresponding to the sampling signals have N bits, the digital signals corresponding to the first analog signals and the first digital signals have M bits, N and M are integers larger than zero, and N is larger than M. The second conversion circuit is used for receiving and converting the sampling signals and the first analog signals to obtain second digital signals, and the second digital signals have N-M bits. The analog-digital converter and the analog-digital conversion method have the advantages that power consumption is low, the chip area is small, and the sampling period and sampling speed are balanced.

Description

technical field [0001] The invention relates to the field of digital signal processing, in particular to an analog-to-digital converter and an analog-to-digital conversion method. Background technique [0002] In the era of information digitization, the processing of digital signals is very important. Signals in the real world, such as sound, position, image, optical and electrical signals, etc. are all analog, while the signal form of digital communication is consistent with the signal used by the computer. They are all binary codes, and it is convenient for the computer to store and process digital signals. and switching, etc. Therefore, converting analog signals into digital signals is the basis of digital signal processing. Therefore, the Analog-to-Digital Converter (Analog-to-Digital Converter, ADC) has become the basis of the modern information digital age, and it is also the basis of many high-speed hybrid Circuit-critical blocks for highly integrated digital systems...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an analog-to-digital converter and an analog-to-digital conversion method to solve the defects of excessive power consumption, large chip area, long sampling period and slow sampling speed in the prior art.

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