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Analog-digital converter and analog-digital conversion method

An analog-to-digital converter and analog-to-digital conversion circuit technology, which is used in analog-to-digital conversion, code conversion, instruments, etc. The effect of balanced speed, short sampling period and fast sampling speed

Active Publication Date: 2015-01-21
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Analog-digital converter and analog-digital conversion method

Examples

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Embodiment 1

[0021] refer to figure 1 As shown, it is a schematic diagram of an analog-to-digital converter provided by Embodiment 1 of the present invention. The technical solution of this embodiment is suitable for converting input sampling signals to output digital signals based on medium-speed and low-power consumption analog-to-digital converters. In some cases, the sampling signal is any analog signal, typically a voltage signal. Before conversion, a reference voltage can be set, and the sampling signal is within the range of the reference voltage, and the analog-to-digital converter can be implemented in a hardware manner.

[0022] The analog-to-digital converter includes: a first conversion circuit 110 and a second conversion circuit 120 .

[0023] Wherein, the input end of the first conversion circuit 110 is connected to the sampling signal transmission line, the first output end is connected to the digital signal output line, and the second output end is connected to the first i...

Embodiment 2

[0066] refer to Figure 5 , is a schematic flowchart of an analog-to-digital conversion method provided in Embodiment 2 of the present invention. The analog-to-digital conversion method includes:

[0067] Step 310: Receive and convert the sampling signal to obtain a first digital signal and output it, and convert the first digital signal into a first analog signal, wherein the digital signal corresponding to the sampling signal is N bits, and the Both the digital signal corresponding to the first analog signal and the first digital signal are M bits, both N and M are integers greater than 0, and N is greater than M;

[0068] Step 320: Receive and convert the sampling signal and the first analog signal to obtain a second digital signal and output it, wherein the second digital signal is N-M bits.

[0069] Further, receiving and converting the sampling signal to obtain a first digital signal and outputting it, and converting the first digital signal into a first analog signal ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/38
Inventor 不公告发明人
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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