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Analog-to-digital conversion circuit and electronic equipment

An analog-to-digital conversion circuit and circuit technology, applied in the direction of analog-to-digital converters, etc., can solve the problem that the analog-to-digital converter is difficult to meet application requirements, and achieve the effects of high-precision analog-to-digital conversion, area reduction, and area reduction

Pending Publication Date: 2022-04-12
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

In this regard, traditional analog-to-digital converters have been difficult to meet the application requirements

Method used

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  • Analog-to-digital conversion circuit and electronic equipment
  • Analog-to-digital conversion circuit and electronic equipment
  • Analog-to-digital conversion circuit and electronic equipment

Examples

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Embodiment Construction

[0034] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0035] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0036] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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PUM

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Abstract

The invention relates to an analog-to-digital conversion circuit and electronic equipment, the analog-to-digital conversion circuit comprises a first conversion unit, a second conversion unit and a signal processing unit, the first conversion unit is used for performing coarse quantization on a first analog signal to obtain a first digital signal; the second conversion unit is used for performing fine quantization on the quantization residual error part of the first analog signal to obtain a second digital signal; the signal processing unit is used for obtaining a third digital signal according to the first digital signal and the second digital signal, wherein the third digital signal is a digital signal corresponding to the first analog signal; wherein the first conversion unit and the second conversion unit comprise at least one multiplexing module and do not comprise amplifiers and / or sampling capacitors which work in a closed loop mode. According to the analog-to-digital conversion circuit disclosed by the embodiment of the invention, low-speed and high-precision analog-to-digital conversion can be realized under an advanced process, and the area of the circuit is reduced.

Description

technical field [0001] The present disclosure relates to the field of integrated circuits, in particular to an analog-to-digital conversion circuit and electronic equipment. Background technique [0002] An analog to digital converter (ADC) is an electronic system that converts an analog signal into a digital signal, usually implemented with an integrated circuit (chip). The performance of the analog-to-digital converter is mainly reflected in four aspects: speed (determined by sampling rate or bandwidth), accuracy (determined by effective number of bits or signal-to-noise ratio), power consumption, and cost (determined by circuit area or chip area) . Among them, low-speed (sampling rate<100KHz), high-precision (effective number of digits>16) analog-to-digital converters are mainly used in precision data measurement, sensor data acquisition, audio signal acquisition and other scenarios, and are often integrated into a large SoC to reduce cost. For example, many mobi...

Claims

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Application Information

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IPC IPC(8): H03M1/12
Inventor 孙楠揭路
Owner TSINGHUA UNIV
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