CN110012677A - 电容式逐次逼近模数转换器 - Google Patents

电容式逐次逼近模数转换器 Download PDF

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Publication number
CN110012677A
CN110012677A CN201780000487.5A CN201780000487A CN110012677A CN 110012677 A CN110012677 A CN 110012677A CN 201780000487 A CN201780000487 A CN 201780000487A CN 110012677 A CN110012677 A CN 110012677A
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Prior art keywords
capacitor
voltage
switch
capacitor device
generation circuit
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CN201780000487.5A
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CN110012677B (zh
Inventor
范硕
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
    • H03M1/462—Details of the control circuitry, e.g. of the successive approximation register
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
    • H03M1/466—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter using switched capacitors
    • H03M1/468—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter using switched capacitors in which the input S/H circuit is merged with the feedback DAC array
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion
    • H03M1/80—Simultaneous conversion using weighted impedances
    • H03M1/802—Simultaneous conversion using weighted impedances using capacitors, e.g. neuron-mos transistors, charge coupled devices
    • H03M1/804—Simultaneous conversion using weighted impedances using capacitors, e.g. neuron-mos transistors, charge coupled devices with charge redistribution

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Analogue/Digital Conversion (AREA)
  • Dc-Dc Converters (AREA)

Abstract

一种电容式逐次逼近模数转换器(100)，该逐次逼近模数转换器包括：第一电容器阵列(101)，包括N个笫一电容器(C11,C12，……，C1N)；笫二电容器阵列(102)，包括N个第二电容器(C21，C22，……，C2N)；电压生成电路(105)，用于生成共模电压(Vcm)、参考电压(Vref)、第一电压(V1)和第二电压(V2)；第一开关(K1)，第二开关(K2)，N个第三开关(K31，K32，……，K3N)，N个第四开关(K41，K42，……，K4N)；比较器(103)，包括第一输入端、第二输入端和输出端，其中该N个第一电容器(C11，C12，……，C1N)的上极板与该第一输入端连接，该N个第二电容器(C21，C22，……，C2N)的上极板与该第二输入端连接；逐次逼近逻辑控制器(104)，连接于该比较器(103)的输出端。上述电容式逐次逼近模数转换器(100)可以利用2N个电容器实现输出N位二进制编码。

Description

PCT国内申请，说明书已公开。

Claims (8)

  1. PCT国内申请，权利要求书已公开。
CN201780000487.5A 2017-05-22 2017-05-22 电容式逐次逼近模数转换器 Active CN110012677B (zh)

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PCT/CN2017/085370 WO2018213992A1 (zh) 2017-05-22 2017-05-22 电容式逐次逼近模数转换器

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EP (1) EP3432475A4 (zh)
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US10461762B1 (en) * 2018-08-01 2019-10-29 Qualcomm Incorporated Successive approximation register analog-to-digital converter chopping
CN110798218B (zh) * 2019-09-12 2023-06-09 西安电子科技大学 一种基于整数权重的非二进制逐次逼近型模数转换器
CN112350728B (zh) * 2020-10-29 2023-12-26 中国科学院上海微系统与信息技术研究所 一种减少电容阵列的逐次逼近型模数转换器及其工作方法
CN112260691B (zh) * 2020-12-08 2021-06-18 深圳市汇顶科技股份有限公司 逐次逼近寄存器型模数转换器及相关芯片及电子装置
CN113612480B (zh) * 2021-06-23 2024-02-06 西安电子科技大学 基于分段式差分电容阵列的逐次逼近型模数转换器
CN113839673B (zh) * 2021-09-14 2023-08-01 无锡英迪芯微电子科技股份有限公司 一种新型数字域自校准逐次逼近模数转换器

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CN112332847A (zh) * 2020-12-07 2021-02-05 东南大学 一种应用于逐次逼近型模数转换器的两电平开关方法
CN112332847B (zh) * 2020-12-07 2024-03-15 东南大学 一种应用于逐次逼近型模数转换器的两电平开关方法

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EP3432475A1 (en) 2019-01-23
EP3432475A4 (en) 2019-05-01
WO2018213992A1 (zh) 2018-11-29
CN110012677B (zh) 2022-07-05
US20190020351A1 (en) 2019-01-17
US10382053B2 (en) 2019-08-13

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