WO2023238498A1 - Circuit analogique - Google Patents

Circuit analogique Download PDF

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Publication number
WO2023238498A1
WO2023238498A1 PCT/JP2023/014588 JP2023014588W WO2023238498A1 WO 2023238498 A1 WO2023238498 A1 WO 2023238498A1 JP 2023014588 W JP2023014588 W JP 2023014588W WO 2023238498 A1 WO2023238498 A1 WO 2023238498A1
Authority
WO
WIPO (PCT)
Prior art keywords
current
power supply
amplifier
supply voltage
output terminal
Prior art date
Application number
PCT/JP2023/014588
Other languages
English (en)
Japanese (ja)
Inventor
英一 中本
信久 小澤
Original Assignee
ソニーセミコンダクタソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ソニーセミコンダクタソリューションズ株式会社 filed Critical ソニーセミコンダクタソリューションズ株式会社
Publication of WO2023238498A1 publication Critical patent/WO2023238498A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
    • 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

Abstract

Le but de la présente invention est de réduire le bruit dans un circuit analogique équipé d'un IDAC.　Ce circuit analogique comprend une unité de génération de courant et un circuit de commutation. L'unité de génération de courant génère un courant différentiel correspondant à des données numériques sur la base d'une tension d'alimentation positive et d'une tension d'alimentation négative. Le circuit de commutation commute la sortie de courant différentiel sur la base des données numériques. Une première borne de sortie externe et une deuxième borne de sortie externe qui délivrent le courant différentiel à l'extérieur peuvent en outre être fournies. Le circuit de commutation peut séparer la sortie de l'unité de génération de courant de la première borne de sortie externe et de la deuxième borne de sortie externe lorsqu'aucune donnée numérique n'est entrée.
PCT/JP2023/014588 2022-06-07 2023-04-10 Circuit analogique WO2023238498A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022092446 2022-06-07
JP2022-092446 2022-06-07

Publications (1)

Publication Number Publication Date
WO2023238498A1 true WO2023238498A1 (fr) 2023-12-14

Family

ID=89117997

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/014588 WO2023238498A1 (fr) 2022-06-07 2023-04-10 Circuit analogique

Country Status (1)

Country Link
WO (1) WO2023238498A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05335838A (ja) * 1992-05-29 1993-12-17 Nec Corp 全差動型アナログ回路
JPH11178005A (ja) * 1997-12-08 1999-07-02 Rohm Co Ltd デジタルビデオエンコーダ
US7733178B1 (en) * 2007-10-24 2010-06-08 Fairchild Semiconductor Corporation High efficiency audio amplifier
JP2015519778A (ja) * 2012-03-28 2015-07-09 日本テキサス・インスツルメンツ株式会社 オーディオ信号を再生するための低ノイズ及び低電力配置
US10009686B1 (en) * 2017-04-17 2018-06-26 Cirrus Logic, Inc. Fully-differential current digital-to-analog converter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05335838A (ja) * 1992-05-29 1993-12-17 Nec Corp 全差動型アナログ回路
JPH11178005A (ja) * 1997-12-08 1999-07-02 Rohm Co Ltd デジタルビデオエンコーダ
US7733178B1 (en) * 2007-10-24 2010-06-08 Fairchild Semiconductor Corporation High efficiency audio amplifier
JP2015519778A (ja) * 2012-03-28 2015-07-09 日本テキサス・インスツルメンツ株式会社 オーディオ信号を再生するための低ノイズ及び低電力配置
US10009686B1 (en) * 2017-04-17 2018-06-26 Cirrus Logic, Inc. Fully-differential current digital-to-analog converter

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