ANALOG-DIGITAL CONVERTER CHIP AND RF-IC CHIP USING THE SAME

PROBLEM TO BE SOLVED: To solve the problem that in a wireless receiving circuit of high data rate, a circuit area and current consumption of an analog-digital converter increase. SOLUTION: In a wireless receiving circuit having an analog-digital converter of digital calibration type constituted by a...

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Bibliographic Details
Main Authors OSHIMA TAKASHI, YAMAWAKI DAIZO
Format Patent
LanguageEnglish
Published 11.06.2009
Subjects
BASIC ELECTRONIC CIRCUITRY
CODE CONVERSION IN GENERAL
CODING
DECODING
ELECTRICITY
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Summary:PROBLEM TO BE SOLVED: To solve the problem that in a wireless receiving circuit of high data rate, a circuit area and current consumption of an analog-digital converter increase. SOLUTION: In a wireless receiving circuit having an analog-digital converter of digital calibration type constituted by a plurality of analog-digital converter units, portions about digital calibration are shared, and a result of calibration of one analog-digital converter unit is applied to other analog-digital converter units to appropriately perform each digital calibration of the plural analog-digital converter units. For example, in a wireless receiving circuit having an analog-digital converter of digital calibration type constituted of an analog-digital converter unit of I side and an analog-digital converter unit of Q side, portions about digital calibration are shared, and a calibration result of I side is applied to Q side. COPYRIGHT: (C)2009,JPO&INPIT
Bibliography:Application Number: JP20070300615