Title:
ANALOG/DIGITAL CONVERTER AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/039859
Kind Code:
A1
Abstract:
Provided is a digital calibration type analog/digital converter formed by a main analog/digital converter and a reference analog/digital converter and having a high sample rate and a high resolution. The converter can reduce the power consumption and eliminate the need of a sample and hold circuit at the front end. For this, the converter compensates the affect of the skew between the sampling clocks of the main analog/digital converter and the reference analog/digital converter by post calibration by a skew correction unit.
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Inventors:
OSHIMA TAKASHI (JP)
TAKAHASHI TOMOMI (JP)
TAKAHASHI TOMOMI (JP)
Application Number:
PCT/JP2009/067044
Publication Date:
April 07, 2011
Filing Date:
September 30, 2009
Export Citation:
Assignee:
HITACHI LTD (JP)
OSHIMA TAKASHI (JP)
TAKAHASHI TOMOMI (JP)
OSHIMA TAKASHI (JP)
TAKAHASHI TOMOMI (JP)
International Classes:
H03M1/10; H03M1/12
Foreign References:
| JP2008011189A | 2008-01-17 |
Other References:
Y. CHIU ET AL.: "Least Mean Square Adaptive Digital Background Calibration of Pipelined Analog-to-Digital Converters", IEEE TRANS. ON CIRCUITS AND SYSTEMS, vol. 51, no. 1, January 2004 (2004-01-01), pages 38 - 46, XP011105422, DOI: doi:10.1109/TCSI.2003.821306
TAKASHI OSHIMA ET AL.: "Pipeline-gata ADC no Kosoku Digital Background Calibration", TECHNICAL REPORT OF IEICE, vol. 106, no. 548, 8 March 2007 (2007-03-08), pages 115 - 120
TAKASHI OSHIMA ET AL.: "Pipeline-gata ADC no Kosoku Digital Background Calibration", TECHNICAL REPORT OF IEICE, vol. 106, no. 548, 8 March 2007 (2007-03-08), pages 115 - 120
Attorney, Agent or Firm:
TSUTSUI, YAMATO (JP)
Tsutsui Daiwa (JP)
Tsutsui Daiwa (JP)
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