Presentation 2016-12-15
[Poster Presentation] Study of the capacitor ratio adjustment method that takes into account the parasitic capacitance of MOS switch in Capacitor-DAC
Yoshiharu Miyake, Masahiro Sasaki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In recent years, C-DAC (Capacitor Digital to Analog Converter) is often used as a reference voltage source in a successive approximation ADC (Analog to Digital Converter). In general, a C-DAC consists of a MOS switch and a group of capacitors with binary weighted capacitance values. However, the parasitic capacitance that causes an error in the capacitance ratio, and therefore it is necessary to readjust the capacitors’ value one by one from the simulation results. In this study, we analyze the relationship between the W/L ratio of the MOS switch and the capacitance ratio after the adjustment. And then by calculating the coefficient of the relationship, the comprehensive adjustment method of the C-DAC capacitance ratio that considers the parasitic component of the MOS switch will be examined.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) C-DAC / Parasitic capacitance
Paper # ICD2016-63,CPSY2016-69
Date of Issue 2016-12-08 (ICD, CPSY)

Conference Information
Committee ICD / CPSY
Conference Date 2016/12/15(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tokyo Institute of Technology
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Minoru Fujishima(Hiroshima Univ.) / Yasuhiko Nakashima(NAIST)
Vice Chair Hideto Hidaka(Renesas) / Koji Nakano(Hiroshima Univ.) / Hidetsugu Irie(Univ. of Tokyo)
Secretary Hideto Hidaka(Hiroshima Univ.) / Koji Nakano(Univ. of Tokyo) / Hidetsugu Irie(Fujitsu Labs.)
Assistant Takashi Hashimoto(Panasonic) / Masanori Natsui(Tohoku Univ.) / Hiroyuki Ito(Tokyo Inst. of Tech.) / Pham Konkuha(Univ. of Electro-Comm.) / Takeshi Ohkawa(Utsunomiya Univ.) / Shinya Takameda(Hokkaido Univ.)

Paper Information
Registration To Technical Committee on Integrated Circuits and Devices / Technical Committee on Computer Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Poster Presentation] Study of the capacitor ratio adjustment method that takes into account the parasitic capacitance of MOS switch in Capacitor-DAC
Sub Title (in English)
Keyword(1) C-DAC
Keyword(2) Parasitic capacitance
1st Author's Name Yoshiharu Miyake
1st Author's Affiliation Shibaura Institute of Technology(SIT)
2nd Author's Name Masahiro Sasaki
2nd Author's Affiliation Shibaura Institute of Technology(SIT)
Date 2016-12-15
Paper # ICD2016-63,CPSY2016-69
Volume (vol) vol.116
Number (no) ICD-364,CPSY-365
Page pp.pp.45-45(ICD), pp.45-45(CPSY),
#Pages 1
Date of Issue 2016-12-08 (ICD, CPSY)