DocumentCode
2666623
Title
A low-power delta-sigma modulator using dynamic-source-follower integrators
Author
Yaguchi, Ryoto ; Adachi, Fumiyuki ; Waho, Takao
Author_Institution
Dept. of Electr. & Electron. Eng., Sophia Univ., Tokyo, Japan
fYear
2010
fDate
12-15 Dec. 2010
Firstpage
551
Lastpage
554
Abstract
A novel low-power switched-capacitor integrator based on dynamic-source-follower amplifiers is proposed and applied to a 2nd-order ΔΣ modulator. Circuit simulation assuming 0.18-μm CMOS technology shows that the present integrator can drastically reduce the power dissipation compared with conventional op-amp-based integrators. A figure-of-merit (FOM) of 0.172 pJ/conv·step has been predicted with a bandwidth and an SNDR of 20 kHz and 73.8dB, respectively.
Keywords
CMOS digital integrated circuits; circuit simulation; delta-sigma modulation; low-power electronics; operational amplifiers; switched capacitor networks; 2nd-order ΔΣ modulator; CMOS technology; circuit simulation; dynamic-source-follower amplifiers; dynamic-source-follower integrators; figure-of-merit; low-power delta-sigma modulator; op-amp-based integrators; size 0.18 mum; switched-capacitor integrator; Bandwidth; Switches; analog-todigital converter; delta-sigma modulator; integrator; switched-capacitor;
fLanguage
English
Publisher
ieee
Conference_Titel
Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on
Conference_Location
Athens
Print_ISBN
978-1-4244-8155-2
Type
conf
DOI
10.1109/ICECS.2010.5724571
Filename
5724571
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