NDLI: Fully Differential Rail-to-rail Input Opamp With Novel Constant-transconductance Control In 120nm CMOS Technology

Content Provider	IEEE Xplore Digital Library
Author	Yan, W.X. Zimmermann, H.
Copyright Year	2006
Description	Author affiliation: Vienna Univ. of Technol. (Yan, W.X.; Zimmermann, H.)
Abstract	A fully differential operational amplifier featured with rail-to-rail input and output performance, realized by a novel method of constant small- and large-signal behavior control as well as a new symmetrical differential class-AB output is proposed. The small-signal deviation is suppressed within only 1.6%, which is the best result achieved among all the constant behavior rail-to-rail input-stage designs. With suitable compensation, the opamp is able to drive heavy ohmic load down to 100ohm or capacitive load higher than 50pF. Also the total harmonic distortion is reduced owing to the symmetrical push-pull structure for the output stage. With a 1.5V power supply and a capacitive load of 10pF, the low-frequency gain and unity-gain bandwidth of the opamp are 77dB and 4.7MHz, respectively. The chip was fabricated in 120nm digital CMOS technology
Starting Page	294
Ending Page	298
File Size	306500
Page Count	5
File Format	PDF
ISBN	8392263227
DOI	10.1109/MIXDES.2006.1706587
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-22
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	DEPT OF MICROELECTRONICS AND COMP SCIENC
Subject Keyword	Operational amplifiers Integrated circuit technology Rail to rail inputs CMOS analog integrated circuits Rail to rail operation CMOS technology Threshold voltage Differential amplifiers Transconductance Rail to rail amplifiers
Content Type	Text
Resource Type	Article

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