Title: A 1-V 50-MHz pseudodifferential OTA with compensation of the mobility reduction
Authors: Lo, Tien-Yu
Hung, Chung-Chih
電信工程研究所
Institute of Communications Engineering
Keywords: low supply voltage;operational transconductance amplifier (OTA);strong inversion region;subthreshold region;transconductance tuning
Issue Date: 1-Dec-2007
Abstract: This brief presents a high-linearity operational transconductance amplifier (OTA) based on pseudodifferential structures. The linearity is improved by mobility compensation techniques as the device size is scaled down to achieve high speed operation. Transconductance tuning could be achieved by a MOS operating in the linear region. The OTA fabricated in the 0.18-mu m CMOS process occupies a small area of 4.5 X 10(-3) mm(2). The measured third-order intermodulation (IM3) distortion with a 400 mV(pp) differential input under 1-V power supply voltage remains below -52 dB for frequency up to 50 MHz. The static power consumption is 2.5 mW. Experimental results demonstrate the agreement with theoretical analyses.
URI: http://dx.doi.org/10.1109/TCSII.2007.907559
http://hdl.handle.net/11536/10036
ISSN: 1549-7747
DOI: 10.1109/TCSII.2007.907559
Journal: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
Volume: 54
Issue: 12
Begin Page: 1047
End Page: 1051
Appears in Collections:Articles


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