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Abstract—In this paper, we design a folded cascode operational transconductance amplifier in a standard CMOS process, which has a measured 69-dB dc gain, a 2-MHz bandwidth, and compatible input- and output voltage levels at a 1-V power supply. This is done by a novel current driven bulk (CDB) technique, which reduces the MOST threshold voltage by forcing a constant current though the transistor bulk terminal.We also look at limitations and improvements of this CDB technique.
Index Terms—1-V OTA, CMOS, current driven bulk, ultra-low voltage.
[ 本帖最后由 gmc832002 于 2006-9-19 15:32 编辑 ] |
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