Title :
A novel technique to enhance the open loop gain of CMOS folded cascode OTA
Author :
Ge, Lei ; El-Masry, Ezz
Author_Institution :
Sch. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada
Abstract :
A modified CMOS folded cascode operational transconductance amplifier (OTA) based on standard digital 0.18 μm CMOS process, capable to work at 1 V relax the design of high gain 1 V OTA. A unique output stage is employed to achieve open loop gain up to 80 dB, unity gain band width GBW=50 MHz, with phase margin of 58°, while consume only 10 μW (biasing circuit excluded) under 1 V power supply.
Keywords :
CMOS analogue integrated circuits; integrated circuit design; operational amplifiers; 0.18 micron; 1 V; 10 muW; 50 MHz; 80 dB; CMOS folded cascode OTA; CMOS process; integrated circuit design; open loop gain; operational transconductance amplifier; Analog circuits; Bandwidth; CMOS process; Design optimization; MOS devices; Mirrors; Operational amplifiers; Performance gain; Photonic band gap; Power supplies;
Conference_Titel :
Circuits and Systems, 2004. NEWCAS 2004. The 2nd Annual IEEE Northeast Workshop on
Print_ISBN :
0-7803-8322-2
DOI :
10.1109/NEWCAS.2004.1359059
