Title :
Self-biased cross-coupled low-cost fully-differential CMOS operational amplifier
Author :
Chen, C.-L. ; Chang, Y.-C.
Author_Institution :
Dept. of Electron. Eng., Kun-Shan Univ. of Technol., Tainan, Taiwan
fDate :
4/28/2005 12:00:00 AM
Abstract :
A low-cost fully-differential operational amplifier (opamp) using a novel self-biased cascode output stage and cross-coupled input stage is proposed. Fabricated in only an 84×67 μm2 area with TSMC 0.35 μm technology, and loaded with more than 100 pF capacitance, the opamp possesses 60 dB DC gain, 3 V/μs slew rate, 7.8 MHz unity-gain bandwidth, and -48 dB total harmonic distortion.
Keywords :
CMOS integrated circuits; harmonic distortion; operational amplifiers; 0.35 micron; 100 pF; 60 dB; 738 MHz; CMOS operational amplifier; TSMC technology; cross-coupled input stage; cross-coupled operational amplifier; fully-differential operational amplifier; harmonic distortion; low-cost operational amplifier; self-biased cascode output stage; self-biased operational amplifier; unity-gain bandwidth;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20057998
