Title :
A 500 MHz CMOS anti-alias filter using feed-forward op-amps with local common-mode feedback
Author :
Harrison, J. ; Weste, N.
Author_Institution :
Dept. of Electron., Macquarie Univ., North Ryde, NSW, Australia
Abstract :
A 500 MHz op-amp-RC filter in a 0.18 /spl mu/m CMOS process achieves an integrator signal swing of 1.73 V/sub pp/ for -40 dB THD and thermal noise of 18 nV//spl radic/Hz. A three-stage op-amp with two feed-forward paths and common-mode feedback local to each stage is used. The op-amp features 8 GHz unity-gain frequency and 40 dB gain at 500 MHz.
Keywords :
CMOS analogue integrated circuits; RC circuits; active filters; circuit feedback; feedforward; operational amplifiers; 0.18 micron; 40 dB; 500 MHz; 8 GHz; CMOS anti-alias filter; feedforward op-amps; local common-mode feedback; op-amp RC filter; three-stage op-amp; Active filters; Communication system control; Dynamic range; Feedback circuits; Feedforward systems; Frequency; Low pass filters; Operational amplifiers; Transfer functions; Tuning;
Conference_Titel :
Solid-State Circuits Conference, 2003. Digest of Technical Papers. ISSCC. 2003 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-7707-9
DOI :
10.1109/ISSCC.2003.1234236
