Title :
Low-voltage fully-differential CMOS switched-current filters
Author :
Zele, Rajesh H. ; Allstot, David J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
A 3.3-V fully differential switched-current filtering technique based on current-copier principles is presented. A five-pole lowpass filter has been integrated using the MOSIS standard 1.2-μm CMOS n-well technology. Experimental results show that the filter response is accurate for sampling frequencies up to 5 MHz. Measured dynamic range is about 65 dB, and power dissipation is 10 mW per pole. An important feature of this approach is that a designer can optimize circuit performance by optimizing the well-known folded-cascode operational amplifier designs
Keywords :
switched filters; 1.2 micron; 3.3 V; 5 MHz; CMOS switched-current filters; MOSIS standard; circuit performance optimisation; current-copier; five-pole lowpass filter; folded-cascode operational amplifier; fully differential; low voltage; CMOS technology; Design optimization; Dynamic range; Filtering; Filters; Frequency; Integrated circuit measurements; Integrated circuit technology; Power measurement; Sampling methods;
Conference_Titel :
Custom Integrated Circuits Conference, 1993., Proceedings of the IEEE 1993
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0826-3
DOI :
10.1109/CICC.1993.590572
