Title :
Low-voltage fully differential switched-current filters
Author :
Zele, Rajesh H. ; Allstot, David J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
3/1/1994 12:00:00 AM
Abstract :
An accurate high-frequency switched-current integrator based on low-voltage fully-differential folded-cascode current copiers is presented. A five-pole lowpass ladder filter has been integrated using a 1.2 μm n-well CMOS process without floating precision linear capacitors. Experimental results show an accurate filter response for sampling frequencies up to 5 MHz. Using a nominal 3.3 V power supply, the measured dynamic range is 66 dB and the power dissipation is 10 mW/pole
Keywords :
CMOS integrated circuits; active filters; integrating circuits; ladder networks; linear integrated circuits; low-pass filters; switched filters; 1.2 micron; 3.3 V; 5 MHz; HF switched-current integrator; LV filters; five-pole lowpass ladder filter; folded-cascode current copiers; fully differential type; low-voltage filters; n-well CMOS process; switched-current filters; CMOS process; CMOS technology; Clocks; Cutoff frequency; Finite impulse response filter; IIR filters; Mirrors; Power MOSFET; Power dissipation; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
