Low-voltage fully differential switched-current filters |
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| Authors: | Zele RH Allstot DJ |
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| Affiliation: | Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA; |
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| 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 |
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