On designing linearly-tunable ultra-low voltage CMOS gm-C filters

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2000-01-01

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A linearly-tunable ULV transconductor featuring excellent stability of the processed signal common-mode voltage upon tuning, critical for very-low voltage applications, is presented. Its employment to the synthesis of CMOS gm-C high-frequency and voiceband filters is discussed. SPICE data describe the filter characteristics. For a 1.3 V-supply, their nominal passband frequencies are 1.0 MHz and 3.78 KHz, respectively, with tuning rates of 12.52 KHz/mV and 0.16 KHz/m V, input-referred noise spectral density of 1.3 μV/Hz1/2 and 5.0μV/Hz1/2 and standby consumption of 0.87 mW and 11.8 μW. Large-signal distortion given by THD = 1% corresponds to a differential output-swing of 360 mVpp and 480 mVpp, respectively. Common-mode voltage deviation is less than 4 mV over tuning interval.

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CMOS integrated circuits , Computer aided network analysis , Integrated circuit layout , Linear network analysis , Signal distortion , Signal filtering and prediction , Transconductance , Tuning , Voltage control , Software package SPICE , Electric filters

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Inglês

Como citar

Iscas 2000: IEEE International Symposium on Circuits and Systems - Proceedings, Vol Ii. New York: IEEE, p. 140-143, 2000.

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http://hdl.handle.net/11449/66059

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