Title :
A canonical continuous-time MOSFET-capacitor filter with high linearity
Author :
Takagi, Shigetaka ; Fujii, Nobuo ; Yanagisawa, Takeshi
Author_Institution :
Fac. of Eng., Tokyo Inst. of Technol., Japan
Abstract :
The authors propose a synthesis of fully integrated canonical continuous-time filters with a high degree of linearity. The synthesis method is based on a differential current-integrator with a simple capacitor. A method to reduce the number of MOS transistors has also been presented. A third-order leapfrog filter is realized by the proposed method as an example. A total harmonic distortion less than 0.03% is obtained by SPICE analysis. The proposed method is advantageous, especially in the realization of higher-order filters, because of the reduction of higher-order filters, because of the reduction in chip area and manufacturing cost.<>
Keywords :
MOS integrated circuits; active filters; linear integrated circuits; linear network synthesis; MOS transistors; SPICE analysis; canonical continuous-time MOSFET-capacitor filter; differential current-integrator; filter synthesis; harmonic distortion; high linearity; third-order leapfrog filter; Costs; Differential amplifiers; Dynamic range; Filters; Linearity; MOS capacitors; MOSFET circuits; Manufacturing; Operational amplifiers; Voltage;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15375
