Title :
A differential input/output integrator without p-n-p transistors and its application to leapfrog filter synthesis
Author :
Takagi, Shigetaka ; Anzai, Takashi ; Yanagisawa, Takeshi
Author_Institution :
Fac. of Eng., Tokyo Inst. of Technol., Japan
Abstract :
The authors propose a differential input/output integrator to implement monolithic video-frequency analog filters. The proposed integrator requires no p-n-p transistors and works with a single 5-V supply. The proposed integrator was implemented by a 3- mu m bipolar process and a third-order video-frequency filter was built on the basis of the integrators. A leapfrog filter synthesis method fully utilizing the differential input/output integrators is described. The obtained filter has a low sensitivity to time constants of the integrators in the passband. Experimental results confirm the testability of the integrator and the filter.<>
Keywords :
active filters; active networks; bipolar integrated circuits; integrating circuits; linear integrated circuits; network synthesis; video equipment; 3 micron; 5 V; active filters; bipolar process; differential input/output integrator; leapfrog filter synthesis; monolithic video-frequency analog filters; n-p-n transistors; single 5-V supply; Costs; Digital filters; Frequency; Impedance; Integrated circuit manufacture; Integrated circuit synthesis; Integrated circuit technology; Manufacturing; Monolithic integrated circuits; Resistors;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15534
