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

fYear

1988

fDate

7-9 June 1988

Firstpage

2855

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1988., IEEE International Symposium on

Conference_Location

Espoo, Finland

Type

conf

DOI

10.1109/ISCAS.1988.15534

Filename

15534