A programmable active-R sine wave oscillator with microprocessor control

Author

Sanyal, S.K. ; Sarker, U.C. ; Nandi, R.

Author_Institution

Dept. of Electron. & Telecommun. Eng., Jadavpur Univ., Calcutta, India

Volume

38

Issue

4

fYear

1989

fDate

8/1/1989 12:00:00 AM

Firstpage

925

Lastpage

927

Abstract

The design and analysis of a simple active-R oscillator based on a two-pole operational amplifier model are described. The oscillator is tunable by one resistor over a fairly wide range at low sensitivities. A digitally programmable oscillator was derived by replacing the tuner resistor with an array of switched binary weighted resistors. The CMOS switches were activated and controlled by a SDA-UNI-01 microcomputer system based on the 8085 microprocessor. The performance of the programmable oscillator and its extension as a switched frequency-shift-keyed wave generator were verified

Keywords

active networks; circuit CAD; circuit analysis computing; computerised control; microcomputer applications; oscillators; tuning; 8085 microprocessor; CMOS switches; SDA-UNI-01 microcomputer; analysis; array of switched binary weighted resistors; design; digitally programmable oscillator; microprocessor control; programmable active-R sine wave oscillator; switched frequency-shift-keyed wave generator; two-pole operational amplifier model; Control systems; Frequency; Microcomputers; Microprocessors; Operational amplifiers; Oscillators; Resistors; Semiconductor device modeling; Switches; Tuners;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.31017

Filename

31017