Title :
A microcircuit tone generator for push-button dialing
Author_Institution :
Microsystems International, Ltd., Ottawa, Ont., Canada
Abstract :
This paper will describe a microelectronic tone generator whose output level is adjustable and stable to better than 1 dB, with operating line voltage ranging from 4.5 to 35 V dc; minimum supply current is 2 mA. Tantalum thin-film techniques used for filter, amplitude filter and amplifier.
Keywords :
Capacitors; Circuits; Filters; Impedance; Oscillators; Resistors; Resonant frequency; Schottky diodes; Temperature; Voltage;
Conference_Titel :
Solid-State Circuits Conference. Digest of Technical Papers. 1972 IEEE International
Conference_Location :
Philadelphia, PA, USA
DOI :
10.1109/ISSCC.1972.1155029
