DocumentCode
516714
Title
A Fully Digital DTMF Receiver
Author
Ekinci, Ahmet Suat ; Atalar, Abdullah
Author_Institution
Bilkent University, Department of Electrical & Electronics Engineering., 06533 Bilkent, Ankara, Turkey. Phone: +90-312-266-4307 Fax: +90-312-266-4126
fYear
1995
fDate
19-21 Sept. 1995
Firstpage
438
Lastpage
441
Abstract
An algorithm for detection of Dual Tone Multifrequency (DTMF) tones suitable for VLSI is proposed. The algorithm is based on an approximation of the correlation. The input signal is correlated with the hardlimited versions of three sinusoids having ¿/3 phase difference. This requires only additions and subtractions. The algorithm is realized as a fully integrated digital DTMF receiver chip fabricated in 1-¿m CMOS technology.
Keywords
Approximation algorithms; CMOS technology; Correlation; Digital filters; Filter bank; Gaussian noise; Phase detection; Phase frequency detector; Read only memory; Very large scale integration;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 1995. ESSCIRC '95. Twenty-first European
Conference_Location
Lille, France
Print_ISBN
2-86332-180-3
Type
conf
Filename
5468563
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