DocumentCode
1901086
Title
An Integrated Telephone Speech Circuit Including a Line Fed Loudspeaker Amplifier
Author
Eberhardt, K. ; Hoeppner, D. ; Rall, B.
Author_Institution
AEG-TELEFUNKEN Design Center for Integrated Circuits, Ulm
fYear
1981
fDate
22-24 Sept. 1981
Firstpage
47
Lastpage
49
Abstract
A speech circuit is described which contains a line fed loudspeaker amplifier, an accurate line loss compensation and a line length dependent sidetone network. The maximum power dissipation of the integrated circuit is less than 300 mW at 100 mA line current. The total harmonic distortion is less than 1% for -10 dBm send and receive level.
Keywords
Capacitors; Circuits; Differential amplifiers; Loudspeakers; Power dissipation; Regulators; Speech; Telephony; Total harmonic distortion; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid State Circuits Conference, 1981. ESSCIRC '81. 7th European
Conference_Location
Freiburg, F. R. Germany
Print_ISBN
3800712385
Type
conf
Filename
5435008
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