Wayne N Olson

US Patent:

52607046, Nov 9, 1993

Filed:

May 31, 1991

Appl. No.:

7/712160

Inventors:

Charles H. Hustig - Hudson WI
Donald W. Moses - Eagan MN
Robert S. Bradford - Woodland Hills CA
Jeffrey L. Ward - Hudson WI
Wayne P. Olson - River Falls WI
Janice L. Cox - St. Paul MN
Raymond S. Miller - Seattle WA
Robert W. Moses - Seattle WA
James M. Kresse - Marlton NJ

Assignee:

Wadia Digital Corporation - River Falls WI

International Classification:

H03M 166
H03F 2100

US Classification:

341144

Abstract:

A direct power output digital to analog conversion of digital audio signals operates to directly convert digital audio signals into an analog power audio output signal capable of driving a speaker, such that there is no need for further amplification or modification of the audio output signal after the direct power output digital to analog conversion of the digital audio signals. The direct power output digital to analog conversion incorporates a digital-to-analog converter within the same feedback circuit as a current-to-voltage power amplifier by using a single resistive feedback network to supply the feedback signal from the output terminal of the current-to-voltage power amplifier to the summing junction of the same current-to-voltage power amplifier.