Audio digital to analog converter with harmonic suppression

Details Audio digital to analog converter with harmonic suppression Audio digital to analog converter with harmonic suppression

2006-01-17

2006-01-17

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S144000

Reexamination Certificate

active

06987475

ABSTRACT:
A high quality DAC is provided for a lower cost (including the layout size of the circuit on an audio chip) of high end DACs. The DAC includes a first circuit configured to remove even harmonics from a sigma delta circuit, and a second circuit configured to remove odd harmonics.

REFERENCES:
patent: 4289403 (1981-09-01), Allington
patent: 5363856 (1994-11-01), Hughes et al.
patent: 5537435 (1996-07-01), Carney et al.
patent: 6324030 (2001-11-01), Cheung et al.
patent: 6580314 (2003-06-01), Deus et al.
patent: 2005/0174171 (2005-08-01), Oswal et al.

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