Low-spur low-distortion digital-to-analog converter

Details Low-spur low-distortion digital-to-analog converter Low-spur low-distortion digital-to-analog converter

2006-10-24

2006-10-24

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S145000

Reexamination Certificate

active

07126519

ABSTRACT:
A system and method include receiving an input signal; transmitting high-frequency components of the input signal to a first converter; attenuating low-frequency components of the input signal to a predetermined level such that the low-frequency components of dither can be used to correct non-linearity errors introduced by the first converter; transmitting the low-frequency components of the input signal to a second converter; attenuating the high-frequency components of the input signal to a predetermined level such that the high-frequency components of linearization correction and dither can be used to correct non-linearity errors introduced by the second converter; converting the high-frequency components to form a first converted signal; converting the low-frequency components to form a second converted signal; and combining the first and second converted signals to form the output signal.

REFERENCES:
patent: 4128738 (1978-12-01), Gallery
patent: 6405227 (2002-06-01), Prakash
patent: 6493576 (2002-12-01), Dankwart-Eder

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