Sigma-delta converter noise cancellation

Details Sigma-delta converter noise cancellation Sigma-delta converter noise cancellation

2008-09-26

2010-10-12

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000, C341S120000

Reexamination Certificate

active

07812750

ABSTRACT:
Embodiments provide apparatuses, systems, and methods to convert an analog signal input into a sigma-delta digital output at a high sampling rate and correct for noise components of the digital output. An analog filter coupled to a sigma-delta converter accepts a noise-shaped analog signal from the sigma-delta converter to attenuate signal components of the noise-shaped analog signal at a plurality of folding frequencies associated with a sampling rate of a low-speed Analog-To-Digital (ADC) to produce a filtered output. The low-speed ADC is coupled to an output of the analog filter and samples the filtered output of the analog filter at a sampling rate slower than the high sample rate to output an ADC digital output. Other embodiments may be described and claimed.

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