Data converter

Details Data converter Data converter

2006-04-25

2006-04-25

Nguyen, Linh V. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S155000

Reexamination Certificate

active

07034726

ABSTRACT:
A data converter comprises a discrete-time sigma delta modulator e.g. for driving a Class-D power amplifier. The low-pass filter of the sigma delta modulator is modified by adding a suitably positioned pole to lower the oscillation frequency (limit cycle) of the sigma delta modulator in order to obtain increased clustering of the pulses applied to the output of the data converter.

REFERENCES:
patent: 5834987 (1998-11-01), Dent
patent: 6064871 (2000-05-01), Leung
patent: 6411244 (2002-06-01), Dobos et al.
patent: 6448915 (2002-09-01), Logue
patent: 6822592 (2004-11-01), Gandolfi et al.

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