Gain calibration controller
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United States of America Patent
Stats
-
Apr 10, 2018
Issued Date -
N/A
app pub date -
Jul 17, 2017
filing date -
Jul 27, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A gain calibration controller and gain calibration method is described for calibrating the gain of a class D audio amplifier comprising an adjustable gain stage and a feedback path coupled to an output of a reconstruction filter. The gain calibration controller detects a first output noise level in a first frequency range and a second output noise level in a second higher frequency range, varies the gain of the adjustable gain stage, determines a minimum stable gain value of a stable gain range from a change in at least one of the first and second output noise level in response to varying the gain of the adjustable gain stage, and determines a maximum stable gain value of the stable gain range from a change in at least one of the first and second output noise level in response to varying the gain of the adjustable gain stage.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- H03F Class
- 1300 Applications Filed
- 1118 Patents Issued To-Date
- 86 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H03F Class
- 20.80 % this patent is cited more than
- 7 Age
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
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