Method and system for filter tuning using a digital trim value
First Claim
Patent Images
1. A method for storing a result of a tuning process, comprising:
- a) generating a first characteristic signal;
b) generating a second characteristic signal in response to a current signal;
c) determining an adjustment to the current signal based at least in part upon the first and second characteristic signals;
d) storing, in a memory, a digital value representing the adjustment;
e) repeating elements a) through d) iteratively and updating the digital value stored in the memory after each iteration; and
f) stopping the iterative repetition upon performing a predetermined number of iterations.
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Abstract
A method for storing a result of a tuning process includes generating a first characteristic signal using a signal generator. The method also includes generating a second characteristic signal using a master circuit, wherein the master circuit generates the second characteristic signal in response to a current signal. The method further includes determining an adjustment to the current signal based at least in part upon the first and second characteristic signals, and storing a digital value representing the adjustment.
20 Citations
29 Claims
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1. A method for storing a result of a tuning process, comprising:
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a) generating a first characteristic signal; b) generating a second characteristic signal in response to a current signal; c) determining an adjustment to the current signal based at least in part upon the first and second characteristic signals; d) storing, in a memory, a digital value representing the adjustment; e) repeating elements a) through d) iteratively and updating the digital value stored in the memory after each iteration; and f) stopping the iterative repetition upon performing a predetermined number of iterations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A tuning circuit, comprising:
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a signal generator operable to generate a first characteristic signal; a master circuit operable to receive a current signal and to generate a second characteristic signal in response to the current signal; a controller operable to; a) determine an adjustment to the current signal based at least in part upon the first and second characteristic signals; b) store, in a memory, a digital value representing the adjustment; c) repeat elements a) and b) iteratively and update the digital value stored in the memory after each iteration; and a counter operable to maintain a count of a number of iterations completed by the controller, wherein the controller is further operable to stop the iterative repetition of the steps in response to the count reaching a predetermined number; and the memory operable to store the digital values. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A circuit, comprising:
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a first comparator operable to; compare a first voltage across a first capacitor to a reference voltage; and generate a signal when the first voltage reaches the reference voltage; a second comparator operable to compare a second voltage measured across a second capacitor to a third voltage; a counter operable to maintain a count of the number of signals generated by the first comparator; a memory operable to store a digital value comprising a plurality of bits; and a controller operable to receive the signal from the first comparator and, in response, to store the result of the comparison performed by the second comparator in a particular bit of the digital value identified by the count on the counter. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A system, comprising:
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means for generating a first characteristic signal; means for generating a second characteristic signal in response to a current signal; means for iteratively determining an adjustment to the current signal based at least in part upon the first and second characteristic signals; means for storing a digital value representing the adjustment, wherein the means for storing is operable to update the digital value after each iteration; means for counting a number of iterations performed by the means for determining the adjustment; and means for stopping the iteration of the means for determining upon the means for determining performing a predetermined number of iterations.
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Specification