Auto-adjustment of RC cells within a circuit
First Claim
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1. An electronic circuit, comprising:
- a first couple of components formed by a resistor and a capacitor, at least one of the components of the first couple being an adjustable component; and
at least a second couple of components formed by a resistor of the same nature as the resistor of the first couple and a capacitor of the same nature as the capacitor of the first couple, at least one of the components of the second couple being an adjustable component;
a calibration circuit for producing an adjustment value for the adjustable component of the first couple in order to compensate for the error in the product of the resistance by the capacitance of the said first couple, the adjustment value also being applied to the adjustable component of the said second couple.
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Abstract
An integrated circuit having a first couple of components R and C, at least a second couple of components R1–R3 and C′1–C′2 and a calibration circuit. The couple of componets form an RC cell of which one component is adjustable, and the calibration circuit. The invention corrects the errors in the values of the components of RC cells of the same nature. The calibration circuit performs the adjustment of an RC cell and then applies the same correction to the components of the other RC cells of the same nature.
9 Citations
10 Claims
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1. An electronic circuit, comprising:
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a first couple of components formed by a resistor and a capacitor, at least one of the components of the first couple being an adjustable component; and at least a second couple of components formed by a resistor of the same nature as the resistor of the first couple and a capacitor of the same nature as the capacitor of the first couple, at least one of the components of the second couple being an adjustable component; a calibration circuit for producing an adjustment value for the adjustable component of the first couple in order to compensate for the error in the product of the resistance by the capacitance of the said first couple, the adjustment value also being applied to the adjustable component of the said second couple. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification