Auto-adjustment of RC cells within a circuit
First Claim
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1. An electronic circuit, comprising:
- a first component couple formed by a resistor and by a capacitor, one of the two components of the first couple being an adjustable component; and
at least a second component couple formed by a resistor of the same nature as the resistor of the first couple and by a capacitor of the same nature as the capacitor of the first couple, one of the two 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
The invention is an integrated circuit comprising a first component couple R and C, at least a second component couple R1—R3 and C′1-C′2 and a calibration circuit 106. The component couples are RC cells. The invention corrects the errors in the values of the components of the RC cells of the same nature. Each RC cell comprises a component R, C′1 and C′2 having an adjustable value. The calibration circuit 106 performs the adjustment of an RC cell, then applies the same correction to the components of the other cells of the same nature.
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14 Claims
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1. An electronic circuit, comprising:
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a first component couple formed by a resistor and by a capacitor, one of the two components of the first couple being an adjustable component; and
at least a second component couple formed by a resistor of the same nature as the resistor of the first couple and by a capacitor of the same nature as the capacitor of the first couple, one of the two 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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- 11. A method for calibrating a first component couple formed by a resistor and by a capacitor, and by at least a second component couple formed by a resistor of the same nature as the resistor of the first couple and by a capacitor of the same nature as the capacitor of the first couple, one of the two components of the first couple being an adjustable component, and one of the two components of the second couple being an adjustable component, wherein the adjustment of the adjustable component of the first couple is made so as to compensate for the error in the product of the resistance times the capacitance of the said first couple, and wherein the same adjustment is applied to the adjustable component of the second couple.
Specification