COMPENSATION CIRCUIT FOR USE WITH INPUT BUFFER AND METHOD OF OPERATING THE SAME
First Claim
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1. A compensation circuit for use with an input buffer, the compensation circuit comprising:
- an input buffer configured to amplify an input signal and output a compensated signal; and
a process detector including a replica of the input buffer, the process detector configured to output at least one comparison signal indicating a variation in the input buffer,wherein the input buffer is configured to control an output signal based on the at least one comparison signal.
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Abstract
A compensation circuit for use with an input buffer includes an input buffer configured to amplify an input signal and output a compensated signal. A process detector includes a replica of the input buffer. The process detector is configured to output at least one comparison signal indicating a variation in the input buffer. The input buffer controls an output signal based on the at least one comparison signal.
14 Citations
20 Claims
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1. A compensation circuit for use with an input buffer, the compensation circuit comprising:
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an input buffer configured to amplify an input signal and output a compensated signal; and a process detector including a replica of the input buffer, the process detector configured to output at least one comparison signal indicating a variation in the input buffer, wherein the input buffer is configured to control an output signal based on the at least one comparison signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of compensating for a variation in an input buffer of a semiconductor device, the method comprising:
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detecting a variation in the input buffer by using a replica of the input buffer; and controlling an output of the input buffer based on the detected variation. - View Dependent Claims (13, 14, 15)
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16. A variation compensation circuit comprising:
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a first buffer configured to receive an input signal and a reference signal through two input terminals, respectively, and output an output signal; a second buffer having substantially the same configuration as the first buffer, the second buffer configured to receive the reference signal through two input terminals and output a replica voltage; a first comparator configured to compare the replica voltage with a first reference voltage and output a first comparison signal; and a second comparator configured to compare the replica voltage with a second reference voltage and output a second comparison signal, wherein the first buffer is configured to adjust the output signal depending on the first comparison signal and the second comparison signal. - View Dependent Claims (17, 18, 19, 20)
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Specification