Method for optimizing decoupling capacitor design in delay locked loops
OwnerClaude Gauthier, Brian Amick +2inventors
InventorsClaude Gauthier, Brian Amick, Dean Liu, Pradeep Trivedi
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Abstract
A method for optimizing decoupling capacitance in a delay locked loop is provided. A representative power supply waveform having noise is input into a simulation of the delay locked loop; an estimate of jitter is determined; and an amount of the decoupling capacitance is adjusted until the jitter falls below a pre-selected value. Further, a computer system for optimizing decoupling capacitance in a delay locked loop is provided. Further, a computer-readable medium having recorded thereon instructions adapted to optimize decoupling capacitance in a delay locked loop is provided.
Claims33
A method for optimizing decoupling capacitance in a delay locked loop, comprising:
- inputting a representative power supply waveform having noise to a simulation of the delay locked loop;
- estimating jitter of the delay locked loop;
- adjusting an amount of decoupling capacitance;
- and
- repeating the inputting, estimating, and adjusting until the jitter falls below a selected amount.
A computer system for optimizing decoupling capacitance in a delay locked loop, comprising:
- a processor;
- a memory;
- and
- software instructions stored in the memory adapted to cause the computer system to:
- input a representative power supply waveform having noise to a simulation of the delay locked loop;
- estimate jitter of the delay locked loop;
- adjust an amount of decoupling capacitance;
- and
- repeat the input, estimate, and adjust until the jitter falls below a selected amount.
A computer-readable medium having recorded thereon instructions executable by a processor, the instructions adapted to:
- input a representative power supply waveform having noise into a simulation of a delay locked loop;
- estimate jitter of the delay locked loop;
- adjust an amount of decoupling capacitance;
- and
- repeat the input, estimate, and adjust until the jitter falls below a selected amount.
Dependencies are inferred from the claim text.