Integrated circuit frequency response frequency point extraction and response curve calculation method and device

Abstract

The embodiment of the present application discloses a method and a device for extracting frequency points of an integrated circuit frequency response and calculating a response curve. The method includes calculating a resonant frequency point and its frequency response of the integrated circuit within a preset frequency range according to the calculation requirements of the frequency response of the VLSI frequency domain simulation, and dividing the preset frequency band into multiple sub-frequency bands based on the resonant frequency point, The non-uniform frequency point is obtained according to the Chebyshev polynomial zero point of each sub-band, and then the frequency response of the non-uniform frequency point is calculated, and the frequency response curve of the integrated circuit within the preset frequency range is obtained by interpolation. This application can realize the extraction of a small number of non-uniform frequency points that meet the calculation accuracy requirements, and quickly calculate the frequency response curve of the integrated circuit frequency domain simulation that meets the accuracy requirements within the preset frequency band, avoiding the difficulty in detecting the large-scale design Potential performance issues with integrated circuits.

Description

technical field [0001] The invention relates to the field of integrated circuit frequency domain simulation, in particular to a method and device for extracting frequency points of integrated circuit frequency responses and calculating response curves. Background technique [0002] Integrated circuits have played a very important role in all walks of life and are the cornerstone of the modern information society. It is a miniature electronic device or component. It uses a certain process to interconnect the transistors, resistors, capacitors, inductors and other components and wiring required in a circuit, and makes them on a small or several small semiconductor chips or media. on the substrate, and then encapsulated in a package to become a microstructure with the required circuit functions. Quite serious parasitic effects will be caused between the unit circuits of the integrated circuit and the interconnection lines between the chips of the PCB and the microwave multi-ch...

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Problems solved by technology

[0004] However, the inventor found in the process of implementing the present invention that, in the existing integrated circuit frequency domain simulation to extract evenly distributed scanning frequency points, the number of scanning frequency points required to meet the specified calculation accuracy is relatively large, and the corresponding calculation amount is relatively large , the calculation efficiency is poor, and at the same time, the effect of capturing the details of the frequency domain response is poor, so the error between the calculated VLSI frequency response in the preset frequency band and the actual frequency response is large, and it is difficult to detect the design Potential performance issues of the VLSI

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