Efficient techniques for accurate modeling and simulation of substrate coupling in mixed-signal ICs

Costa, J.P.; Chou, M.; Silveira, L.M.

doi:10.1109/date.1998.655963

Cited by 10 publications

(7 citation statements)

References 12 publications

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“…The profiles used are taken from [9] and are described in Figure 4. The high-resistivity substrate is used in various BiC-MOS process, while the low-resistivity substrate is used in CMOS due to their latch-up suppressing properties.…”

Section: Resultsmentioning

confidence: 99%

Improved approach to analysis of substrate coupling based on multilayered Green's function

2006

Int J RF and Microwave Comp Aid Eng

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This article presents an improvement on the evaluation of a Green's function method proposed by Niknejad (1998) for modeling and analysis of substrate coupling in integrated circuits. By careful combination, the 64-term summation can be approximated by a four-term one. Therefore, the computational cost can be reduced. The approximation is effective for contact pairs small compared to their separations. This article also studies quantitatively how small the contact should be in order for approximation to be applicable. Numerical results show that a speed-up of over 6؋ could be achieved by adopting the new approach.

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Section: Resultsmentioning

confidence: 99%

Improved approach to analysis of substrate coupling based on multilayered Green's function

2006

Int J RF and Microwave Comp Aid Eng

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“…Several techniques have been proposed to model and analyze substrate noise accurately in integrated circuit level [11]- [13]. However, these techniques require the detailed implementation information in transistors and time-intensive transistor-level simulation.…”

Section: B Substrate Noise Modelmentioning

confidence: 99%

Fast substrate noise-aware floorplanning with preference directed graph for mixed-signal SOCs

Cho

Shin

Pan

2006

Proceedings of the 2006 Conference on Asia South Pacific Design Automation - ASP-DAC '06

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Abstract-In this paper, we introduce a novel substrate noise estimation technique during early floorplanning, based on the concept of Block Preference Directed Graph (BPDG) and the classic Sequence Pair (SP) floorplan representation. Given a set of analog and digital blocks, the BPDG is constructed based on their inherent noise characteristics to capture their preferred relative orders for substrate noise minimization. For each sequence pair generated during floorplanning evaluation, we can measure its violation against BPDG very efficiently. We observe that by simply counting the number of violations obtained in this manner, it correlates remarkably well with accurate but computationintensive substrate noise modeling. Thus, our BPDG-based model has high fidelity to guide the substrate noise-aware floorplanning and layout optimization, which become a growing concern for mixed-signal/RF system on chips (SOC). Our experimental results show that the proposed approach is over 60x faster than conventional floorplanning with even very compact substrate noise models. We also obtain less area and total substrate noise than the conventional approach.

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“…Typically, finite difference methods or boundary element methods are used to solve for the substrate potential distribution due to injected noise sources [41]- [44]. Recently, these methods have been speeded up with similar acceleration techniques as in RF or interconnect simulation, e.g., using an eigendecomposition technique [45]. Their efficiency even allows one to perform some substrate design optimizations [46].…”

Section: A Numerical Simulation Of Analog and Mixed-signal Circuitsmentioning

confidence: 99%

Computer-aided design of analog and mixed-signal integrated circuits

2000

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Efficient techniques for accurate modeling and simulation of substrate coupling in mixed-signal ICs

Abstract: Abstract

Cited by 10 publications

References 12 publications

Improved approach to analysis of substrate coupling based on multilayered Green's function

Improved approach to analysis of substrate coupling based on multilayered Green's function

Fast substrate noise-aware floorplanning with preference directed graph for mixed-signal SOCs

Computer-aided design of analog and mixed-signal integrated circuits

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