Modeling of Circuits with Strongly Temperature Dependent Thermal Conductivities for Cryogenic CMOS
| Autor: | James E. Levy, Thomas M. Gurrieri, Malcolm S. Carroll, K. Eng, Jason Hamlet |
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| Rok vydání: | 2010 |
| Předmět: |
Condensed Matter - Materials Science
Materials science business.industry Circuit design Transistor Spice General Engineering Electrical engineering Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Hardware_PERFORMANCEANDRELIABILITY Noise (electronics) law.invention Computer Science::Hardware Architecture Thermal conductivity Computer Science::Emerging Technologies CMOS law Hardware_INTEGRATEDCIRCUITS Optoelectronics Equivalent circuit business Hardware_LOGICDESIGN Electronic circuit |
| DOI: | 10.48550/arxiv.1008.3409 |
| Popis: | When designing and studying circuits operating at cryogenic temperatures understanding local heating within the circuits is critical due to the temperature dependence of transistor and noise behavior. We have investigated local heating effects of a CMOS ring oscillator and current comparator at T=4.2K. In two cases, the temperature near the circuit was measured with an integrated thermometer. A lumped element equivalent electrical circuit SPICE model that accounts for the strongly temperature dependent thermal conductivities and special 4.2K heat sinking considerations was developed. The temperature dependence on power is solved numerically with a SPICE package, and the results are within 20% of the measured values for local heating ranging from 6 pages, 5 figures |
| Databáze: | OpenAIRE |
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