{"id":36558,"date":"2004-10-01T00:01:57","date_gmt":"2004-10-01T00:01:57","guid":{"rendered":"https:\/\/silvaco.com\/%e6%9c%aa%e5%88%86%e7%b1%bb\/noise-simulations\/"},"modified":"2026-10-15T14:20:54","modified_gmt":"2026-10-15T21:20:54","slug":"noise-simulations","status":"publish","type":"post","link":"https:\/\/silvaco.com\/zh-hans\/simulation-standard-zh-hans\/noise-simulations\/","title":{"rendered":"Noise Simulations"},"content":{"rendered":"

Hints, Tips and Solutions – October 2004<\/strong><\/h1>\n

Noise Simulations<\/strong><\/p>\n

Introduction:<\/strong><\/p>\n

A customer had 3 elements with identical current and voltage applied.<\/p>\n

A. W\/L = 10um\/2um M=4<\/p>\n

B. W\/L = 40um\/2um M=1<\/p>\n

C. W\/L = 10um\/2um 4 devices in parallel<\/p><\/blockquote>\n

    \n
  1. If the MOS model file has the parameters: noia, noib, noic, Af, Kf and nlev=0 will\u00a0SmartSpice<\/strong><\/em>\u00a0ignore the BSIM III noise parameters (noia, noib and noic) and simply use AK and KF?There are various ways to calculate the noise. If the model card includes the key word \u201cnlev\u201d then parameters Af & Kf are used. If this key word does not appear in the model card then the parameters noia, noib and noic are used for noise level calculations.<\/li>\n
  2. If\u00a0SmartSpice<\/strong><\/em>\u00a0does ignore noia, noib, noic when nlev is set to nlev=0, then, why do these three cases I have in the netlist not have the same identical noise?<\/li>\n<\/ol>\n

    \"\"<\/p>\n

    Download Simulation Standard<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    If the MOS model file has the parameters: noia, noib, noic, Af, Kf and nlev=0 will\u00a0SmartSpice\u00a0ignore the BSIM III noise parameters (noia, noib and noic)<\/p>\n","protected":false},"author":12,"featured_media":22540,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[7723],"tags":[],"class_list":["post-36558","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-simulation-standard-zh-hans","entry","has-media"],"yoast_head":"\nNoise Simulations - Silvaco<\/title>\n<meta name=\"description\" content=\"If the MOS model file has the parameters: noia, noib, noic, Af, Kf and nlev=0 will\u00a0SmartSpice\u00a0ignore the BSIM III noise parameters (noia, noib and noic)\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/silvaco.com\/zh-hans\/simulation-standard-zh-hans\/noise-simulations\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Noise Simulations\" \/>\n<meta property=\"og:description\" content=\"If the MOS model file has the parameters: noia, noib, noic, Af, Kf and nlev=0 will\u00a0SmartSpice\u00a0ignore the BSIM III noise parameters (noia, noib and noic)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/silvaco.com\/zh-hans\/simulation-standard-zh-hans\/noise-simulations\/\" \/>\n<meta property=\"og:site_name\" content=\"Silvaco\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SilvacoSoftware\/\" \/>\n<meta property=\"article:published_time\" content=\"2004-10-01T00:01:57+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-15T21:20:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_oct_2004_hints.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1344\" \/>\n\t<meta property=\"og:image:height\" content=\"1669\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Casey Molver\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SilvacoSoftware\" \/>\n<meta name=\"twitter:site\" content=\"@SilvacoSoftware\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Casey Molver\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/zh-hans\\\/simulation-standard-zh-hans\\\/noise-simulations\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/zh-hans\\\/simulation-standard-zh-hans\\\/noise-simulations\\\/\"},\"author\":{\"name\":\"Casey Molver\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/#\\\/schema\\\/person\\\/2763eb741ca5ac04477fdff50ed84c80\"},\"headline\":\"Noise Simulations\",\"datePublished\":\"2004-10-01T00:01:57+00:00\",\"dateModified\":\"2026-10-15T21:20:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/zh-hans\\\/simulation-standard-zh-hans\\\/noise-simulations\\\/\"},\"wordCount\":155,\"image\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/zh-hans\\\/simulation-standard-zh-hans\\\/noise-simulations\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/silvaco.com\\\/wp-content\\\/uploads\\\/simulationstandard\\\/simstd_oct_2004_hints.jpg\",\"articleSection\":[\"Simulation Standard\"],\"inLanguage\":\"zh-CN\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/zh-hans\\\/simulation-standard-zh-hans\\\/noise-simulations\\\/\",\"url\":\"https:\\\/\\\/silvaco.com\\\/zh-hans\\\/simulation-standard-zh-hans\\\/noise-simulations\\\/\",\"name\":\"Noise Simulations - 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