書誌事項
- タイトル別名
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- Electromagnetic Noise Emission from a Digital Printed Circuit Board as in Relation to Dispersion of Output Resistance of CMOS Logic IC
- CMOS ロンリ IC ノ シュツリョク テイコウ ノ バラツキ ト プリント
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Electromagnetic (EM) noise emission from a printed trace on a digital circuit board is evaluated for about forty samples of high-speed CMOS logic devices that have the same device number and the same package; 74HC00 SOP. The dependence of EM noise spectra on dispersion of switching speed and output resistances of logic gates were investigated. Products of 11 lots from four manufacturers were tested. The EM noise spectra were picked up by a small loop antenna located 20mm distant from the board surface. At frequency higher than 200MHz intensities of the spectra diverge beyond 10dB. The maximum difference of peak values on the spectra was 0.7dB within each lot, and 5.6dB for all the samples. Rise and fall time as well as output resistance of CMOS gates were also measured. As a result, the peak value on the noise spectra was found to be strongly dependent on the fall time and also the the on-resistance Rn of a CMOS gate. Deviation of the measured peak values of the noise spectra is less than 1dB from estimated values based on the on-resistance. This result suggests that the intensity of EM noise spectra can be predicted if the output resistances of CMOS gates are known.
収録刊行物
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- 電気学会論文誌Ｃ（電子・情報・システム部門誌）
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電気学会論文誌Ｃ（電子・情報・システム部門誌） 115 (4), 551-557, 1995
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390282679585998848
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- NII論文ID
- 10000050042
- 130006844795
- 10001707333
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- NII書誌ID
- AN10065950
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- ISSN
- 13488155
- 03854221
- http://id.crossref.org/issn/03854221
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- NDL書誌ID
- 3598370
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可