DocumentCode :
2070407
Title :
Analysis of DRAM EMI dependence on data pattern and power delivery design using a near-field EMI scanner
Author :
Lee, Pilsoo ; Lee, Junho ; Yoon, Dae-kun ; Choi, Jaehoon ; Hong, Sungjoo
Author_Institution :
R&D Div., Hynix Semicond. Inc., San
fYear :
2008
fDate :
19-23 May 2008
Firstpage :
271
Lastpage :
274
Abstract :
This paper presents the analysis of DRAM-related EMI dependence on DQ/GIO data patterns and power delivery design. The EMI levels of two types of DDR2 667 memories are tested and the near- and far-field emission levels are measured at 1 GHz frequency (the 3rd harmonic of the clock). Five types of DQ patterns, which have different magnitudes of EMI-related frequency, are forced to transmit repeatedly and the effect on radiated emission are measured. As well, two DRAM chips, which have different power delivery design, are tested to see the effect of power delivery design with the data pattern dependency.
Keywords :
DRAM chips; electromagnetic interference; DRAM EMI dependence; EMI-related frequency; data pattern dependency; far-field emission levels; near-field EMI scanner; near-field emission levels; power delivery design; radiated emission; Electromagnetic compatibility; Electromagnetic interference; Pattern analysis; Random access memory;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008. Asia-Pacific Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-981-08-0629-3
Electronic_ISBN :
978-981-08-0629-3
Type :
conf
DOI :
10.1109/APEMC.2008.4559864
Filename :
4559864
Link To Document :
بازگشت