A 273 MHz low noise CMOS MR preamplifier for disk drives

Jeremy Kuehlwein, Ramesh Harjani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In this paper we present the design for a high speed low noise preamplifier for use with magnetoresistive read elements in disk drive channels. The performance of the reader circuit is comparable with the more expensive current generation of BiCMOS MR preamplifiers. The measured results include a gain of 43 dB, a 3 dB bandwidth of 273 MHz, input-referred voltage noise that is less than 0.57 nV/√(Hz), and input-referred current noise that is less than 10.54 pA/√(Hz). The preamplifier has been implemented in a 0.8-μm CMOS process and occupies a die area of 1.78×1.78 mm2.

Original languageEnglish (US)
Title of host publicationProceedings - 12th Annual IEEE International ASIC/SOC Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages347-351
Number of pages5
ISBN (Electronic)0780356322, 9780780356320
DOIs
StatePublished - Jan 1 1999
Event12th Annual IEEE International ASIC/SOC Conference - Washington, United States
Duration: Sep 15 1999Sep 18 1999

Publication series

NameProceedings - 12th Annual IEEE International ASIC/SOC Conference

Other

Other12th Annual IEEE International ASIC/SOC Conference
CountryUnited States
CityWashington
Period9/15/999/18/99

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Kuehlwein, J., & Harjani, R. (1999). A 273 MHz low noise CMOS MR preamplifier for disk drives. In Proceedings - 12th Annual IEEE International ASIC/SOC Conference (pp. 347-351). [806532] (Proceedings - 12th Annual IEEE International ASIC/SOC Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASIC.1999.806532