A universal gyroscope driving circuit with 70dB amplitude control range

Handle URI:
http://hdl.handle.net/10754/564291
Title:
A universal gyroscope driving circuit with 70dB amplitude control range
Authors:
Abdelghany, Mohamed A.; Khairallah, K.; Elsayed, Mohannad Yomn; Emira, Ahmed; Sedky, Sherif M.
Abstract:
A CMOS variable gain driving circuit with output signal amplitude control for gyroscopes with wide range of quality factors is presented. The driving circuit can be used for gyroscopes with Q values higher than 500. The circuit uses a current-commutating switching mixer to control the gyroscope driving signal level. Conventional driving circuits use automatic gain control (AGC) which suffers from limited linear range and the need for an off-chip capacitor for the peak detector and loop filter. Two stage variable gain amplifier is used in the proposed design to ensure enough gain for oscillation for such a wide range of quality factors. Analog and digital amplitude control methods are used to cover wide range of driving signal amplitude with enough accuracy to hit the maximum driving signal level without sacrificing gyroscope linearity. Due to the high DC gain of the amplifier chain, DC offset resulting from mismatches might saturate the amplifier output. DC offset correction is employed using a secondary negative feedback loop. The proposed driving circuit is being fabricated in 0.6μm CMOS technology. © 2010 IEEE.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2010 53rd IEEE International Midwest Symposium on Circuits and Systems
Conference/Event name:
53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010
Issue Date:
Aug-2010
DOI:
10.1109/MWSCAS.2010.5548659
Type:
Conference Paper
ISSN:
15483746
ISBN:
9781424477715
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAbdelghany, Mohamed A.en
dc.contributor.authorKhairallah, K.en
dc.contributor.authorElsayed, Mohannad Yomnen
dc.contributor.authorEmira, Ahmeden
dc.contributor.authorSedky, Sherif M.en
dc.date.accessioned2015-08-04T06:22:25Zen
dc.date.available2015-08-04T06:22:25Zen
dc.date.issued2010-08en
dc.identifier.isbn9781424477715en
dc.identifier.issn15483746en
dc.identifier.doi10.1109/MWSCAS.2010.5548659en
dc.identifier.urihttp://hdl.handle.net/10754/564291en
dc.description.abstractA CMOS variable gain driving circuit with output signal amplitude control for gyroscopes with wide range of quality factors is presented. The driving circuit can be used for gyroscopes with Q values higher than 500. The circuit uses a current-commutating switching mixer to control the gyroscope driving signal level. Conventional driving circuits use automatic gain control (AGC) which suffers from limited linear range and the need for an off-chip capacitor for the peak detector and loop filter. Two stage variable gain amplifier is used in the proposed design to ensure enough gain for oscillation for such a wide range of quality factors. Analog and digital amplitude control methods are used to cover wide range of driving signal amplitude with enough accuracy to hit the maximum driving signal level without sacrificing gyroscope linearity. Due to the high DC gain of the amplifier chain, DC offset resulting from mismatches might saturate the amplifier output. DC offset correction is employed using a secondary negative feedback loop. The proposed driving circuit is being fabricated in 0.6μm CMOS technology. © 2010 IEEE.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectDriving circuitsen
dc.subjectGyroscopeen
dc.subjectInertial sensorsen
dc.subjectMEMSen
dc.titleA universal gyroscope driving circuit with 70dB amplitude control rangeen
dc.typeConference Paperen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journal2010 53rd IEEE International Midwest Symposium on Circuits and Systemsen
dc.conference.date1 August 2010 through 4 August 2010en
dc.conference.name53rd IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2010en
dc.conference.locationSeattle, WAen
dc.contributor.institutionYoussef Jameel Science and Technology Research Center, American University in Cairo, New Cairo 11835, Egypten
dc.contributor.institutionPhysics Department, American University in Cairo, Egypten
dc.contributor.institutionFaculty of Engineering, Cairo University, Giza 12613, Egypten
kaust.authorEmira, Ahmeden
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