EP 2326950 A2 20110601 - A FREQUENCY-SHIFT CMOS MAGNETIC BIOSENSOR ARRAY WITH SINGLE BEAD SENSITIVITY AND NO EXTERNAL MAGNET
Title (en)
A FREQUENCY-SHIFT CMOS MAGNETIC BIOSENSOR ARRAY WITH SINGLE BEAD SENSITIVITY AND NO EXTERNAL MAGNET
Title (de)
CMOS-MAGNETBIOSENSOR-ARRAY MIT FREQUENZVERSCHIEBUNG UND EINZELKÜGELCHENEMPFINDLICHKEIT SOWIE OHNE EXTERNEN MAGNETEN
Title (fr)
GROUPEMENT DE BIOCAPTEURS MAGNÉTIQUES CMOS À DÉCALAGE DE FRÉQUENCE AVEC SENSIBILITÉ DE SAILLIE ANNULAIRE ET SANS AIMANT EXTERNE
Publication
Application
Priority
- US 2009056887 W 20090915
- US 39960309 A 20090306
- US 19460508 P 20080929
- US 19208708 P 20080915
- US 39932009 A 20090306
Abstract (en)
[origin: WO2010031016A2] According to one aspect, an integrated magnetic particle measurement device for detecting a presence or absence of magnetic particles in a sample volume includes at least one sensor cell having a differential sensor pair. An active sensor oscillator frequency is responsive to one or more magnetic particles situated within a sample volume. The sensor cell is configured to be operative in the absence of an externally applied magnetic field. A frequency measurement circuit provides as a time-multiplexed output a first count representative of the active sensor oscillator frequency and a second count representative of the reference sensor oscillator frequency. A calculated difference between the first count and the second count is indicative of a presence or an absence of one or more magnetic particles within the sample volume. An integrated magnetic particle measurement system array and a method for detecting one or more magnetic particles are also described.
IPC 8 full level
G01N 33/48 (2006.01)
CPC (source: EP)
G01N 27/745 (2013.01); G01N 33/54326 (2013.01); G01N 33/5438 (2013.01)
Citation (search report)
See references of WO 2010031016A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2010031016 A2 20100318; WO 2010031016 A3 20100617; CN 102246034 A 20111116; CN 102246034 B 20140312; EP 2326950 A2 20110601
DOCDB simple family (application)
US 2009056887 W 20090915; CN 200980145751 A 20090915; EP 09813773 A 20090915