Patents Assigned to Q-Star Test N.V.
  • Patent number: 7315974
    Abstract: The present invention is related to a method for testing a micro-electronic device, by applying a plurality of test vectors to said device, and measuring for each test vector, the quiescent supply current IDDQ, to said device, wherein each IDDQ measured value is divided by another IDDQ value, and wherein the result of said division is compared to a predefined reference, resulting in a pass or fail decision for said device.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: January 1, 2008
    Assignee: Q-Star Test N.V.
    Inventors: Hans Manhaeve, Piet De Pauw
  • Patent number: 7315180
    Abstract: The present invention is related to a device (1) for measuring the quiescent current IDDQ drawn by an electronic device such as a CMOS device or an IC, from a supply voltage. The quiescent current is drawn in between switching peaks, and is a measure for the quality of a device under test. The measurement device of the invention comprises a current measuring unit (6), and parallel to this CMU (6), a current bypass unit CBU (20), comprising a power MOSFET. In the CBU of the invention, a connection (51) is present between a terminal other than the gate or base of one driver transistor and the source of the MOSFET, thereby minimising the charge transfer effects which are likely to occur during switching of the MOSFET. The invention is further related to a measurement device for IDDQ measurement comprising a current offset unit (21), which is aimed at improving the measurement range, without losing measurement resolution.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: January 1, 2008
    Assignee: Q-Star Test N.V.
    Inventors: Hans Manhaeve, Stefaan Kerckenaere, Bohumil Straka
  • Patent number: 6927592
    Abstract: The present invention is related to a device (1) for measuring the quiescent current IDDQ drawn by an electronic device such as a CMOS device or an IC, from a supply voltage. The quiescent current is drawn in between switching peaks, and is a measure for the quality of a device under test. The measurement device of the invention comprises a current measuring unit (6), and parallel to this CMU (6), a current bypass unit CBU (20), comprising a power MOSFET. In the CBU of the invention, a connection (51) is present between a terminal other than the gate or base of one driver transistor and the source of the MOSFET, thereby minimising the charge transfer effects which are likely to occur during switching of the MOSFET. The invention is further related to a measurement device for IDDQ measurement comprising a current offset unit (21), which is aimed at improving the measurement range, without losing measurement resolution.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: August 9, 2005
    Assignee: Q-Star Test N.V.
    Inventors: Hans Manhaeve, Stefaan Kerckenaere, Bohumil Straka
  • Publication number: 20050156619
    Abstract: The present invention is related to a device (1) for measuring the quiescent current IDDQ drawn by an electronic device such as a CMOS device or an IC, from a supply voltage. The quiescent current is drawn in between switching peaks, and is a measure for the quality of a device under test. The measurement device of the invention comprises a current measuring unit (6), and parallel to this CMU (6), a current bypass unit CBU (20), comprising a power MOSFET. In the CBU of the invention, a connection (51) is present between a terminal other than the gate or base of one driver transistor and the source of the MOSFET, thereby minimising the charge transfer effects which are likely to occur during switching of the MOSFET. The invention is further related to a measurement device for IDDQ measurement comprising a current offset unit (21), which is aimed at improving the measurement range, without losing measurement resolution.
    Type: Application
    Filed: March 15, 2005
    Publication date: July 21, 2005
    Applicant: Q-STAR TEST N.V.
    Inventors: Hans Manhaeve, Stefaan Kerckenaere, Bohumil Straka
  • Publication number: 20040046576
    Abstract: The present invention is related to a device (1) for measuring the quiescent current IDDQ drawn by an electronic device such as a CMOS device or an IC, from a supply voltage. The quiescent current is drawn in between switching peaks, and is a measure for the quality of a device under test. The measurement device of the invention comprises a current measuring unit (6), and parallel to this CMU (6), a current bypass unit CBU (20), comprising a power MOSFET. In the CBU of the invention, a connection (51) is present between a terminal other than the gate or base of one driver transistor and the source of the MOSFET, thereby minimising the charge transfer effects which are likely to occur during switching of the MOSFET. The invention is further related to a measurement device for IDDQ measurement comprising a current offset unit (21), which is aimed at improving the measurement range, without losing measurement resolution.
    Type: Application
    Filed: July 3, 2003
    Publication date: March 11, 2004
    Applicant: Q-STAR TEST N.V.
    Inventors: Hans Manhaeve, Stefaan Kerckenaere, Bohumil Straka
  • Publication number: 20040006731
    Abstract: The present invention is related to a method for testing a micro-electronic device, by applying a plurality of test vectors to said device, and measuring for each test vector, the quiescent supply current IDDQ, to said device, wherein each IDDQ measured value is divided by another IDDQ value, and wherein the result of said division is compared to a predefined reference, resulting in a pass or fail decision for said device.
    Type: Application
    Filed: May 22, 2003
    Publication date: January 8, 2004
    Applicant: Q-Star Test N.V.
    Inventors: Hans Manhaeve, Piet De Pauw