Patents by Inventor Stefan Allen Siegel

Stefan Allen Siegel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7218169
    Abstract: A compensation circuit comprises a reference circuit including a reference NMOS device and a reference PMOS device. The reference circuit is operative to generate a first reference signal and a second reference signal, the first reference signal being a function of at least one of a process characteristic, a voltage characteristic and a temperature characteristic of the reference NMOS device, and the second reference signal being a function of at least one of a process characteristic, a voltage characteristic and a temperature characteristic of the reference PMOS device. The compensation circuit further comprises a control circuit connected to the reference circuit.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 15, 2007
    Assignee: Agere Syatems Inc.
    Inventors: Dipankar Bhattacharya, Makeshwar Kothandaraman, John Christopher Kriz, Bernard Lee Morris, Jeffrey Jay Nagy, Stefan Allen Siegel
  • Patent number: 7034653
    Abstract: A semiconductor resistor comprises a resistor body formed on a semiconductor substrate and first and second conductive terminals electrically connected to the resistor body at opposite ends thereof. The semiconductor resistor further includes at least first and second conductive paths between at least one of the first and second conductive terminals and the resistor body. The at least one conductive terminal is configured such that a resistance of the at least one conductive terminal between the at least first and second conductive paths is substantially matched to a resistance of the resistor body between the at least first and second conductive paths. In this manner, a current distribution between the at least first and second conductive paths is substantially matched.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: April 25, 2006
    Assignee: Agere Systems Inc.
    Inventors: Dipankar Bhattacharya, John Christopher Kriz, Stefan Allen Siegel, Joseph E. Simko, Yehuda Smooha
  • Patent number: 6774698
    Abstract: An apparatus is disclosed for translating a lower voltage signal, utilized in a low voltage integrated circuit, to a higher voltage signal suitable for use in a high voltage circuit. The apparatus includes a low voltage transistor assembly capable of operating in response to the lower voltage signal; a voltage regulator which is configured to limit an applied voltage across the low voltage transistor assembly; and a high voltage converter which is responsive to the operation of the low voltage transistor assembly to generate the higher voltage signal. The voltage regulator includes a reference voltage generator and a voltage limiter.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: August 10, 2004
    Assignee: Agere Systems Inc.
    Inventors: Dipankar Bhattacharya, Makeshwar Kothandaraman, John Christopher Kriz, Bernard Lee Morris, Stefan Allen Siegel
  • Publication number: 20040150454
    Abstract: An apparatus is disclosed for translating a lower voltage signal, utilized in a low voltage integrated circuit, to a higher voltage signal suitable for use in a high voltage circuit. The apparatus includes a low voltage transistor assembly capable of operating in response to the lower voltage signal; a voltage regulator which is configured to limit an applied voltage across the low voltage transistor assembly; and a high voltage converter which is responsive to the operation of the low voltage transistor assembly to generate the higher voltage signal. The voltage regulator includes a reference voltage generator and a voltage limiter.
    Type: Application
    Filed: January 30, 2003
    Publication date: August 5, 2004
    Inventors: Dipankar Bhattacharya, Makeshwar Kothandaraman, John Christopher Kriz, Bernard Lee Morris, Stefan Allen Siegel