Patents by Inventor Azita Ashe

Azita Ashe 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).

  • Digital-to-analog converter with CMOS-compatible power-on reset circuit
    Patent number: 6292123
    Abstract: A power-on reset circuit employs all-CMOS circuitry to initiate a reset signal when the circuit's power supply voltage is low, and terminate the signal in response to the supply voltage exceeding a reference voltage by at least the greater of the threshold voltages of PFET and NFET transistors employed in the circuit. A diode-connected bipolar transistor is implemented with an FET-compatible circuit structure to establish the reference voltage, which compensates for the possibility of fabrication tolerances.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 18, 2001
    Assignee: Analog Devices, Inc.
    Inventors: Derek F. Bowers, Azita Ashe
  • CMOS-compatible power-on reset circuit
    Patent number: 6239630
    Abstract: A power-on reset circuit employs all-CMOS circuitry to initiate a reset signal when the circuit's power supply voltage is low, and terminate the signal in response to the supply voltage exceeding a reference voltage by at least the greater of the threshold voltages of PFET and NFET transistors employed in the circuit. A diode-connected bipolar transistor is implemented with an FET-compatible circuit structure to establish the reference voltage, which compensates for the possibility of fabrication tolerances.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 29, 2001
    Inventors: Derek F. Bowers, Azita Ashe