Patents by Inventor Shun Bai Tang

Shun Bai Tang 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).

  • OPAMP-less bandgap voltage reference with high PSRR and low voltage in CMOS process
    Patent number: 7737769
    Abstract: A circuit includes an OPAMP-less bandgap voltage generating core circuit connected between a regulated voltage and a ground reference to generate an output bandgap voltage. A preregulator circuit generates the regulated voltage from an unregulated supply voltage. The preregulator circuit includes a negative feedback loop operable to stabilize the regulated voltage and a current source operable to source current for the regulated voltage, the current source mirroring a PTAT current of the OPAMP-less bandgap voltage generating core circuit. The core circuit further includes a negative feedback loop and a positive feedback loop, the negative and positive feedback loops functioning to equalize two internal voltages within the core.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: June 15, 2010
    Assignee: Shenzhen STS Microelectronics Co., Ltd.
    Inventors: Yun Fei Deng, Shun Bai Tang
  • OPAMP-LESS BANDGAP VOLTAGE REFERENCE WITH HIGH PSRR AND LOW VOLTAGE IN CMOS PROCESS
    Publication number: 20080224761
    Abstract: A circuit includes an OPAMP-less bandgap voltage generating core circuit connected between a regulated voltage and a ground reference to generate an output bandgap voltage. A preregulator circuit generates the regulated voltage from an unregulated supply voltage. The preregulator circuit includes a negative feedback loop operable to stabilize the regulated voltage and a current source operable to source current for the regulated voltage, the current source mirroring a PTAT current of the OPAMP-less bandgap voltage generating core circuit. The core circuit further includes a negative feedback loop and a positive feedback loop, the negative and positive feedback loops functioning to equalize two internal voltages within the core.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Applicant: Shenzhen STS Microelectronics Co., LTD
    Inventors: Yun Fei Deng, Shun Bai Tang