Patents by Inventor Robert Remmers

Robert Remmers 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).

  • Switched capacitor measurement circuit for measuring the capacitance of an input capacitor
    Patent number: 7906976
    Abstract: A switched capacitor measurement circuit is provided for measuring the capacitance of an input capacitor with a parallel parasitic resistor. The circuit comprises a switching arrangement, a reference capacitor, a steered current sink and an operational amplifier with an output, a non-inverting input connected to a reference voltage source and an inverting input connected to a first terminal of the input capacitor. The current sink is steered to compensate for a charge current due to the parasitic resistor. Still further, the circuit comprises a digital adder and an analog-to-digital converter with an analog input connected to the output of the operational amplifier and a digital output connected to a first input of the digital adder.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: March 15, 2011
    Assignees: Texas Instruments Deutschland GmbH, Texas Instruments Incorporated
    Inventors: Robert Remmers, John Vogt
  • SWITCHED CAPACITOR MEASUREMENT CIRCUIT FOR MEASURING THE CAPACITANCE OF AN INPUT CAPACITOR
    Publication number: 20090174417
    Abstract: A switched capacitor measurement circuit is provided for measuring the capacitance of an input capacitor with a parallel parasitic resistor. The circuit comprises a switching arrangement, a reference capacitor, a steered current sink and an operational amplifier with an output, a non-inverting input connected to a reference voltage source and an inverting input connected to a first terminal of the input capacitor. The current sink is steered to compensate for a charge current due to the parasitic resistor. Still further, the circuit comprises a digital adder and an analog-to-digital converter with an analog input connected to the output of the operational amplifier and a digital output connected to a first input of the digital adder.
    Type: Application
    Filed: September 4, 2008
    Publication date: July 9, 2009
    Applicant: TEXAS INSTRUMENTS DEUTSCHLAND GMBH
    Inventors: Robert Remmers, John Vogt