Patents by Inventor Srikanth Vellore Avadhanam Ramamurthy

Srikanth Vellore Avadhanam Ramamurthy 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: 12341520
    Abstract: A differential transceiver including a driver circuit and a receiver circuit, and a serial communications network including the transceiver. The receiver circuit includes an input resistor attenuator, having first and second attenuator inputs coupled to the first and second terminals, respectively, a differential comparator having first and second comparator inputs, and an output buffer having an input coupled to the output of the comparator. The receiver circuit further includes a first switch coupling the first attenuator output to the first comparator input, a second switch coupling the second attenuator output to the second comparator input, and a fail-safe circuit including first and second current sources coupled to the first and second comparator inputs, respectively, and third and fourth switches coupled in series between the first and second current sources.
    Type: Grant
    Filed: May 31, 2023
    Date of Patent: June 24, 2025
    Assignee: Texas Instruments Incorporated
    Inventors: Jitender Kapil, Srikanth Vellore Avadhanam Ramamurthy
  • Publication number: 20240405760
    Abstract: A differential transceiver including a driver circuit and a receiver circuit, and a serial communications network including the transceiver. The receiver circuit includes an input resistor attenuator, having first and second attenuator inputs coupled to the first and second terminals, respectively, a differential comparator having first and second comparator inputs, and an output buffer having an input coupled to the output of the comparator. The receiver circuit further includes a first switch coupling the first attenuator output to the first comparator input, a second switch coupling the second attenuator output to the second comparator input, and a fail-safe circuit including first and second current sources coupled to the first and second comparator inputs, respectively, and third and fourth switches coupled in series between the first and second current sources.
    Type: Application
    Filed: May 31, 2023
    Publication date: December 5, 2024
    Inventors: Jitender Kapil, Srikanth Vellore Avadhanam Ramamurthy
  • Patent number: 10848175
    Abstract: In some examples, a sigma-delta analog-to-digital converter (ADC), comprises a first set of switches configured to receive a first voltage signal; a second set of switches coupled to the first set of switches at a first node and a second node, the second set of switches configured to receive a second voltage signal; an integrator including a first input sampling capacitor coupled to the first node and a second input sampling capacitor coupled to the second node, wherein the integrator configured to generate a first output signal. The sigma-delta ADC further comprises a comparator coupled to the integrator and configured to generate a second output signal based on the first output signal; and a controller unit having a first counter, a second counter, and a processor, the controller unit coupled to the first and second sets of switches, the integrator, and the comparator.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: November 24, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jerry Lee Doorenbos, Keith Eric Sanborn, Srikanth Vellore Avadhanam Ramamurthy, Mina Raymond Naguib Nashed, Dwight David Griffin
  • Patent number: 10461771
    Abstract: In some examples, a sigma-delta analog-to-digital converter (ADC), comprises a first set of switches configured to receive a first voltage signal; a second set of switches coupled to the first set of switches at a first node and a second node, the second set of switches configured to receive a second voltage signal; an integrator including a first input sampling capacitor coupled to the first node and a second input sampling capacitor coupled to the second node, wherein the integrator configured to generate a first output signal. The sigma-delta ADC further comprises a comparator coupled to the integrator and configured to generate a second output signal based on the first output signal; and a controller unit having a first counter, a second counter, and a processor, the controller unit coupled to the first and second sets of switches, the integrator, and the comparator.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: October 29, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jerry Lee Doorenbos, Keith Eric Sanborn, Srikanth Vellore Avadhanam Ramamurthy, Mina Raymond Naguib Nashed, Dwight David Griffin
  • Patent number: 10305507
    Abstract: A first-order sigma-delta analog-to-digital converter includes an input terminal, an integrator circuit, a comparator, and control circuitry. The input terminal is configured to receive a unipolar input signal to be digitized. The integrator circuit is coupled to the input terminal. The comparator is coupled to an output of the integrator circuit. The control circuitry is coupled to the integrator circuit and the comparator. The control circuitry is configured to equalize time that an output signal generated by the integrator circuit is greater than zero and time that the output signal generated by the integrator circuit is less than zero during digitization of the unipolar input signal.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: May 28, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jerry Lee Doorenbos, Keith Eric Sanborn, Mina Raymond Naguib Nashed, Srikanth Vellore Avadhanam Ramamurthy, Dwight David Griffin
  • Patent number: 8698545
    Abstract: Multiplier circuitry includes first multiplier circuit including a first transistor having an emitter coupled to a first conductor, a base coupled to a second conductor, and a collector coupled to a third conductor, a second transistor having an emitter coupled to the first conductor, a base coupled to a fourth conductor, and a collector coupled to a fifth conductor, a third transistor having an emitter coupled to the second conductor and a base and collector coupled to a supply voltage, and a fourth transistor having an emitter coupled to the fourth conductor and a base and collector coupled to the supply voltage. Chopper includes a first switch to provide a chopped differential signal between the second and fourth conductors and a second switch for un-chopping a first differential output signal produced between the third and fifth conductors to provide an un-chopped differential output signal between the third and fifth conductors.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: April 15, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Tony R. Larson, Srikanth Vellore Avadhanam Ramamurthy, Dimitar T. Trifonov
  • Publication number: 20130257507
    Abstract: Multiplier circuitry includes first multiplier circuit including a first transistor having an emitter coupled to a first conductor, a base coupled to a second conductor, and a collector coupled to a third conductor, a second transistor having an emitter coupled to the first conductor, a base coupled to a fourth conductor, and a collector coupled to a fifth conductor, a third transistor having an emitter coupled to the second conductor and a base and collector coupled to a supply voltage, and a fourth transistor having an emitter coupled to the fourth conductor and a base and collector coupled to the supply voltage. Chopper includes a first switch to provide a chopped differential signal between the second and fourth conductors and a second switch for un-chopping a first differential output signal produced between the third and fifth conductors to provide an un-chopped differential output signal between the third and fifth conductors.
    Type: Application
    Filed: April 3, 2012
    Publication date: October 3, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Tony R. Larson, Srikanth Vellore Avadhanam Ramamurthy, Dimitar T. Trifonov