Patents by Inventor Maria F. Carreto

Maria F. Carreto 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).

  • Extremely linear, high speed, class AB rail to rail bipolar amplifier output stage with high output drive
    Patent number: 6542032
    Abstract: The amplifier output stage circuit includes: a translinear loop 30 having first and second input nodes Vin+ and Vin−; a first transistor Q7 coupled between a first output node of the translinear loop 30 and a first supply node V+; a first output transistor Q9 coupled between an output node 36 of the circuit and the first supply node V+, and having a base coupled to a base of the first transistor Q7; a second transistor Q10 coupled between a second output node of the translinear loop 30 and a second supply node V−; a second output transistor Q12 coupled between the output node 36 of the circuit and the second supply node V−, and having a base coupled to a base of the second transistor Q10.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: April 1, 2003
    Assignee: Texas Instruments Incorporated
    Inventors: Priscilla Escobar-Bowser, Maria F. Carreto
  • Extremely linear, high speed, class AB rail to rail bipolar amplifier output stage with high output drive
    Publication number: 20020101286
    Abstract: The amplifier output stage circuit includes: a translinear loop 30 having first and second input nodes Vin+ and Vin−; a first transistor Q7 coupled between a first output node of the translinear loop 30 and a first supply node V+; a first output transistor Q9 coupled between an output node 36 of the circuit and the first supply node V+, and having a base coupled to a base of the first transistor Q7; a second transistor Q10 coupled between a second output node of the translinear loop 30 and a second supply node V−; a second output transistor Q12 coupled between the output node 36 of the circuit and the second supply node V−, and having a base coupled to a base of the second transistor Q10.
    Type: Application
    Filed: November 28, 2001
    Publication date: August 1, 2002
    Inventors: Priscilla Escobar-Bowser, Maria F. Carreto