Itisha T Tyagi

US Patent:

20190268696, Aug 29, 2019

Filed:

Feb 27, 2019

Appl. No.:

16/287235

Inventors:

- Edinburgh, GB
Anthony S. DOY - Los Gatos CA, US
Itisha TYAGI - Austin TX, US

Assignee:

Cirrus Logic International Semiconductor Ltd. - Edinburgh

International Classification:

H04R 3/00
H04R 17/00
H04R 29/00

Abstract:

A method of fabricating a piezoelectric transducer may include interleaving a plurality of layers of piezoelectric material with a plurality of conductive layers including a first conductive layer, one or more second conductive layers, and one or more third conductive layers, coupling the first conductive layer to a first electrode, wherein an electrical impedance of the first conductive layer varies as a function of a temperature internal to the piezoelectric transducer, and such that a measurement signal indicative of the electrical impedance is generated at the first electrode, coupling the one or more second conductive layers to a second electrode, and coupling the one or more third conductive layers to a third electrode, such that an electrical driving signal driven to the second electrode and the third electrode causes mechanical vibration of the piezoelectric transducer as a function of the electrical driving signal.

US Patent:

20190260333, Aug 22, 2019

Filed:

Feb 11, 2019

Appl. No.:

16/272215

Inventors:

- Edinburgh, GB
Itisha TYAGI - Austin TX, US

Assignee:

Cirrus Logic International Semiconductor Ltd. - Edinburgh

International Classification:

H03F 1/30
H03F 13/00
G01R 27/08
G01R 27/26

Abstract:

A method for controlling one or more parameters of an amplifier system may include receiving an indication of a physical quantity associated with the amplifier system, determining one or more parameters of the amplifier system in response to the indication, and causing the amplifier system to operate in accordance with the one or more parameters.

US Patent:

20190028807, Jan 24, 2019

Filed:

Jul 20, 2018

Appl. No.:

16/040853

Inventors:

- Edinburgh, GB
Itisha TYAGI - Austin TX, US
John L. MELANSON - Austin TX, US

Assignee:

Cirrus Logic International Semiconductor Ltd. - Edinburgh

International Classification:

H04R 7/04

Abstract:

Embodiments described herein provide an audio device and a method of operating the audio device. The audio device comprises at least one surface, a first surface transducer positioned to excite first modes of oscillation in a first surface of the at least one surface, and a second surface transducer positioned to excite second modes of oscillation in a second surface of the at least one surface, wherein the first modes of oscillation are of a higher frequency than the second modes of oscillation.

US Patent:

20170138990, May 18, 2017

Filed:

Mar 14, 2016

Appl. No.:

15/069518

Inventors:

- Edinburgh, GB
Itisha Tyagi - Austin TX, US

International Classification:

G01R 19/10
H03F 1/02
H04R 3/00
H03F 3/45

Abstract:

The overall performance of a current sense amplifier system may be improved by increasing the common mode rejection of the system. In particular, improved current sense amplifier systems of this disclosure may be configured to use a first ADC path to measure a current flowing through a device, a second ADC path to measure a common mode value, a memory element to store a calibration value, and a summer block to output a voltage proportional to the measured current through the device by correcting a voltage value output by the first ADC path based on the measured common mode value of the second ADC path and the stored calibration value.

US Patent:

20170141732, May 18, 2017

Filed:

Mar 14, 2016

Appl. No.:

15/069733

Inventors:

- Edinburgh, GB
Itisha Tyagi - Austin TX, US

International Classification:

H03F 1/02
H03F 3/45

Abstract:

The overall performance of a current sense amplifier system may be improved by increasing the common mode rejection of the system. In particular, improved current sense amplifiers may be configured to use a first signal path coupled to the amplifier and a first input terminal, wherein the first signal path is configured to measure the current through a device by generating a voltage proportional to the measured current, wherein the generated voltage comprises a small signal voltage with a large common mode voltage, and a second signal path coupled to the amplifier and the first input terminal, wherein the second signal path is configured to reduce the common mode of the generated voltage by level shifting the generated voltage to reduce the common mode voltage.