Lalinda Damita Fernando

US Patent:

8274414, Sep 25, 2012

Filed:

Dec 10, 2009

Appl. No.:

12/635213

Inventors:

Lalinda D. Fernando - Burlington MA, US
Michael C. W. Coln - Lexington MA, US

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H03M 1/48

US Classification:

341116, 341112

Abstract:

An interface system between an RDC and a connected resolver dynamically matches an input range of the RDC to the output range of the resolver's output signals. The interface system may include methods and/or apparatuses to determine the amplitude of sinusoidal input signals presented to the RDC by the resolver and to compare the amplitude against high and low threshold values. A gain control signal may be generated, which may be corrected if the detected amplitude either exceeds the high threshold or falls below the low threshold. The gain control signal may be output to a circuit in the RDC or in the resolver that corrects any mismatch that occurs between the RDC input and the resolver output. For example, the gain control signal may control the amplitude of an excitation signal applied to a primary of the resolver or the gain control signal may be applied to an analog to digital converter at the input of the RDC to control its effective input range.

US Patent:

20110304488, Dec 15, 2011

Filed:

Jul 29, 2010

Appl. No.:

12/846649

Inventors:

Lalinda FERNANDO - Burlington MA, US
Michael COLN - Lexington MA, US

Assignee:

ANALOG DEVICES, INC. - Norwood MA

International Classification:

H03M 1/48

US Classification:

341116

Abstract:

A system and method for reducing noise in resolver-to-digital converters (RDC) using a cascaded tracking loop filter. In some embodiments, one or more tracking loop filters may be implemented in a cascade to attenuate carrier harmonic frequencies in the digitized output of an RDC. Where a plurality of tracking loop filters are implemented, the output of one tracking loop filter may be input into a successive tracking loop filter.

US Patent:

20230042083, Feb 9, 2023

Filed:

Sep 9, 2022

Appl. No.:

17/942043

Inventors:

- Wilmington MA, US
Lalinda D. FERNANDO - Westford MA, US

Assignee:

Analog Devices, Inc. - Wilmington MA

International Classification:

G01F 23/263
A61M 5/168

Abstract:

A sensor for measuring the contents of a syringe or other container is described. The sensor includes a voltage source, a pair of electrodes, a measurement circuit, and an electrode shield. The voltage source is coupled to the electrodes, and the electrodes apply an electric field through at least a portion of the container or syringe. The measurement circuit measures capacitance across the electrodes. The electrode shield partially encloses the pair of electrodes. The electrode shield may include an inner electrode shield having a second voltage, and an outer electrode shield having a third voltage.

US Patent:

20200176555, Jun 4, 2020

Filed:

Dec 4, 2018

Appl. No.:

16/209768

Inventors:

- Norwood MA, US
Lalinda D. Fernando - Westford MA, US
Micah Galletta O'Halloran - Andover MA, US
Andrew Wayne Shaw - Dorchester MA, US

International Classification:

H01L 49/02
H01L 27/02

Abstract:

A self-routing capacitor for an integrated circuit having: a first electrode comprising a first base region and a first finger, the first finger extending from a wall of the first base region in a first direction; a second electrode comprising a second base region and a second finger, the second finger extending from a wall of the second base region in a second direction substantially parallel to and opposing the first direction, the second finger coupled to the first finger; a third electrode comprising a third base region and a third finger, the third finger extending from a first wall of the third base in the second direction; and a fourth electrode comprising a fourth finger, the fourth finger extending from a second wall of the third base region in the first direction. The capacitor being coupled to other metal layers through a base region of an electrode.

US Patent:

20190081636, Mar 14, 2019

Filed:

Jul 19, 2018

Appl. No.:

16/040140

Inventors:

- Norwood MA, US
Lalinda D. Fernando - Westford MA, US
Zhichao Tan - Westford MA, US

International Classification:

H03M 1/46

Abstract:

A method of performing analog-to-digital conversion using a successive approximation (SAR) analog-to-digital converter (ADC). A previous digital output is compared to a range based on the first M bits of the previous digital output. If the previous digital output is within that range, a digital-to-analog converter (DAC) of the SAR ADC is preloaded with the first M bits of the previous digital output, prior to commencing bit trials. If the previous digital output is outside of that range, an offset is applied to the first M bits of the previous digital output and the DAC is preloaded based on the M bits and the offset, prior to performing bit trials. This method reduces the possibility of the next input being outside of a further range defined by the preload.

US Patent:

20170319260, Nov 9, 2017

Filed:

May 5, 2017

Appl. No.:

15/587622

Inventors:

- Norwood MA, US
Christopher W. Hyde - Hollis NH, US
Michael C. W. Coln - Lexington MA, US
Lalinda D. Fernando - Westford MA, US

International Classification:

A61B 18/12
A61B 18/14
A61B 18/00
A61B 18/00
A61B 18/00

Abstract:

According to one configuration, a controller controls use of multiple medical devices at a medical site. For example, a first medical device at the medical site is operable to perform one or more tissue ablation operations; a second medical device at the medical site is operable to perform non-ablation operations (such as tissue monitoring operations). The controller implements a control sequence to control switching between different operational modes including a first mode and a second mode. The first mode and corresponding first windows of time enable the first medical device to perform an ablation operation; the second mode and corresponding windows of time disable the first medical device from performing the ablation operation so that the second medical device operates without interference from the first medical device performing the ablation operation.

US Patent:

20140333463, Nov 13, 2014

Filed:

May 10, 2013

Appl. No.:

13/891988

Inventors:

- Norwood MA, US
Lalinda D. Fernando - Westford MA, US

Assignee:

ANALOG DEVICES, INC. - Norwood MA

International Classification:

H03M 1/12

US Classification:

341155

Abstract:

The present disclosure provides for split-path data acquisition chains and associated signal processing methods. An exemplary integrated circuit for providing a split-path data acquisition signal chain includes an input terminal for receiving an analog signal; an output terminal for outputting a digital signal; and at least two frequency circuit paths coupled with the input terminal and the output terminal, wherein the at least two frequency circuit paths are configured to process different frequency components of the analog signal and recombine the processed, different frequency components, thereby providing the digital signal.