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Dive into the research topics where Dennis A. Dempsey is active.

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Featured researches published by Dennis A. Dempsey.


international solid-state circuits conference | 1995

A 3 V GSM codec

P. Minogue; P. Weeks; J. Morrissey; S. Patterson; P. Crowley; H. Tucholski; Dennis A. Dempsey; D. Hitchcox; P. Shepherd; P. Sheridan; A.J. Kelly; P. Heraty; C. McAuliffe; Mike Keaveney; M. O'Connor; P. Dillon; A.L. Kelly; G. Coffey; M. McCarthy; P. Costigan

Designed to satisfy the data conversion requirements of the Pan-European (GSM) cellular radio system, the chip is part of a four chip-set total GSM solution comprising the codec, the DSP, the digital ASIC, and the micro-controller. Fabricated in a 0.8 /spl mu/m double-poly, double-metal CMOS process, the integrated circuit combines a voiceband codec with a baseband codec plus auxiliary converters in an 80-pin TQFP package while running off a single 3 V power supply.


Archive | 2000

Architecture for voltage scaling DAC

Dennis A. Dempsey


Archive | 2002

Bandgap reference source

Dennis A. Dempsey; Stefan Marinca


Archive | 1996

Switch architecture for R/2R digital to analog converters

Dennis A. Dempsey; Michael G. Tuthill; Martin G. Cotter


Archive | 2007

Low voltage bandgap reference source

Dennis A. Dempsey; Stefan Marinca


Archive | 2004

Impedance network with minimum contact impedance

Dennis A. Dempsey


Archive | 2003

System and method for digital compensation of digital to analog and analog to digital converters

Dennis A. Dempsey; Thomas G. O'Dwyer; Oliver James Brennan; Alan Walsh; Tudor Vinereanu


Archive | 2006

DIGITAL TO ANALOG CONVERTER WITH SHARED CALIBRATION

Gavin P. Cosgrave; Colin G. Lyden; Roderick McLachlan; Dennis A. Dempsey; Tudor Vinereanu; Patrick Kirby


Archive | 2009

Reactive networks to reduce acoustic noise and ensure maximum efficiencies in driving piezoelectric elements in haptic applications

Mark J. Murphy; Alan Gillespie; Eoin Edward English; Donal Geraghty; Dennis A. Dempsey


Archive | 2001

Method and apparatus for device interface

Dennis A. Dempsey; Thomas G. O'Dwyer; Oliver James Brennan; Helen Stapleton; Alan Walsh; Tudor Vinereanu

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