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Dive into the research topics where Daniel John Allen is active.

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Featured researches published by Daniel John Allen.


european solid-state circuits conference | 2006

Low Cost, Single-ended, 2M Ohm Input Impedance 98dB Stereo Audio A/D Converter With a Novel Front-end Sampling Network

Gong Tom Lei; Daniel John Allen; Thuan Luong Nguyen; Karl Thompson; John L. Melanson

A single-ended multibit delta-sigma stereo audio ADC is presented. A 3rd-order single-loop 10-level feed forward delta-sigma modulator is implemented. A feed forward stage and a rough/fine input sampling scheme combined with a novel front-end sampling network allows wide dynamic range at lower power, smaller die size and larger than 2M ohm input impedance. A second order mismatch shaper removes any nonlinearity or tones caused by element mismatch in the feedback DAC. It achieves 98dB dynamic range and 105dB THD with 0.5k ohm of source impedance while dissipating 60mW@5V. The chip occupies 2-mm2 area in 0.25mum-process and fits into a tiny 10-pin TSSOP package


Archive | 2006

Energy-efficient consumer device audio power output stage

John Christopher Tucker; Daniel John Allen; John L. Melanson; Ammisetti Prasad


Archive | 2014

Multi-path analog front end and analog-to-digital converter for a signal processing system

Edmund M. Schneider; Aniruddha Satoskar; Daniel John Allen; Seyedeh Maryam Mortazavi Zanjani


Archive | 2013

SYSTEMS AND METHODS FOR DETECTION OF LOAD IMPEDANCE OF A TRANSDUCER DEVICE COUPLED TO AN AUDIO DEVICE

Anand Ilango; Daniel John Allen; Aniruddha Satoskar


Archive | 2009

Operating environment and process position selected charge-pump operating mode in an audio power amplifier integrated circuit

Scott Allan Woodford; Daniel John Allen; Eric J. Swanson


Archive | 2005

Delta-sigma modulators with double sampling input networks and systems using the same

Gong Tom Lei; Thuan Luong Nguyen; Daniel John Allen; John L. Melanson


Archive | 2013

Enhancement of dynamic range of audio signal path

Aniruddha Satoskar; Daniel John Allen; Tejasvi Das


Archive | 2009

Signal level selected efficiency in a charge pump power supply for a consumer device audio power output stage

Scott Allan Woodford; Daniel John Allen


Archive | 2012

Headset type detection and configuration techniques

Daniel John Allen; Thuan Luong Nguyen; Anand Ilango; John Christopher Tucker


Archive | 2016

SYSTEMS AND METHODS FOR REDUCING ARTIFACTS AND IMPROVING PERFORMANCE OF A MULTI-PATH ANALOG-TO-DIGITAL CONVERTER

Aniruddha Satoskar; Daniel John Allen; Edmund M. Schneider

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