Daniel John Allen

Opportunistic playback state changes for audio devices

Identification of a load with a search algorithm that controls application of signals to the load and a reference generator

Direct current (DC) and/or alternating current (AC) load detection for audio codec

Energy-efficient consumer device audio power output stage with gain control

Systems and methods for controlling an audio signal path using redundant uninterruptable clock

Charge-pump power supply with voltage-headroom-dependent supply voltage

Enhancement of dynamic range of audio signal path

Systems and methods for detection of load impedance of a transducer device coupled to an audio device

Feedback loop for direct current (DC) offset removal

Energy-efficient consumer device audio power output stage

Systems and methods for detection of load impedance of a transducer device coupled to an audio device

Systems and methods for detection of load impedance of a transducer device coupled to an audio device

Reducing kickback current to power supply during charge pump mode transitions

Noise management method and circuit for asynchronous signals

Headset type detection and configuration techniques

Low-noise voltage reference generator with digitally-filtered reference matching

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

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

Energy-efficient consumer device audio power output stage

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