Inventor

SWANSON ERIC J

US55 patents

⚠️ This page may combine multiple inventors who share the name “SWANSON ERIC J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SWANSON ERIC J

CRYSTAL SEMICONDUCTOR CORP

Diagnosing problems in an electrical system by monitoring changes in nonlinear characteristics

Linear phase finite impulse response filter with pre-addition

Combining continuous time and discrete time signal processing in a delta-sigma modulator

Delta-sigma modulator with oscillation detect and reset circuit

Method for reducing effects of electrical noise in an analog-to-digital converter

Variable decimation architecture for a delta-sigma analog-to-digital converter

Current limited current reference for non-volatile memory sensing

Method and apparatus for calibration of a monolithic voltage reference

Switched-capacitor filter having digitally-programmable capacitive element

Sampling circuit charge management

Low noise transmission of output data from a delta-sigma modulator

Detent switching of summing node capacitors of a delta-sigma modulator

Amplifier with controlled output impedance

Combining fully-differential and single-ended signal processing in a delta-sigma modulator

Phase equalization system for a digital-to-analog converter utilizing separate digital and analog sections

Method and apparatus for storing digital audio and playback thereof

Multiple function analog-to-digital converter with multiple serial outputs

CIRRUS LOGIC INC

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

Gain ranging analog-to-digital converter with error correction

Error detection scheme for a high-speed data channel

Analog modulator for A/D converter utilizing leap-frog filter

Polling to determine optimal impedance

Wireless earpiece with local audio cache

Delta-sigma analog-to-digital converter circuit having reduced sampled reference noise

Gate-boosted, variable voltage supply rail amplifier

Analog to digital converter having digital signal processing with a negative logic supply rail

Wireless earpiece with local audio cache

Wireless earpiece with local audio cache

Grounding scheme for a high-speed data channel

(unassigned)

Analog to digital conversion circuitry including backup conversion circuitry

Autoranging analog to digital conversion circuitry

Autoranging analog to digital conversion circuitry

Analog to digital converter utilizing a highly stable resistor string

Programmable gain preamplifier coupled to an analog to digital converter

Programmable gain preamplifier

AT & T BELL LAB

Gate-coupled field-effect transistor pair amplifier

Mixed threshold current mirror

Floating input comparator with precharging of input parasitic capacitors

Compound current mirror

Corrected sample-and-hold circuit

Switched capacitor feedback sample-and-hold circuit

CRYSTAL SEMICONDUCTOR

Method and circuitry for decreasing the recovery time of an MOS differential voltage comparator

Method and apparatus for synchronizing an optical transceiver over a full duplex data communication channel

Linear channel bandwidth calibration circuit

Method and apparatus for removing trapped oxide charge from a differential input stage

CRYSTAL SEMICONDUCTOR INC

Analog-to-digital converter with a continuously calibrated voltage reference

Method and apparatus for calibrating a multi-bit delta-sigma modular

ZHANG LINGLI

Pulse-width modulated (PWM) audio power amplifier having output signal magnitude controlled pulse voltage and switching frequency

TSANG ROBIN MATTHEW

Audio amplifier offset reduction using digital input/output comparisons

CIRRUS LOGIC INT SEMICONDUCTOR LTD

Headset management by microphone terminal characteristic detection