Inventor

PERROTT MICHAEL H

US58 patents

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

PERROTT MICHAEL H

SILICON LAB INC

Feedback system incorporating slow digital switching for glitch-free state changes

Auto-detection between referenceless and reference clock mode of operation

Digitally-synthesized loop filter circuit particularly useful for a phase locked loop

Method and apparatus for switching between input clocks in a phase-locked loop

Digitally-synthesized loop filter circuit particularly useful for a phase locked loop

Digital phase detector circuit and method therefor

Apparatus and method for decimating a digital input signal

Offset correction and slicing level adjustment for amplifier circuits

Time-to-voltage converter using a capacitor based digital to analog converter for quantization noise cancellation

Cancellation of spurious tones within a phase-locked loop with a time-to-digital converter

Cancellation of delta-sigma quantization noise within a fractional-N PLL with a nonlinear time-to-digital converter

Time-to-digital converter based on a voltage controlled oscillator

Method and apparatus for bit error rate detection

Method and apparatus for acquiring a frequency without a reference clock

Digitally-synthesized loop filter method and circuit particularly useful for a phase locked loop

Integrated circuit incorporating circuitry for determining which of at least two possible frequencies is present on an externally provided reference signal and method therefor

Hybrid analog and digital control of oscillator frequency

Fractional-N phase-locked loop

Feedback system incorporating slow digital switching for glitch-free state changes

Clock and data recovery circuit without jitter peaking

Amplifier topology achieving high DC gain and wide output voltage range

Method and apparatus for determining a loss of signal condition

Calibration of a loss of signal detection system

INVENSENSE INC

Transmit beamforming of a two-dimensional array of ultrasonic transducers

Transmit operation of an ultrasonic sensor

Operation of an ultrasonic sensor

Two-dimensional array of CMOS control elements

Operation of an ultrasonic sensor

Receive operation of an ultrasonic sensor

Two-dimensional array of CMOS control elements

Multipath digital microphones

Receive operation of an ultrasonic sensor

Operating a fingerprint sensor comprised of ultrasonic transducers

Image generation in an electronic device using ultrasonic transducers

Transmit beamforming of a two-dimensional array of ultrasonic transducers

SITIME CORP

Capacitor-referenced temperature sensing

Phase locked loop circuitry having switched resistor loop filter circuitry, and methods of operating same

Temperature-compensated timing signal generator

Phase locked loop circuit with oscillator signal based on switched impedance network

High-gain locked-loop phase detector

Phase locked loop circuitry having switched resistor loop filter circuitry, and methods of operating same

SiTime Coporation

Phase locked loop with switched-component loop filter

Temperature sensor with frequency-controlled reference

Phase locked loop with phase error signal used to control effective impedance

PLL with accelerated frequency lock

Capacitor-referenced temperature sensing

PERROTT MICHAEL H

Circuitry and techniques for resistor-based temperature sensing

Phase locked loop circuitry having switched resistor loop filter circuitry, and methods of operating same

MASSACHUSETTS INST TECHNOLOGY

Digital compensation for wideband modulation of a phase locked loop frequency synthesizer

TEXAS INSTRUMENTS INC

Digital-to-time converter mismatch compensation