Cypress Semiconductor Corporation

Michael McMenamy

Jonathon C Stiff

Adam El-Mansouri

Mandonev Rajasekaran

An amplitude control circuit () can include a peak level detect circuit () that generates a peak voltage signal (Vpeak') based on a peak level of signal Xosc. An amplitude bias control circuit () can generate a bias voltage Vbc that can correspond to a peak amplitude of a received oscillator signal Xosc, and can change according to variations in a transistor threshold voltage due to process, operating conditions and voltage.

Oscillator amplitude control network

Disclosed is an oscillator circuit, comprising a crystal oscillator, an amplifier having an input and an output coupled across the crystal oscillator, a comparator having a reference input and an input coupled to the crystal oscillator and a pole network coupled between the comparator and the amplifier.

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Tensed, ID, United States of America

Michael McMenamy