Patent ID: 7525394
Filing Date: 2009-04-28
Classification: H03K

Abstract:
1. An ultra low power CMOS oscillator for low frequency clock generation, comprising: a reference current source; first and second switch members coupled to the reference current source; first and second thyristor-based inverters; and a first capacitor having an electrode coupled to receive a reference potential, and another electrode coupled to the first switch member, to the input of the first thyristor-based inverter, and to the output of the second thyristor-based inverter; a second capacitor having an electrode coupled to receive a reference potential, and another electrode coupled to the second switch member, to the input of the second thyristor-based inverter, and to the output of the first thyristor-based inverters; the circuit being configured and adapted to operate so that the first and second capacitors are alternatingly charged by the reference current source and discharged by the thyristor-based inverters.