Patent ID: 9473130
Filing Date: 2016-10-18
CPC Classification: G06F,H02J,H03K

Claim Text:
1. An apparatus comprising: a first circuit having a nonlinear oscillator and configured and arranged to generate a sawtooth waveform output; a second circuit coupled to receive the sawtooth waveform output and configured and arranged to generate a trapezoidal waveform output using the sawtooth waveform output; a comparator circuit configured and arranged to generate a clock signal based upon the sawtooth waveform output and the trapezoidal waveform output; wherein the nonlinear oscillator is configured and arranged to generate the sawtooth waveform output using a biasing current and is susceptible to temperature-based fluctuations that alter the sawtooth waveform output under a fixed biasing current, and further including a complementary to absolute temperature (CTAT) current reference circuit configured and arranged to control operation of the nonlinear oscillator by generating the biasing current at different levels in response to the temperature-based fluctuations.