Temperature correcting current-controlled ring oscillators

摘要

A thermally-compensated oscillator (12) has a current reference (9) with an output current which relates to an ambient temperature with a first relationship, a ring oscillator (10) having an operating frequency which relates to the ambient temperature with a second relationship, and which receives the output current of the current reference (9) and outputs an oscillator signal, and a level shifter (11) which receives the oscillator signal from the ring oscillator (10) and outputs a corresponding voltage-regulated clock signal (CLK).