Apparatus and method for temperature measurement and/or calibration via resonant peaks in an oscillator

1. A circuit providing resonant peaks for utilization for temperature measurements wherein a plurality of said resonant peaks are utilized comprising

a resonant device consisting of an oscillator for providing an oscillating source;

a variable gain-bandwidth amplifier and/or constant bandwidth amplifier in parallel with said resonant device for providing modulation of the gain and/or bandwidth driving said resonant device, and control of resonant peaks for selection for oscillation;

a first capacitor electrically coupled to the parallel combination of the input of said variable gain-bandwidth amplifier and/or constant bandwidth amplifier, and said resonant device for providing charge storage for oscillation; and,

a second capacitor electrically coupled to parallel combination of the output of said variable gain-bandwidth amplifier and/or said constant bandwidth amplifier, and said resonant device for providing charge storage for oscillation.

2. The circuit of claim 1 wherein said circuit functions in at least one mode of operation.

3. The circuit of claim 2 wherein said circuit operates in an active mode of operation, wherein said active mode is a higher gain-bandwidth mode where the said circuit locks on to the resonant peak and oscillates at a higher frequency with only a small variation of frequency with respect to temperature.

4. The circuit of claim 3 wherein said circuit is the clock to be used as the main generated system clock.

5. The circuit of claim 2 wherein said circuit operates in a temperature sensor mode of operation wherein the temperature sensor mode is a lower gain-bandwidth mode wherein said circuit locks onto a secondary resonant peak at a lower frequency, which has a much higher frequency variation with respect to temperature.

6. The circuit of claim 5 wherein said circuit is utilized as a temperature a temperature sensor and used to calibrate the main system clock.

7. The circuit of claim 1 wherein said resonant peaks for selection of operation is the fundamental resonant peak.

8. The circuit of claim 1 wherein said resonant peaks for selection of operation is the second resonant peak.

9. The circuit of claim 1 wherein said resonant peaks for selection is the tertiary resonant peak.

10. The circuit of claim 1 wherein said resonant peaks for selection is any higher order resonant peak.

11. The circuit of claim 5 wherein said circuit eliminates the phase lag between the actual temperature of a component being monitored and the temperature as measured by the temperature sensor.

12. The circuit of claim 5 wherein said circuit allows for real-time transient response temperature measurements on the semiconductor chip.

13. The circuit of claim 5 wherein said circuit accurately measures the step-response to a change in temperature of an oscillator or other temperature sensitive component to allow for on-the-fly temperature compensation.

14. The circuit of claim 5 wherein said circuit is responsive allows for quick and accurate performance of a multi-point temperature calibration within the timing limits imposed by production test.

15. A circuit providing resonant peaks for utilization for temperature measurements comprising

an adjustable/switchable filter;

a constant gain-bandwidth amplifier in parallel configuration with said adjustable/switchable filter for providing modulation of the gain and/or bandwidth driving resonator device, and control of resonant peaks for selection for oscillation;

a first capacitor electrically coupled to the parallel combination of the input of said variable gain-bandwidth amplifier, and/or constant bandwidth amplifier, and electrically coupled to ground potential and said resonant device for providing charge storage for oscillation; and,

a second capacitor electrically coupled to parallel combination of the output of said variable gain-bandwidth amplifier, and/or constant bandwidth amplifier, and electrically coupled to ground potential and said resonant device for providing charge storage for oscillation.