Systems and methods for self-calibration
View Patent ↗A self-calibrating integrated circuit includes a processor having at least one analog function used with the processor; one or more sensors adapted to sense one or more environmental parameters of the at least one analog function; and a solid state memory being configured to store the one or more environmental parameters of the at least one analog function.
1. An integrated circuit, comprising:
a processor having at least one analog function used with the processor;
a radio frequency circuit coupled to the processor;
one or more sensors adapted to sense one or more environmental parameters of the at least one analog function; and
a solid state memory being configured to store the one or more environmental parameters of the at least one analog function.
2. The integrated circuit of claim 1 , wherein said at least one analog function is an oscillator.
3. The integrated circuit of claim 1 , wherein the one or more environmental parameters includes temperature or supply voltage.
4. The integrated circuit of claim 1 , wherein the one or more sensors include one or more temperature sensors.
5. The integrated circuit of claim 1 , wherein the one or more sensors include diodes with metallization to screen out leakage-causing light.
6. The integrated circuit of claim 1 , wherein the one or more sensors include one or more hot-electron sensors.
7. The integrated circuit of claim 1 , wherein the one or more sensors include deep well diodes.
8. The integrated circuit of claim 1 , wherein the one or more sensors include one or more hot electron generators.
9. The integrated circuit of claim 1 , wherein the one or more sensors include ring oscillator-based hot electron generators.
10. The integrated circuit of claim 1 , wherein the one or more sensors include one or more heaters.
11. The integrated circuit of claim 1 , wherein the one or more sensors include polysilicon resistor heater placed over a diode and transistors.
12. The integrated circuit of claim 1 , wherein the outputs of the sensors are provided to an analog switch.
13. The integrated circuit of claim 1 , further comprising an analog to digital converter (ADC) coupled to the processor.
14. The integrated circuit of claim 13 , wherein the ADC is shared with an on-chip mixed-signal circuit.
15. The integrated circuit of claim 13 , further comprising a multiplexor coupled to the ADC to share the ADC with autocalibration functions.
16. The integrated circuit of claim 13 , wherein the ADC operates at a low frequency.
17. The integrated circuit of claim 13 , wherein the ADC comprises a delta-sigma ADC.
18. An integrated circuit, comprising:
a processor;
a radio frequency circuit coupled to the processor;
an oscillator coupled to the processor and the radio frequency circuit, the oscillator having a frequency varied by one or more environmental parameters;
one or more sensors adapted to sense one or more environmental parameters; and
a solid state memory being configured to store the one or more environmental parameters of the at least one analog function.
19. The integrated circuit of claim 18 , wherein the one or more environmental parameters includes temperature or supply voltage.
20. The integrated circuit of claim 18 , wherein the one or more sensors include one or more temperature sensors.