Patent ID: 11909354
Assignee: SITIME CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 26:
27. An integrated circuit comprising:
a first die having at least one microelectromechanical systems (MEMS) resonant structure, the first die to generate two signals representing respective resonant frequencies;
a second die having at least one transistor;
a third die having circuitry, including memory, the circuitry of the third die to:
store temperature-dependent control information, in the memory, and
use the at least one MEMS resonant structure as a sensor to identify a digital temperature corresponding to a temperature experienced by the at least one MEMS resonant structure, dependent on divergence of resonant frequencies identified from two signals; and

the integrated circuit further comprising a heating element, a thermally conductive element and an insulator, the heating element to raise the temperature experienced by the first die and the second die to a predetermined temperature that is different than a temperature of an ambient environment external to said integrated circuit, the insulator to insulate the third die from experiencing the predetermined temperature, the thermally conductive element coupling the third die with the ambient environment, so as to urge the third die to the temperature of the ambient environment;
wherein the integrated circuit is to output, via an external contact of said integrated circuit, a timing signal, the timing signal being dependent on at least one of the respective resonant frequencies, the timing signal generated using each of the at least one transistor of the second die and the circuitry of the third die.