A calibration device, method and electronic device using the same provided by embodiments of the present disclosure only need to measure frequency values of two temperatures, then calculate frequency drift rates of various configuration combinations, and select the configuration combination with the smallest frequency drift rate to set configuration values of a trimming module. Thus, the test time can be reduced. In one embodiment, a simple heating device can be directly disposed on the chip package structure of the electronic device, so it is not necessary to use an external heating device for heating, and the environmental space required for placing the external heating device can be reduced.

An integrated circuit device includes a digital signal processing circuit that generates frequency control data by performing a temperature compensation process by a neural network calculation process based on temperature detection data and an amount of change in time of the temperature detection data, and an oscillation signal generation circuit that generates an oscillation signal of a frequency set by the frequency control data using a resonator.

A stress compensated oscillator circuitry comprises a sensor arrangement for providing a sensor output signal S.sub.Sensor, wherein the sensor output signal S.sub.Sensor is based on an instantaneous stress or strain component in the semiconductor substrate, a processing arrangement for processing the sensor output signal S.sub.Sensor and providing a control signal S.sub.Control depending on the instantaneous stress or strain component in the semiconductor substrate, and an oscillator arrangement for providing an oscillator output signal S.sub.osc having an oscillator frequency f.sub.osc based on the control signal S.sub.Control, wherein the control signal S.sub.Control controls the oscillator output signal S.sub.osc, and wherein the control signal S.sub.Control reduces the influence of the instantaneous stress or strain component in the semiconductor substrate onto the oscillator output signal S.sub.osc, so that the oscillator circuitry provides a stress compensated oscillator output signal.

An apparatus includes a temperature sensor, a digitally-controlled capacitor and a processor. The temperature sensor is coupled to a crystal oscillator and configured to generate an input signal depending on a temperature of the crystal oscillator. The digitally-controlled capacitor is connected to the crystal oscillator and configured to receive a control signal and, based on the control signal, to control a frequency of an output signal generated by the crystal oscillator. The processor is configured to receive the input signal from the temperature sensor, to convert the input signal into the control signal based on parameters that characterize the crystal oscillator and the digitally-controlled capacitor, and to apply the control signal to the digitally-controlled capacitor.

An oven controlled crystal oscillator includes a crystal oscillator, a temperature control circuit, and a control integrated circuit. The crystal oscillator includes a crystal resonator and an oscillator circuit. The temperature control circuit includes a heater resistor, a thermistor, a first resistor, a second resistor, a third resistor, a differential amplifier, a thermosensor, and a fourth resistor. The thermosensor is disposed in parallel to the first resistor. The thermosensor has one end to which the supply voltage is supplied. The fourth resistor has one end connected to another end of the thermosensor and another end that is grounded. The control integrated circuit includes a digital variable resistor and a controller. The digital variable resistor is connected to the thermosensor in parallel. The controller adjusts a resistance value of the digital variable resistor based on a digital control signal input from outside.

An electronic device includes a drive section, a detection signal output section adapted to generate a first analog signal having a value varying in accordance with a physical quantity, and a control section adapted to generate a second analog signal controlled based on the first analog signal, and adapted to control a drive state of the drive section, at least the detection signal output section and the control section are provided to a substrate, and a first digital signal obtained by digitalizing the first analog signal and a second digital signal obtained by digitalizing the second analog signal can be output from the substrate.

An oscillator includes a vibrator element, a container in which the vibrator element is housed, at least one of a heating element and a cooling body configured to control the temperature on the inside of the container, an oscillation circuit electrically connected to the vibrator element, a D/A conversion circuit configured to control a frequency output by the oscillation circuit, and a reference-voltage generation circuit configured to supply a voltage to the D/A conversion circuit. The reference-voltage generation circuit is mounted on the inside of the container or on a substrate on which the container is mounted.

An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element having a frequency-temperature characteristic, and a frequency adjustment circuit having a capacitance circuit connected to the oscillating circuit and adapted to adjust an oscillation frequency of the oscillating circuit, and a logic circuit, to which a signal having been output from the oscillating circuit is input, and which adjusts a frequency of the signal, and the frequency adjustment circuit compensates the frequency-temperature characteristic using at least the capacitance circuit in a predetermined temperature range, and compensates the frequency-temperature characteristic using the logic circuit alone outside the predetermined temperature range.

A circuit device includes an oscillation circuit that generates an oscillation signal by using an resonator, a processing circuit that controls the oscillation circuit, and a storage circuit that stores temperature compensation data of an oscillation frequency of the oscillation signal. The processing circuit generates specific PUF information of the circuit device on the basis of the temperature compensation data.

An oscillation circuit includes an amplification circuit that causes a resonator to oscillate, and a variable capacitance circuit whose capacitance value is controlled on the basis of a control voltage. The variable capacitance circuit includes a first variable capacitive element in which an inflection point voltage in a change characteristic of a capacitance value for the control voltage is a first voltage, and a second variable capacitive element in which an inflection point voltage in a change characteristic of a capacitance value for the control voltage is a second voltage which is different from the first voltage. A capacitance value of the first variable capacitive element when the control voltage is the first voltage is different from a capacitance value of the second variable capacitive element when the control voltage is the second voltage.