Abstract: A dielectric elastomer drive system A1 includes: a dielectric elastomer drive unit 1 provided with a dielectric elastomer layer 11 and a pair of electrode layers 12 flanking the dielectric elastomer layer 11; a power supply unit 5 configured to apply voltage to the dielectric elastomer drive unit 1; and a charge removal unit 2 configured to remove the charge stored in the dielectric elastomer drive unit 1. The configuration contributes to improving responsiveness.

Abstract: A circuit device includes an oscillation circuit configured to generate an oscillation signal and a temperature compensation circuit configured to perform temperature compensation for an oscillation frequency of the oscillation signal. The temperature compensation circuit includes a first reference current generation circuit configured to generate a first reference current, a second reference current generation circuit configured to generate a second reference current, a first compensation circuit configured to perform temperature compensation for the oscillation frequency in a first temperature range based on the first reference current, and a second compensation circuit configured to perform temperature compensation for the oscillation frequency in a second temperature range, which is higher than the first temperature range in temperature, based on the second reference current.

Abstract: Provided is a temperature sensor including a bipolar transistor, a resistor, and a variable resistance circuit. The resistor is provided between a first node coupled to a base node of the bipolar transistor and a collector node of the bipolar transistor. The variable resistance circuit is provided between an emitter node of the bipolar transistor and a ground node.

Abstract: An oscillator circuit includes an oscillating circuit coupled to a vibrator, and a control circuit that controls the oscillating circuit. The oscillator circuit has a normal operation mode in which the oscillating circuit oscillates in a state where a negative resistance value is a first value, and a start mode in which the oscillator circuit shifts from a state where oscillation is stopped to the normal operation mode. In the start mode, the control circuit controls the negative resistance value to increase from a second value which is smaller than the first value.

Abstract: An oscillator circuit includes an oscillating circuit coupled to a vibrator, and a control circuit that controls the oscillating circuit. The oscillator circuit has a normal operation mode in which the oscillating circuit oscillates in a state where a negative resistance value is a first value, and a start mode in which the oscillator circuit shifts from a state where oscillation is stopped to the normal operation mode. In the start mode, the control circuit controls the negative resistance value to increase from a second value which is smaller than the first value.

Abstract: The circuit device includes a current generation circuit and a current-voltage conversion circuit. The current generation circuit generates a temperature compensation current based on a temperature detection voltage from the temperature sensor and temperature compensation data. The current-voltage conversion circuit converts the temperature compensation current into the temperature compensation voltage. The current generation circuit performs a fine adjustment of the temperature compensation current based on lower bits of the temperature compensation data, and performs a coarse adjustment of the temperature compensation current based on higher bits of the temperature compensation data.

Abstract: An integrated circuit device includes a first pad and a second pad electrically coupled to one end and the other end of a resonator, an oscillation circuit that is electrically coupled to the first pad and the second pad and generates an oscillation signal by causing the resonator to oscillate, and an output circuit that outputs a clock signal based on the oscillation signal. The oscillation circuit is disposed along a first side of the integrated circuit device among the first side, a second side that intersects the first side, a third side that is an opposite side of the first side, and a fourth side that is an opposite side of the second side. The first pad and the second pad are disposed in the oscillation circuit along the first side in a plan view, and the output circuit is disposed along the second side.

Abstract: An integrated circuit device includes an oscillation circuit that generates an oscillation signal by causing a resonator to oscillate, a temperature compensation circuit that performs temperature compensation of an oscillation frequency of the oscillation circuit, an output circuit that outputs a clock signal based on the oscillation signal, a first regulator that generates a first regulated power supply voltage based on a power supply voltage and supplies the first regulated power supply voltage to the temperature compensation circuit, and a second regulator that generates a second regulated power supply voltage based on the power supply voltage and supplies the second regulated power supply voltage to the output circuit.

Abstract: The circuit device includes a current generation circuit and a current-voltage conversion circuit. The current generation circuit generates a temperature compensation current based on a temperature detection voltage from the temperature sensor and temperature compensation data. The current-voltage conversion circuit converts the temperature compensation current into the temperature compensation voltage. The current generation circuit performs a fine adjustment of the temperature compensation current based on lower bits of the temperature compensation data, and performs a coarse adjustment of the temperature compensation current based on higher bits of the temperature compensation data.

Abstract: An integrated circuit device includes a first pad and a second pad electrically coupled to one end and the other end of a resonator, an oscillation circuit that is electrically coupled to the first pad and the second pad and generates an oscillation signal by causing the resonator to oscillate, and an output circuit that outputs a clock signal based on the oscillation signal. The oscillation circuit is disposed along a first side of the integrated circuit device among the first side, a second side that intersects the first side, a third side that is an opposite side of the first side, and a fourth side that is an opposite side of the second side. The first pad and the second pad are disposed in the oscillation circuit along the first side in a plan view, and the output circuit is disposed along the second side.

Abstract: An integrated circuit device includes an oscillation circuit that generates an oscillation signal by causing a resonator to oscillate, a temperature compensation circuit that performs temperature compensation of an oscillation frequency of the oscillation circuit, an output circuit that outputs a clock signal based on the oscillation signal, a first regulator that generates a first regulated power supply voltage based on a power supply voltage and supplies the first regulated power supply voltage to the temperature compensation circuit, and a second regulator that generates a second regulated power supply voltage based on the power supply voltage and supplies the second regulated power supply voltage to the output circuit.

Abstract: Provided is a temperature sensor including a bipolar transistor, a resistor, and a variable resistance circuit. The resistor is provided between a first node coupled to a base node of the bipolar transistor and a collector node of the bipolar transistor. The variable resistance circuit is provided between an emitter node of the bipolar transistor and a ground node.

Abstract: A vibrator device has a base that has a first terminal, a circuit element that is disposed on the base and has a second terminal, a vibrator that includes a vibrator element and a vibrator element package, and is positioned between the first terminal and the second terminal in plan view of the base, a wiring unit that is disposed on the vibrator, a first wire that electrically connects the first terminal and the wiring unit together, and a second wire that electrically connects the wiring unit and the second terminal together.

Abstract: An output buffer circuit includes an output node, a P-type transistor, an N-type transistor, and a first variable resistor circuit provided in a signal path between a drain of one of the P-type transistor and the N-type transistor and the output node.

Abstract: An output buffer circuit includes an output node, a P-type transistor, an N-type transistor, and a first variable resistor circuit provided in a signal path between a drain of one of the P-type transistor and the N-type transistor and the output node.

Abstract: A vibrator device has a base that has a first terminal, a circuit element that is disposed on the base and has a second terminal, a vibrator that includes a vibrator element and a vibrator element package, and is positioned between the first terminal and the second terminal in plan view of the base, a wiring unit that is disposed on the vibrator, a first wire that electrically connects the first terminal and the wiring unit together, and a second wire that electrically connects the wiring unit and the second terminal together.

Abstract: In order to configure an oscillation circuit, an oscillator, a fractional N-PLL circuit, and the like that can output a plurality of frequencies, while decreasing an influence of an integer value boundary spurious at one reference frequency, the oscillation circuit includes a circuit for oscillation that oscillates a resonator, a fractional N-PLL circuit to which a signal from the circuit for oscillation is input, and a non-volatile memory that stores a plurality of division ratios, which can be selected from outside, of the fractional N-PLL circuit. A fractional portion of at least two of the plurality of division ratios is equal to or higher than 0.05 and is equal to or lower than 0.95.

Abstract: An oscillation circuit includes a voltage controlled oscillation circuit that includes a variable capacitance circuit provided with a variable capacitance element whose capacitance value is controlled on the basis of a control voltage and oscillates a vibrator so as to generate an oscillation signal, and a fractional N-PLL circuit that receives the oscillation signal generated by the voltage controlled oscillation circuit and includes a voltage controlled oscillator which controls an oscillation frequency on the basis of control input data (an integral division ratio and a fractional division ratio).

Abstract: In order to configure an oscillation circuit, an oscillator, a fractional N-PLL circuit, and the like that can output a plurality of frequencies, while decreasing an influence of an integer value boundary spurious at one reference frequency, the oscillation circuit includes a circuit for oscillation that oscillates a resonator, a fractional N-PLL circuit to which a signal from the circuit for oscillation is input, and a non-volatile memory that stores a plurality of division ratios, which can be selected from outside, of the fractional N-PLL circuit. A fractional portion of at least two of the plurality of division ratios is equal to or higher than 0.05 and is equal to or lower than 0.95.

Abstract: An oscillation circuit includes a voltage controlled oscillation circuit that includes a variable capacitance circuit provided with a variable capacitance element whose capacitance value is controlled on the basis of a control voltage and oscillates a vibrator so as to generate an oscillation signal, and a fractional N-PLL circuit that receives the oscillation signal generated by the voltage controlled oscillation circuit and includes a voltage controlled oscillator which controls an oscillation frequency on the basis of control input data (an integral division ratio and a fractional division ratio).