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: A vibrator device includes a first excitation electrode, a first pad electrode, and a first drawn wiring line that are disposed at a first surface of a vibrator element, a second excitation electrode, a second pad electrode, and a second drawn wiring line that are disposed at a second surface of the vibrator element, and a spiral first electrode pattern disposed at the first surface of the vibrator element. The first excitation electrode and the second excitation electrode are disposed so as to face each other with the vibrator element therebetween. A first central end section of the first electrode pattern is electrically coupled to the second drawn wiring line via a through electrode provided in the vibrator element. A first outer circumferential end section of the first electrode pattern is electrically coupled to the first drawn wiring line. The first drawn wiring line is electrically coupled to at least one of the first excitation electrode and the first pad electrode.

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 LVDS driver circuit includes: a current source; a differential unit configured to receive a first input signal and a second input signal and output a first output signal and a second output signal; and a feedback control circuit configured to be coupled to a first output node and a second output node and to perform, by outputting a control voltage to a gate of a transistor, feedback control that sets a common voltage of a differential output signal. In the differential unit, the first output node and the second output node are in a high impedance state in the high impedance mode, the differential unit is configured to output the first output signal and the second output signal in the signal output mode, and the control voltage in the high impedance mode is larger than the control voltage in the signal output mode.

Abstract: An LVDS driver circuit includes: a current source; a differential unit configured to receive a first input signal and a second input signal and output a first output signal and a second output signal; and a feedback control circuit configured to be coupled to a first output node and a second output node and to perform, by outputting a control voltage to a gate of a transistor, feedback control that sets a common voltage of a differential output signal. In the differential unit, the first output node and the second output node are in a high impedance state in the high impedance mode, the differential unit is configured to output the first output signal and the second output signal in the signal output mode, and the control voltage in the high impedance mode is larger than the control voltage in the signal output mode.

Abstract: An integrated circuit includes first and second coils, a first pad connected to the first coil and to a resonator, a second pad connected to the second coil and to the resonator, and first and second output terminals. The first pad is arranged to provide signals between the resonator and the first coil. The second pad is arranged to provide signals between the resonator and the second coil. A distance between the first pad and the first coil is less than a distance between the first coil and the first output terminal and a distance between the first coil and the second output terminal. A distance between the second pad and the second coil is less than a distance between the second coil and the first output terminal and a distance between the second coil and the second output terminal.

Abstract: An oscillation module includes: an oscillation circuit; a multiplication circuit which is provided at a stage subsequent to the oscillation circuit and is operated by differential motion; and an output circuit which is provided at a stage subsequent to the multiplication circuit.

Abstract: An integrated circuit includes first and second coils, a first pad connected to the first coil and to a resonator, a second pad connected to the second coil and to the resonator, and first and second output terminals. The first pad is arranged to provide signals between the resonator and the first coil. The second pad is arranged to provide signals between the resonator and the second coil. A distance between the first pad and the first coil is less than a distance between the first coil and the first output terminal and a distance between the first coil and the second output terminal. A distance between the second pad and the second coil is less than a distance between the second coil and the first output terminal and a distance between the second coil and the second output terminal.

Abstract: An oscillation module includes an SAW filter, and a high-pass filter formed in an integrated circuit, the high-pass filter has a coil part, a capacitance part, and a first interconnection adapted to connect the coil part and the capacitance part to each other, and the capacitance part includes a capacitance array.

Abstract: An oscillation module includes an oscillation circuit which includes a first coil and a second coil and a filter circuit which is provided at a stage subsequent to the oscillation circuit and includes a third coil. The first coil, the second coil, and the third coil are a part of an integrated circuit. The third coil is arranged so as to intersect a virtual straight line equidistant from the center of the first coil and the center of the second coil, in a plan view of the integrated circuit.

Abstract: An oscillation module includes a loop interconnection, a high-frequency output interconnection, a differential amplifier, and an output terminal, the differential amplifier is connected to the output terminal with the high-frequency output interconnection, the high-frequency output interconnection crosses the loop interconnection in a grade-separated manner, and the loop interconnection is different in thickness between a crossing part and a non-crossing part with the high-frequency interconnection.

Abstract: An oscillation module includes an SAW filter, and a high-pass filter formed in an integrated circuit, the high-pass filter has a coil part, a capacitance part, and a first interconnection adapted to connect the coil part and the capacitance part to each other, and the capacitance part includes a capacitance array.

Abstract: An oscillation module includes a loop interconnection, a high-frequency output interconnection, a differential amplifier, and an output terminal, the differential amplifier is connected to the output terminal with the high-frequency output interconnection, the high-frequency output interconnection crosses the loop interconnection in a grade-separated manner, and the loop interconnection is different in thickness between a crossing part and a non-crossing part with the high-frequency interconnection.

Abstract: An oscillation module includes: an oscillation circuit; a multiplication circuit which is provided at a stage subsequent to the oscillation circuit and is operated by differential motion; and an output circuit which is provided at a stage subsequent to the multiplication circuit.

Abstract: An oscillation module includes: an oscillation circuit which includes a first coil and a second coil; and a filter circuit which is provided at a stage subsequent to the oscillation circuit and includes a third coil, in which the first coil, the second coil, and third coil are a part of an integrated circuit, and the third coil is arranged so as to intersect a virtual straight line equidistant from the center of the first coil and the center of the second coil, in a plan view of the integrated circuit.

Abstract: An oscillation module includes a SAW filter and a package adapted to house the SAW filter. One end of the SAW filter is firmly fixed to the package.

Abstract: A frequency multiplication circuit includes a delay circuit that has a clock signal having a period input thereto and delays the signal by a time, an exclusive OR circuit that has the clock signal and a signal from the delay circuit input thereto and outputs a signal serving as an exclusive OR between the clock signal and the signal from the delay circuit, and a signal correction circuit that has a signal from the exclusive OR circuit input thereto and corrects the input signal to output the resultant. The length of the time is a length other than n×T/4 (n is an integer). The signal correction circuit attenuates a signal having a second frequency based on T/2, rather than a signal having a first frequency based on the time ?.

Abstract: A signal output circuit includes a signal correction circuit, having a clock signal input thereto, which corrects the clock signal to output the corrected signal, and a waveform shaping circuit that shapes a signal from the signal correction circuit. In the clock signal, pulses having a pulse width ? capable of being represented by a length of a time are periodically arranged with a period T, and the pulse width ? and the period T satisfy a relation of ?/T?0.5. The signal correction circuit attenuates a signal having a second frequency based on a time width of at least one of the pulse width ? and a pulse width T??, rather than a signal having a first frequency based on the period T.

Abstract: A semiconductor circuit device includes: a semiconductor circuit provided on a main surface of a semiconductor substrate; and a thin film circuit element including a conductive thin film and disposed on the main surface of the semiconductor substrate. The semiconductor circuit is provided between the thin film circuit element and a peripheral portion of the semiconductor substrate in a plan view.

Abstract: A frequency multiplication circuit includes a delay circuit that has a clock signal having a period input thereto and delays the signal by a time, an exclusive OR circuit that has the clock signal and a signal from the delay circuit input thereto and outputs a signal serving as an exclusive OR between the clock signal and the signal from the delay circuit, and a signal correction circuit that has a signal from the exclusive OR circuit input thereto and corrects the input signal to output the resultant. The length of the time is a length other than n×T/4 (n is an integer). The signal correction circuit attenuates a signal having a second frequency based on T/2, rather than a signal having a first frequency based on the time ?.