Abstract: A vibrator device has a base, a semiconductor element having an oscillation circuit, and a vibrator having an excitation electrode sequentially stacked and includes a first wire electrically coupling between the excitation electrode and the semiconductor element, a second wire electrically coupling between a second external terminal as an external output terminal placed on the base and the semiconductor element, and a shield wire placed between at least a part of the first wire and at least a part of the second wire.

Abstract: A circuit device includes an A/D conversion circuit that performs A/D conversion on a temperature detection voltage from a temperature sensor so as to output temperature detection data, and a digital signal processing circuit that performs a temperature compensation process on the basis of the temperature detection data, in which the A/D conversion circuit operates in a first mode, and switches to a second mode in a case where a predetermined condition is established.

Abstract: An oscillator includes a package having a first side, a second side, a third side, and a fourth side, a resonator and an oscillation circuit disposed in the package, an output terminal arranged along the first side of the package, and outputting a clock signal generated by the oscillation circuit, and a control terminal arranged along the second side of the package, and supplied with a digital control signal adapted to update an operation state of the oscillation circuit.

Abstract: A D/A converter includes a decoder, a voltage selection circuit, and a voltage selection circuit. The voltage selection circuit includes a plurality of stages of selector blocks in which output of a selector of the selector block at the previous stage is input to a selector of the selector block at the subsequent stage. A plurality of voltages are input to the selector block at the first stage, and the selector block at the final stage outputs a D/A-converted voltage. Each of the plurality of stages of selector blocks includes a plurality of transistors and, of the plurality of transistors forming the selector block, a second transistor on a far side from a power source node is set to a lower threshold voltage than that of a first transistor on a near side from the power source node.

Abstract: A circuit device includes an A/D conversion circuit that performs A/D conversion on a temperature detection voltage from a temperature sensor so as to output temperature detection data, and a digital signal processing circuit that performs a temperature compensation process on the basis of the temperature detection data, in which the A/D conversion circuit operates in a first mode, and switches to a second mode in a case where a predetermined condition is established.

Abstract: A D/A converter includes a decoder, a voltage selection circuit, and a voltage selection circuit. The voltage selection circuit includes a plurality of stages of selector blocks in which output of a selector of the selector block at the previous stage is input to a selector of the selector block at the subsequent stage. A plurality of voltages are input to the selector block at the first stage, and the selector block at the final stage outputs a D/A-converted voltage. Each of the plurality of stages of selector blocks includes a plurality of transistors and, of the plurality of transistors forming the selector block, a second transistor on a far side from a power source node is set to a lower threshold voltage than that of a first transistor on a near side from the power source node.

Abstract: An oscillator includes a package having a first side, a second side, a third side, and a fourth side, a resonator and an oscillation circuit disposed in the package, an output terminal arranged along the first side of the package, and outputting a clock signal generated by the oscillation circuit, and a control terminal arranged along the second side of the package, and supplied with a digital control signal adapted to update an operation state of the oscillation circuit.

Abstract: A D/A conversion circuit includes a plurality of resistors that are connected to each other in series, and a plurality of MOS transistors that are connected to terminals of the plurality of resistors, respectively. The plurality of resistors and the plurality of MOS transistors are formed on a semiconductor substrate. Each of the plurality of resistors is constituted by a resistive element and a plurality of contacts provided in the resistive element. The plurality of MOS transistors are disposed so that a plurality of virtual straight lines that pass through each of the plurality of contacts and are perpendicular to a longitudinal direction of the resistive element pass between gate electrodes of two adjacent MOS transistors, when seen in a plan view of the semiconductor substrate.

Abstract: A D/A conversion circuit includes a plurality of resistors connected to each other in series, a plurality of MOS transistors connected to each other so as to correspond to a plurality of contacts, and a plurality of dummy electrodes respectively disposed on sides opposite to the plurality of MOS transistors with a resistive element interposed therebetween when seen in a plan view of a semiconductor substrate. Each of the dummy electrodes is set to be in a second potential state when a gate electrode of the MOS transistor disposed on a side opposite thereto with the resistive element interposed therebetween is in a first potential state, and is set to be in a first potential state when the gate electrode of the MOS transistor is in a second potential state.

Abstract: A D/A conversion circuit includes a plurality of resistors connected to each other in series, a plurality of MOS transistors connected to each other so as to correspond to a plurality of contacts, and a plurality of dummy electrodes respectively disposed on sides opposite to the plurality of MOS transistors with a resistive element interposed therebetween when seen in a plan view of a semiconductor substrate. Each of the dummy electrodes is set to be in a second potential state when a gate electrode of the MOS transistor disposed on a side opposite thereto with the resistive element interposed therebetween is in a first potential state, and is set to be in a first potential state when the gate electrode of the MOS transistor is in a second potential state.

Abstract: A D/A conversion circuit includes a plurality of resistors that are connected to each other in series, and a plurality of MOS transistors that are connected to terminals of the plurality of resistors, respectively. The plurality of resistors and the plurality of MOS transistors are formed on a semiconductor substrate. Each of the plurality of resistors is constituted by a resistive element and a plurality of contacts provided in the resistive element. The plurality of MOS transistors are disposed so that a plurality of virtual straight lines that pass through each of the plurality of contacts and are perpendicular to a longitudinal direction of the resistive element pass between gate electrodes of two adjacent MOS transistors, when seen in a plan view of the semiconductor substrate.