Oscillator, electronic apparatus, and vehicle
An oscillator includes: a base substrate having a first electrode; a temperature control element mounted on the base substrate and having a first pad electrically coupled to the first electrode; a resonator element having a first major surface and a second major surface in front-back relation with the first major surface, and mounted on the temperature control element in such a way that the second major surface faces the temperature control element; and at least one first bonding wire coupling the first major surface and the first pad together.
1. An oscillator comprising:
a base substrate having a first electrode;
a temperature control element mounted on the base substrate and having a first pad electrically coupled to the first electrode;
a resonator element having a first major surface and a second major surface in front-back relation with the first major surface, and mounted on the temperature control element in such a way that the second major surface faces the temperature control element;
at least one first bonding wire coupling the first major surface and the first pad together; and
at least one second bonding wire electrically coupling the first pad and the first electrode together such that the first pad acts a single relay electrode pad that connects the first bonding wire and the second bonding wire.
2. The oscillator according to claim 1 , wherein
a number of the second bonding wires is fewer than a number of the first bonding wires.
3. The oscillator according to claim 1 , wherein
the temperature control element has a second pad, and
the second major surface is bonded to the second pad via an electrically conductive bonding member.
4. The oscillator according to claim 3 , wherein
the temperature control element has a third pad to which a constant voltage is applied, and
the third pad is arranged between the first pad and the second pad in a plan view.
5. The oscillator according to claim 4 , wherein
the first pad has a larger area than the third pad in a plan view.
6. The oscillator according to claim 3 , wherein
the temperature control element has:
a temperature-sensitive element;
a third pad to which a high potential-side power supply voltage is applied;
a fourth pad to which a low potential-side power supply voltage is applied;
a fifth pad outputting a signal from the temperature-sensitive element; and
a sixth pad to which a control voltage is applied,
one of the third pad, the fourth pad, and the fifth pad is arranged between the first pad and the sixth pad in a plan view, and
one of the third pad, the fourth pad, and the fifth pad is arranged between the second pad and the sixth pad in a plan view.
7. The oscillator according to claim 1 , further comprising:
a second temperature control element mounted on the base substrate, wherein
the resonator element overlaps the second temperature control element at a position not overlapping the temperature control element in a plan view.
8. An electronic apparatus comprising:
the oscillator according to claim 1 ; and
a signal processing circuit performing signal processing based on an output signal from the oscillator.
9. A vehicle comprising:
the oscillator according to claim 1 ; and
a signal processing circuit performing signal processing based on an output signal from the oscillator.
10. An oscillator comprising:
a base substrate having a first electrode;
a temperature control element mounted on the base substrate and having a first pad electrically coupled to the first electrode;
a resonator including a resonator element and a container that accommodates the resonator element, the resonator having a first terminal at a first surface, the resonator being mounted on the temperature control element at the side of a second surface in a front-back relation with the first surface, wherein the container defines an enclosed space that separates the resonator element from the base substrate and the temperature control element; and
at least one bonding wire coupling the first terminal and the first pad together.