Oscillator, electronic apparatus, vehicle, and manufacturing method of oscillator
A manufacturing method and oscillator technology, which are applied in power oscillators, automatic power control, circuits, etc., can solve the problems of abnormal oscillator frequency, difficulty in ensuring inspection terminal space, and difficulty in detection of tester inspection terminals, and achieve reliable performance. High performance, miniaturization and electrostatic damage risk effects
Active Publication Date: 2018-09-07
SEIKO EPSON CORP
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Problems solved by technology
[0004] However, even if the series resonant resistance value of the crystal resonator is normal, the frequency of the oscillator may be abnormal due to foreign matter adhering to the crystal resonator. As an inspection of the crystal resonator, the inspection described in Patent Document 1 alone is not sufficient.
In order to determine whether foreign matter is attached to the crystal resonator, an inspection of the drive level dependence (DLD: Drive Level Dependency) of the oscillation frequency of the crystal resonator (hereinafter referred to as "DLD inspection") is performed, but in order to perform a DLD inspection, it is necessary Since inspection terminals electrically connected to both ends of the vibrator are provided in the oscillator, there are problems in that it is difficult to secure a space for arranging the inspection terminals in a small-package oscillator, and it is also difficult for the tester to detect the inspection terminals.
In addition, since the terminal to be probed is exposed to the outside of the oscillator, the risk of destroying the oscillation circuit due to static electricity input through the terminal also increases.
Method used
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[0069] Hereinafter, preferred embodiments of the present invention will be described in detail using the drawings. In addition, the embodiment described below does not unreasonably limit the content of the present invention described in the claims. In addition, all the configurations described below are not limited to essential configuration requirements of the present invention.
[0070] 1. Oscillator
[0071] 1-1. First Embodiment
[0072] [Structure of oscillator]
[0073] Figure 1 ~ Figure 3 It is a figure showing an example of the structure of the oscillator 1 of this embodiment. figure 1 is a perspective view of oscillator 1, figure 2 Yes figure 1 A-A' sectional view of . and, image 3 is the bottom view of Oscillator 1.
[0074] like Figure 1 ~ Figure 3 As shown, the oscillator 1 is configured to include at least an oscillation IC (Integrated Circuit) 2, a vibrator 3, and external terminals (external electrodes) 6, and also includes a package 4, a lid (lid)...
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The invention provides an oscillator, an electronic apparatus, a vehicle, and a manufacturing method of the oscillator; miniaturization can be realized, static damage risks can be lowered, and drive level dependency of the oscillator can be checked. The oscillator includes: an external terminal, a resonator, and an oscillation circuit that oscillates the resonator, in which the oscillation circuitincludes an amplification circuit and a current source which supplies a current to the amplification circuit, in which the current is set according to a first control signal which is input from the external terminal and a drive level of the resonator is changed according to the setting of the current.
Description
technical field [0001] The present invention relates to an oscillator, an electronic device, a mobile body, and a method for manufacturing the oscillator. Background technique [0002] An oscillator that oscillates a resonator such as a crystal resonator to output a signal of a desired frequency is widely used in various electronic devices and systems. In such oscillators, inspection for sorting good and defective products is performed before shipment. For example, Patent Document 1 describes that a crystal oscillator has a unit that changes the negative resistance value of an IC circuit based on a control signal from the outside, and that the crystal oscillator is used to change the negative resistance value and monitor Oscillation output, according to the negative resistance value when the oscillation is stopped and / or when the oscillation is started, the series resonance resistance value of the crystal oscillator is obtained, and the negative resistance value set in the ...
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IPC IPC(8): H03L5/00H10N30/88
CPCH03L5/00H03H9/0547H03H9/1021H03B5/362H03B5/366H03B2200/0038H03B2201/0208H03B2201/0266H03B5/364H03H9/25H10N30/88
Inventor 伊藤久浩
Owner SEIKO EPSON CORP