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公开(公告)号：US20240356490A1
公开(公告)日：2024-10-24
申请号：US18642874
申请日：2024-04-23
发明人： Ryuto WADA , Masaaki OKUBO
CPC分类号： H03B5/32 , H01L24/45 , H01L24/48 , H03B5/04 , H01L2224/45144 , H01L2924/351 , H03B2200/0018
摘要： An oscillator includes a resonator element provided with an excitation electrode, an oscillation circuit for oscillating the resonator element to generate an oscillation signal, a temperature sensor for generating a temperature signal for temperature compensation of the oscillation signal, a temperature control element for controlling temperature of the resonator element, and a container that houses the resonator element, the oscillation circuit, the temperature sensor, and the temperature control element, in which the temperature sensor and the temperature control element overlap the excitation electrode in plan view.
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公开(公告)号：US20240333216A1
公开(公告)日：2024-10-03
申请号：US18617758
申请日：2024-03-27
发明人： Teppei HIGUCHI , Sho MATSUZAKI , Yuichi TORIUMI , Toshiya USUDA
摘要： A circuit device includes: a first terminal and a second terminal coupled to a resonator; a third terminal; a fourth terminal; a first switch provided on a signal path between the first terminal and the third terminal; a second switch provided on a signal path between the second terminal and the fourth terminal; and a register configured to output a signal for controlling the first switch and the second switch to be turned on or off. In a first mode, the first switch and the second switch are turned off, a control signal is input to the third terminal, and a clock signal is output from the fourth terminal. In a second mode, the first switch and the second switch are turned on.
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公开(公告)号：US12101060B2
公开(公告)日：2024-09-24
申请号：US18175509
申请日：2023-02-27
发明人： Bo Xin Yang
CPC分类号： H03B5/06 , H03B5/1228 , H03B5/24 , H03B5/32 , H03B2200/0038
摘要： An oscillator acceleration circuit, configured to accelerate the start-up of an oscillator, wherein the oscillator has an input terminal and an output terminal. The oscillator acceleration circuit includes an inverting amplifier, a feedback resistor and an acceleration circuit; the inverting amplifier has an input terminal and an output terminal correspondingly coupled to the input terminal and the output terminal of the oscillator. The feedback resistor is coupled between the input terminal and the output terminal of the oscillator, and the acceleration circuit is coupled between the input terminal and the output terminal of the oscillator. The acceleration circuit is configured to provide a transfer function, wherein the transfer function is the same as the transfer function provided by a resistor and a capacitor connected in parallel; wherein the resistance of the resistor is less than zero.
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4.发明授权公开(公告)号：US12095471B2
公开(公告)日：2024-09-17
申请号：US17936505
申请日：2022-09-29
发明人： Bichoy Bahr , Yogesh Ramadass
CPC分类号： H03L7/0995 , H03B5/326 , H03H9/02244 , H03K3/0231 , H03L7/085 , H03M1/46
摘要： A clock circuit includes a voltage-controlled oscillator (VCO) having a control input and a first clock output. The clock circuit includes a frequency-locked loop (FLL) having an FLL input and a control output, the control output coupled to the control input. A microelectromechanical system (MEMS) resonator-based oscillator has a second clock output. A multiplexer has a first multiplexer input, a second multiplexer input, a selection input, and a multiplexer output. The first multiplexer input is coupled to the first clock output. The second multiplexer input is coupled to the second clock output. The multiplexer output is coupled to the FLL input.
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公开(公告)号：US12092094B2
公开(公告)日：2024-09-17
申请号：US16569923
申请日：2019-09-13
发明人： Kenjiro Okaguchi
IPC分类号： F04B45/047 , A61B5/0225 , F04B49/02 , H02N2/06 , H03B5/32
CPC分类号： F04B45/047 , A61B5/0225 , F04B49/02 , H02N2/06 , H03B5/32
摘要： A fluid control device includes a piezoelectric pump that includes a piezoelectric element and whose discharge pressure output varies depending on a drive frequency of the piezoelectric element, a self oscillation circuit that self-oscillates in accordance with a drive supply voltage and that drives the piezoelectric element at an oscillation frequency, and a control circuit that generates a control voltage. The oscillation frequency of the self oscillation circuit varies depending on the control voltage.
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公开(公告)号：US12088277B2
公开(公告)日：2024-09-10
申请号：US17322948
申请日：2021-05-18
摘要： A vibration device includes a quartz substrate including a first vibration section, a second vibration section, and a third vibration section, a pair of first excitation electrodes formed at two principal surfaces of the quartz substrate, a pair of second excitation electrodes so formed as to sandwich the second vibration section in the thickness direction of the quartz substrate, and a pair of third excitation electrodes so formed as to sandwich the third vibration section in the thickness direction of the quartz substrate. At least one of the pair of second excitation electrodes is formed at a first inclining surface that inclines with respect to the two principal surfaces. At least one of the pair of third excitation electrodes is formed at a second inclining surface that inclines with respect to the two principal surfaces. The second inclining surface inclines with respect to the first inclining surface.
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公开(公告)号：US12088253B2
公开(公告)日：2024-09-10
申请号：US18181094
申请日：2023-03-09
发明人： Koichi Mizugaki
CPC分类号： H03B5/32 , H03B1/02 , H03B5/04 , H03L1/028 , H03L1/04 , H05K1/111 , H05K1/181 , H10N30/88 , H05K2201/10083
摘要： A circuit board includes: a semiconductor substrate including a first surface and a second surface located at an opposite side from the first surface; a circuit provided at a first surface side; a first external electrode provided at a second surface side; a heater provided at the second surface side; and a plurality of through electrodes penetrating the first surface and the second surface and electrically coupling the circuit and the first external electrode or the heater. The heater and the first external electrode do not overlap each other in a plan view.
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公开(公告)号：US20240258971A1
公开(公告)日：2024-08-01
申请号：US18427294
申请日：2024-01-30
发明人： Ryuta Nishizawa , Junichi Takeuchi
CPC分类号： H03B5/04 , H03B5/1206 , H03B5/32 , H03H9/0547 , H03H9/19
摘要： A vibrator device includes: a base having an integrated circuit disposed at a second surface; a vibration element; and a lid having an end surface of a side wall bonded to a first surface of the base at a bonding portion. The integrated circuit includes a first circuit and a second circuit, the first circuit includes a plurality of first circuit elements disposed in a first region ARA, and the second circuit includes a second circuit element disposed in a second region ARB. At this time, the following relations are established.
{
1
-
L
1
A
/
WX
}
≤
0.95
{
1
-
L
2
A
/
WX
}
≤
0.95
{
1
-
L
3
A
/
WY
}
≤
0.95
{
1
-
L
4
A
/
WY
}
≤
0.95
{
1
-
L
1
B
/
WX
}
≤
0.8
{
1
-
L
2
B
/
WX
}
≤
0.8
{
1
-
L
3
B
/
WY
}
≤
0.8
{
1
-
L
4
B
/
WY
}
≤
0.8-
公开(公告)号：US12040748B2
公开(公告)日：2024-07-16
申请号：US17471563
申请日：2021-09-10
发明人： Jun Watanabe
CPC分类号： H03B5/36 , G01D5/2405 , H03B5/06 , H03B5/32 , H03K19/20 , H03B2200/0022
摘要： The oscillation circuit includes a drive circuit and an amplitude limiting circuit. A vibrator-output signal is input to the drive circuit from one end of the vibrator, and the drive circuit outputs a drive signal obtained by inverting the vibrator-output signal. The amplitude limiting circuit is disposed between an output node of the drive circuit and the other end of the vibrator, and outputs an amplitude-limited drive signal obtained by reducing an amplitude of the drive signal to the other end of the vibrator.
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公开(公告)号：US20240195359A1
公开(公告)日：2024-06-13
申请号：US18586004
申请日：2024-02-23
发明人： Yuuki OOI
CPC分类号： H03B5/32 , H03H9/19 , H03B2200/0018
摘要： A piezoelectric oscillator includes: a piezoelectric vibrating element having a piezoelectric strip, a first excitation electrode, and a second excitation electrode; a first crystal substrate bonded to the piezoelectric strip; and a second crystal substrate bonded to the piezoelectric strip. The first crystal substrate has a principal surface defined by a first basic axis and a second basic axis that intersects the first basic axis, and when an axis obtained by inclining, among mutually intersecting first, second, and third crystallographic axes of a material of the first crystal substrate, the third axis around the first axis by a first predetermined angle is regarded as a first inclined axis, the first axis corresponds to the first basic axis and the first inclined axis corresponds to the second basic axis, the first predetermined angle is any angle included in an angle range of −90 to −60 degrees and 80 to 90 degrees.
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