公开(公告)号：US20230246593A1

公开(公告)日：2023-08-03

申请号：US18161401

申请日：2023-01-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Naoki II ,  Yosuke ITASAKA

IPC: H03B5/36 ,  H03L7/24 ,  H03L7/099

CPC classification number: H03B5/36 ,  H03L7/24 ,  H03L7/099

Abstract: A method of manufacturing an oscillator including housing a first resonator and a first integrated circuit device configured to oscillate the first resonator in a first container to manufacture the first oscillator, and housing a second resonator and a second integrated circuit device configured to oscillate the second resonator in a second container to manufacture the second oscillator, wherein the first integrated circuit device includes a first oscillation circuit configured to oscillate the first resonator to output a first oscillation signal, and no PLL circuit, the second integrated circuit device includes a second oscillation circuit configured to oscillate the second resonator to output a second oscillation signal, and a PLL circuit to which the second oscillation signal is input, and which is configured to output a third oscillation signal, and the first container and the second container are containers same in type.

公开(公告)号：US11012031B2

公开(公告)日：2021-05-18

申请号：US16773694

申请日：2020-01-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Masayuki Ishikawa ,  Naoki II

IPC: H03B5/04 ,  H03B5/36 ,  H03L1/02 ,  H03L5/00 ,  H03B5/32

Abstract: An oscillator includes a resonator and an integrated circuit, the integrated circuit includes an oscillation circuit that oscillates the resonator, a temperature sensor, a temperature compensation circuit that compensates for temperature characteristics of the resonator based on an output signal of the temperature sensor, an output circuit that receives a signal output from the oscillation circuit and outputs an oscillation signal, and a heat generating circuit, and in the heat generating circuit, a current flows in a first period after supply of a power supply voltage from the outside is started to generate heat and no current flows in the second period after the first period ends.

公开(公告)号：US20200309606A1

公开(公告)日：2020-10-01

申请号：US16831491

申请日：2020-03-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Takashi NOMIYA ,  Mitsuaki SAWADA ,  Naoki II

IPC: G01K7/01 ,  H03B5/04

Abstract: Provided is a temperature sensor including a bipolar transistor, a resistor, and a variable resistance circuit. The resistor is provided between a first node coupled to a base node of the bipolar transistor and a collector node of the bipolar transistor. The variable resistance circuit is provided between an emitter node of the bipolar transistor and a ground node.

公开(公告)号：US20200313619A1

公开(公告)日：2020-10-01

申请号：US16835440

申请日：2020-03-31

Applicant: Seiko Epson Corporation

Inventor： Mitsuaki SAWADA ,  Naoki II ,  Yosuke ITASAKA

IPC: H03B5/36 ,  H03B5/04

Abstract: An integrated circuit device includes a first pad and a second pad electrically coupled to one end and the other end of a resonator, an oscillation circuit that is electrically coupled to the first pad and the second pad and generates an oscillation signal by causing the resonator to oscillate, and an output circuit that outputs a clock signal based on the oscillation signal. The oscillation circuit is disposed along a first side of the integrated circuit device among the first side, a second side that intersects the first side, a third side that is an opposite side of the first side, and a fourth side that is an opposite side of the second side. The first pad and the second pad are disposed in the oscillation circuit along the first side in a plan view, and the output circuit is disposed along the second side.

公开(公告)号：US20200244221A1

公开(公告)日：2020-07-30

申请号：US16773694

申请日：2020-01-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Masayuki ISHIKAWA ,  Naoki II

IPC: H03B5/04 ,  H03B5/36 ,  H03L1/02 ,  H03F3/45

Abstract: An oscillator includes a resonator and an integrated circuit, the integrated circuit includes an oscillation circuit that oscillates the resonator, a temperature sensor, a temperature compensation circuit that compensates for temperature characteristics of the resonator based on an output signal of the temperature sensor, an output circuit that receives a signal output from the oscillation circuit and outputs an oscillation signal, and a heat generating circuit, and in the heat generating circuit, a current flows in a first period after supply of a power supply voltage from the outside is started to generate heat and no current flows in the second period after the first period ends.

公开(公告)号：US20240048100A1

公开(公告)日：2024-02-08

申请号：US18359234

申请日：2023-07-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA ,  Takashi NOMIYA ,  Naoki II

IPC: H03B5/04 ,  H03B5/36

CPC classification number: H03B5/04 ,  H03B5/36

Abstract: A circuit apparatus includes a clock signal generation circuit configured to generate a clock signal by a resonator, an output circuit configured to operate in a first state or a second state in which a consumption current is different from that in the first state and output an output clock signal, and a temperature compensation circuit configured to compensate for a frequency-temperature characteristic of the clock signal based on a temperature detection signal. When the output circuit operates in the first state, the temperature compensation circuit outputs a first temperature compensation signal that compensates for a frequency-temperature characteristic when the output circuit operates in the first state, and the clock signal generation circuit generates a clock signal based on the first temperature compensation signal. When the output circuit operates in the second state, the temperature compensation circuit outputs a second temperature compensation signal that compensates for a frequency-temperature characteristic when the output circuit operates in the second state, and the clock signal generation circuit generates a clock signal based on the second temperature compensation signal.

公开(公告)号：US20220352872A1

公开(公告)日：2022-11-03

申请号：US17732626

申请日：2022-04-29

Applicant: Seiko Epson Corporation

Inventor： Yosuke ITASAKA ,  Naoki II

IPC: H03H9/05 ,  H03B5/36 ,  H03H9/10 ,  H03H9/19

Abstract: An integrated circuit apparatus includes a pad via which an AC signal is inputted or outputted, a circuit that overlaps with the pad in the plan view, protective wiring provided between the pad and the circuit, and a resistor having one end electrically coupled to the protective wiring and another end electrically coupled to an electric charge discharging path.

公开(公告)号：US20200295707A1

公开(公告)日：2020-09-17

申请号：US16818743

申请日：2020-03-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA ,  Naoki II

IPC: H03B5/02 ,  H03B5/36 ,  H03K3/356 ,  G11C16/10

Abstract: Provided is a circuit device including: a first terminal electrically coupled to one end of a vibrator; a second terminal electrically coupled to the other end of the vibrator; an oscillation circuit electrically coupled to the first terminal and the second terminal, and oscillating the vibrator; a third terminal to which an external input signal is input; a switch circuit provided between a first wiring which couples the first terminal and the oscillation circuit with each other and the third terminal, and having a P-type transistor; and a control circuit outputting a regulated voltage, in which a power supply voltage is regulated, as a substrate voltage of the P-type transistor.

公开(公告)号：US20240322757A1

公开(公告)日：2024-09-26

申请号：US18613421

申请日：2024-03-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Yosuke ITASAKA ,  Kohei BEPPU ,  Naoki II

IPC: H03B5/36

CPC classification number: H03B5/36

Abstract: A circuit device is configured to switching between a first mode in which phase noise of an output clock signal is lower than that in a second mode and the second mode in which power consumption is smaller than that in the first mode, and the circuit device includes an oscillation circuit configured to generate an oscillation signal, a waveform shaping circuit configured to perform waveform shaping on the oscillation signal to obtain a rectangular wave clock signal; and an output circuit configured to output the output clock signal based on the clock signal. A driving capability of the waveform shaping circuit in the first mode is higher than a driving capability of the waveform shaping circuit in the second mode.

公开(公告)号：US20220310504A1

公开(公告)日：2022-09-29

申请号：US17705668

申请日：2022-03-28

Applicant: Seiko Epson Corporation

Inventor： Naoki II ,  Yosuke ITASAKA

IPC: H01L23/50 ,  H03H3/02 ,  H03H9/05 ,  H03H9/10 ,  H03H9/17 ,  H03B5/36

Abstract: The integrated circuit device includes: a pad that has a shape having a longitudinal direction and a lateral direction; a circuit that overlaps the pad in a plan view, and that is electrically coupled to the pad; a lead-out wiring that is led out from an outer edge on a longitudinal side of the pad along the lateral direction of the pad; and a via group that electrically couples the lead-out wiring and a wiring of the circuit and that does not overlap the pad in the plan view.