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US 11,616,474 B2Granted
Circuit device and oscillator
AssigneeSeiko Epson Corporation
InventorTeppei Higuchi
Life of this patent
Estimating the term…
Abstract
A circuit device includes an oscillation circuit generating an oscillation signal by oscillating a vibrator, a temperature sensor circuit performing an intermittent operation, a logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit, and a power supply circuit supplying power to the oscillation circuit. Further, the logic circuit or the power supply circuit is disposed between the oscillation circuit and the temperature sensor circuit.
Claims13
A circuit device comprising:
- an oscillation circuit generating an oscillation signal by oscillating a vibrator;
- a temperature sensor circuit performing an intermittent operation;
- a logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit;
- and
- a power supply circuit supplying power to the oscillation circuit, wherein
- the logic circuit or the power supply circuit is disposed between the oscillation circuit and the temperature sensor circuit,
- the temperature sensor circuit performs the intermittent operation of obtaining temperature data corresponding to temperature during an operation period and stopping an operation of the temperature sensor circuit after outputting the temperature data to the logic circuit, and
- the logic circuit his a latch circuit that latches the temperature data output by the temperature sensor circuit during the operation period and performs the temperature compensation processing based on the latched temperature data even ring a stop period of the temperature sensor circuit.
5 more elements
A circuit device comprising:
- an oscillation circuit generating an oscillation signal by oscillating a vibrator;
- a temperature sensor circuit performing an intermittent operation;
- logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit;
- and
- a power supply circuit supplying power to the oscillation circuit, wherein
- the logic circuit or the power supply circuit is disposed between the oscillation circuit and the temperature sensor circuit,
- the temperature sensor circuit includes
- a ring oscillator,
- a counter circuit that performs count processing for an output pulse signal of the ring oscillator by using a clock signal based on the oscillation signal and outputs temperature data based on a count value obtained by the count processing, and
- a regulator that supplies a regulated power supply voltage to the ring oscillator, and
- the regulator supplies the regulated power supply voltage to the ring oscillator during a period of the intermittent operation.
8 more elements
Dependencies are inferred from the claim text.