18613447. CIRCUIT DEVICE AND OSCILLATOR (SEIKO EPSON CORPORATION)
Contents
CIRCUIT DEVICE AND OSCILLATOR
Organization Name
Inventor(s)
Takashi Nomiya of Matsumoto (JP)
CIRCUIT DEVICE AND OSCILLATOR
This abstract first appeared for US patent application 18613447 titled 'CIRCUIT DEVICE AND OSCILLATOR
Original Abstract Submitted
A circuit device is configured to switching between a first mode in which phase noise of an output clock signal is low and a second mode in which power consumption is small, and includes an oscillation circuit configured to generate an oscillation signal, an output circuit configured to output the output clock signal, a temperature sensor configured to output a temperature detection signal, a temperature compensation circuit configured to perform temperature compensation on an oscillation frequency based on the temperature detection signal, and a control circuit. The control circuit performs control such that a power supply voltage supplied to the oscillation circuit in the first mode is higher than a power supply voltage supplied to the oscillation circuit in the second mode. In addition, the control circuit performs control such that at least one of a reference voltage supplied to the temperature compensation circuit and a reference current supplied to the temperature sensor does not change between the first mode and the second mode.
