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US 11,728,770 B2Granted
Semiconductor device and oscillation circuit
AssigneeLapis Semiconductor Co., Ltd.
InventorKoki Nakanishi
Life of this patent
Estimating the term…
Abstract
A semiconductor device including a first inverter circuit connected in parallel to a crystal vibrating element; a second inverter circuit connected to the first inverter circuit so as to share an input therewith, and outputting an oscillation signal; and a wave filter connected to the second inverter circuit and having a passband that is determined in advance and includes an oscillation frequency of the oscillation signal.
Claims5
A semiconductor device, comprising:
- a first inverter circuit connected in parallel to a crystal vibrating element;
- a second inverter circuit connected to the first inverter circuit so as to share an input therewith, and output an oscillation signal;
- and
- a wave filter connected to the second inverter circuit and having a passband that is determined in advance and includes an oscillation frequency of the oscillation signal,
- wherein the wave filter is configured by a plurality of wave filters that are connected in series, and
- the wave filter is a bandpass filter having a third inverter circuit, a capacitor connected in series to an input of the third inverter circuit, and a resistor connected between the input and an output of the third inverter circuit.
3 more elements
Dependencies are inferred from the claim text.