Structure of an integrated crystal oscillator package
AssigneeDapa Inc.
InventorTing-Yi Chen
Life of this patent
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Abstract
A structure of an integrated crystal oscillator package has a first quartz crystal resonator, a second quartz crystal resonator, and application-specific integrated circuit chip (ASIC) combined in a package. The ASIC has a switch control for receiving audio formats of 44.1 kHz and 48 kHz with different hi-fidelity (hi-fi). The first quartz crystal resonator has a first clock rate corresponding to the 44.1 kHz frequency and the second quartz crystal resonator has a second clock rate corresponding to the 48 kHz frequency to be switched by the present invention in operation.
Claims8
A structure of an integrated crystal oscillator package, comprising:
- a substrate having a first depression arranged thereon and a second depression arranged at a bottom thereof, said first depression having a first stair surface with a first conductive section and a second stair surface with a second conductive section, and said second depression having a third conductive section;
- a first quartz crystal resonator having an end thereof fixed on the first conductive section;
- a second quartz crystal resonator having an end thereof fixed on the second conductive section;
- a cover disposed on the first depression for sealing the first and second quartz crystal resonators therein;
- and
- an application-specific integrated circuit chip (ASIC) coupled to the third conductive section, said third conductive section further separately connected to the first and second conductive sections;
- whereby the ASIC has a switch control to switch between audio formats with different degree of hi-fidelity (hi-fi) when receiving them and to operate correspondingly to a first clock rate output from the first quartz crystal resonator or to a second clock rate output from the second quartz crystal resonator.
A structure of an integrated crystal oscillator package, comprising:
- a substrate having a first depression arranged thereon and a second depression arranged at a bottom thereof, said first depression having a first stair surface with a first conductive section and a second stair surface with a second conductive section, and said second depression having a third conductive section;
- a first quartz crystal resonator having an end thereof fixed on the first conductive section;
- a second quartz crystal resonator having an end thereof fixed on the second conductive section;
- a cover disposed on the first depression for sealing the first and second quartz crystal resonators therein;
- and
- an application-specific integrated circuit chip (ASIC) coupled to the third conductive section, said third conductive section further separately connected to the first and second conductive sections;
- whereby the ASIC has a switch control for operation when receiving audio format of 44.1 kHz and 48 kHz with different degree of hi-fidelity (hi-fi), the 44.1 kHz and a multiple thereof being corresponding to a first clock rate output from the first quartz crystal resonator and the 48 kHz and a multiple thereof being corresponding to a second clock rate output from the second quartz crystal resonator.
Dependencies are inferred from the claim text.