RESONATOR AND OVERSAMPLING A/D CONVERTER
First Claim
Patent Images
1. A resonator comprising:
- an operational amplifier coupled to a common node at a non-inverting input terminal;
a first resistive element coupled between a first node and an inverting input terminal of the operational amplifier;
a second resistive element coupled between the first node and an output terminal of the operational amplifier;
a first capacitive element coupled between a second node and the inverting input terminal of the operational amplifier;
a second capacitive element coupled between the second node and the output terminal of the operational amplifier;
a third capacitive element coupled between the first node and the common node;
a third resistive element coupled between the second node and the common node;
a fourth resistive element coupled between the first node and a signal input terminal;
a fourth capacitive element coupled between the second node and the signal input terminal;
a fifth capacitive element coupled between the first node and the signal input terminal; and
a sixth capacitive element coupled between the second node and the common node.
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Abstract
Two resistive elements and a capacitive element are coupled between a first node and each of an inverting input terminal of an operational amplifier, an output terminal of the operational amplifier, and a common node. A resistive element and a capacitive element are coupled between the first node and a signal input terminal. Two capacitive elements and a resistive element are coupled between a second node and each of the inverting input terminal, the output terminal, and the common node. Two capacitive elements are coupled between the second node and each of the signal input terminal, and the common node.
14 Citations
16 Claims
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1. A resonator comprising:
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an operational amplifier coupled to a common node at a non-inverting input terminal; a first resistive element coupled between a first node and an inverting input terminal of the operational amplifier; a second resistive element coupled between the first node and an output terminal of the operational amplifier; a first capacitive element coupled between a second node and the inverting input terminal of the operational amplifier; a second capacitive element coupled between the second node and the output terminal of the operational amplifier; a third capacitive element coupled between the first node and the common node; a third resistive element coupled between the second node and the common node; a fourth resistive element coupled between the first node and a signal input terminal; a fourth capacitive element coupled between the second node and the signal input terminal; a fifth capacitive element coupled between the first node and the signal input terminal; and a sixth capacitive element coupled between the second node and the common node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. A resonator comprising:
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an operational amplifier coupled to a common node at a non-inverting input terminal; a first resistive element coupled between a first node and an inverting input terminal of the operational amplifier; a second resistive element coupled between the first node and an output terminal of the operational amplifier; a first capacitive element coupled between a second node and the inverting input terminal of the operational amplifier; a second capacitive element coupled between the second node and the output terminal of the operational amplifier; a third capacitive element coupled between the first node and the common node; a third resistive element coupled between the second node and the common node; a fourth resistive element coupled between the first node and a signal input terminal; a fourth capacitive element coupled between the second node and the signal input terminal; a fifth resistive element coupled between the second node and the signal input terminal; and a sixth resistive element coupled between the first node and the common node. - View Dependent Claims (9, 10, 11, 12, 13, 14, 16)
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Specification