Signal processing circuit
AssigneeOMRON Corporation
InventorYoshitaka Kikunaga
Life of this patent
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Abstract
A signal processing circuit with high noise resistance is realized. The signal processing circuit includes: a first pre-stage circuit that includes a first input terminal; and a second pre-stage circuit that includes a second input terminal. A resistive element with one end connected to the first input terminal and a capacitative element with one electrode connected to the ground are provided in the first pre-stage circuit. The other end of the first resistive element and the other electrode of the first capacitative element are connected to each other. An output node of the first pre-stage circuit and an output node of the second pre-stage circuit are connected to a post-stage circuit.
Claims19
A signal processing circuit comprising:
- a first pre-stage circuit that includes a first input terminal for receiving one of differential input;
- a second pre-stage circuit that includes a second input terminal for receiving another one of the differential input;
- a post-stage circuit that includes a differential output amplifier;
- and
- an analog-to-digital conversion circuit connected to the post-stage circuit,
- wherein the first pre-stage circuit includes a first resistive element with one end connected to the first input terminal and a first capacitative element with one grounded electrode,
- an other end of the first resistive element and an other electrode of the first capacitative element are connected to each other, and
- an output node of the first pre-stage circuit and an output node of the second pre-stage circuit are connected to the post-stage circuit.
Dependencies are inferred from the claim text.