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US 2026/0240479 A1Published application
Sense amplifier for a physiological sensor and/or other sensors
AssigneeInspire Medical Systems, Inc.
InventorsJan Verstreken, Tim Piessens, Heather Orser, David Dieken, John Rondoni, Timothy Denison
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Abstract
A device includes a sensor signal input node and a high-pass filter stage. The high-pass filter stage includes an operational amplifier and a feedback integrator. The operational amplifier includes an input node coupled to the sensor signal input node. The feedback integrator is coupled between an output node of the operational amplifier and the input node of the operational amplifier to set a high-pass pole frequency of the high-pass filter stage.
Claims20
A method comprising:
- receiving a sensor signal at a sensor signal input node;
- and
- filtering the received sensor signal via a high-pass filter stage comprising:
- amplifying the received sensor signal via an operational amplifier comprising an input node coupled to the sensor signal input node;
- and
- integrating feedback of the operational amplifier between an output node of the operational amplifier and the input node of the operational amplifier to set a high-pass pole frequency of the high-pass filter stage.
3 more elements
A method comprising:
- receiving a physiologic sensor signal at a sensor signal input node;
- and
- filtering the received physiologic sensor signal via a high-pass filter stage comprising:
- amplifying the received physiologic sensor signal via an operational amplifier comprising an input node coupled to the sensor signal input node;
- and
- integrating feedback of the operational amplifier between an output node of the operational amplifier and the input node of the operational amplifier to set a high-pass pole frequency of the high-pass filter stage.
3 more elements
A method comprising:
- selectively coupling a sensor signal input node to one of a plurality of electrode nodes in response to an electrode selection signal, each electrode of the plurality of electrodes electrically coupled to one of a plurality of sensors;
- receiving a sensor signal at the sensor signal input node;
- and
- filtering the received sensor signal via a high-pass filter stage comprising:
- amplifying the received sensor signal via an operational amplifier comprising an input node coupled to the sensor signal input node;
- and
- integrating feedback of the operational amplifier between an output node of the operational amplifier and the input node of the operational amplifier to set a high-pass pole frequency of the high-pass filter stage.
4 more elements
Dependencies are inferred from the claim text.