US 2026/0083377 A1 · ELECTROCARDIOGRAM ANALOG FRONT END

Abstract

An analog to digital converter for use in an electrocardiogram device is provided that includes a voltage supply; an operational amplifier, including: a positive input pin; an inverting input pin; and an output pin; an output node, connected directly to the output pin and the inverting input pin; an ECG electrode, connected to the output node via a first resistor; a reference voltage, connected directly to the output node; and a feedback node, connected to directly to the positive input pin, connected to the voltage supply via a second resistor, and connected to a ground via a third resistor and a first capacitor, wherein the third resistor and the first capacitor are connected in parallel between the feedback node and the ground.

Claims20

Dependent claims

An analog front end for an electrocardiogram (ECG) measuring device, comprising:

a first op-amp, configured to receive a signal input from an ECG patch at a first input port and a feedback signal at a second input port and to produce an amplified output of an ECG signal via an output port;
and
a second op-amp, configured as an integrator that receives the amplified output from the first op-amp at a second input port and integrates the amplified output against a common voltage received at a first input port to produce an integrated output via an output port that is provided as a reference output and as at least a portion of the feedback signal.

Dependencies are inferred from the claim text.

Electrocardiogram analog front end

Life of this patent

Electrocardiogram analog front end

Life of this patent

Abstract

Claims20