Patent ID: 11937947
Assignee: MEDIATEK INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A circuitry of a biopotential acquisition system, comprising:
an input node, configured to receive an input signal from an electrode of the biopotential acquisition system;
an electrode-tissue impedance (ETI) transmitter, configured to generate a transmitter signal;
a capacitor, wherein a first node of the capacitor is coupled to the ETI transmitter, and a second node of the capacitor is coupled to the input node; and
an ETI receiver, coupled to the input node, configured to receive the transmitter signal from the input node to generate an ETI;
wherein the ETI transmitter comprises:
a digital-to-analog converter (DAC), configured to receive a digital input signal to generate the transmitter signal; and
a filter, configured to filter the transmitter signal to generate a filtered transmitter signal to the first node of the capacitor, wherein the input node of the circuitry receives the filtered transmitter signal from the second node of the capacitor.