ELECTROCARDIOGRAM SENSOR CHIP, SYSTEM ON CHIP (SOC), AND WEARABLE APPLIANCE

摘要

An electrocardiogram(ECG) sensor chip which has a structure used in wearable devices comprises: a first switch input terminal which is controlled by a switch signal and receives a first ECG signal; a second switch input terminal which receives a second ECG signal; a switch which includes a first switch output terminal and a second switch output terminal; a first amplifier input terminal which receives one of either the first ECG signal or the second ECG signal that are outputted from the first switch output terminal; a second amplifier input terminal which receives another one of either the first ECG signal or the second ECG signal that are outputted from the second switch output terminal; an amplifier which amplifies the difference of the first ECG signal and the second ECG signal; a position indicator which generates the switch signal that has one of either a first state or a second state. The switch responding to the first state of the switch signal outputs the first ECG signal from the first switch input terminal to the first switch output terminal, and outputs the second ECG signal from the second switch input terminal to the second switch output terminal. The switch responding to the second state of the switch signal outputs the first ECG signal from the first switch input terminal to the second switch output terminal, and outputs the second ECG signal from the second switch input terminal to the first switch output terminal.