A chip for sensing a physiological signal comprises: an input unit for receiving a first electrocardiogram (ECG) signal a filter for generating a second ECG signal by filtering the first ECG signal an amplifying unit for generating a third ECG signal by amplifying the second ECG signal an Analog-to-Digital converting unit for converting the third ECG signal into a digital signal an operating unit for generating a plurality of analysis data by operational analyzing the digital signal and an output unit for outputting the plurality of analysis data. Therefore, the manufacturing cost of the chip is decreased and the chip is suitable for use in small-scale devices.
