Abstract: A high pass filter chip with a large size capacitor is disclosed. The high pass filter chip includes a fully-differential sensing device circuit. The fully differential sensing device circuit includes a first amplifier circuit, a second amplifier circuit, and a miller capacitor module including a third amplifier. The first amplifier circuit includes a first transistor and a second transistor, in which the base of the first transistor is coupled to the base of the second transistor. The second amplifier circuit includes a third transistor and a fourth transistor, in which the base of the third transistor is coupled to the base of the fourth transistor. A first input terminal of the third amplifier is coupled to the base of the second transistor of the first amplifier circuit, and a second terminal of the amplifier is coupled to the base of the third transistor of the second amplifier circuit.

Abstract: A high pass filter chip with a large size capacitor is disclosed. The high pass filter chip includes a fully-differential sensing device circuit. The fully differential sensing device circuit includes a first amplifier circuit, a second amplifier circuit, and a miller capacitor module including a third amplifier. The first amplifier circuit includes a first transistor and a second transistor, in which the base of the first transistor is coupled to the base of the second transistor. The second amplifier circuit includes a third transistor and a fourth transistor, in which the base of the third transistor is coupled to the base of the fourth transistor. A first input terminal of the third amplifier is coupled to the base of the second transistor of the first amplifier circuit, and a second terminal of the amplifier is coupled to the base of the third transistor of the second amplifier circuit.

Abstract: A fully differential DC offset device circuit utilized in a high-pass filter is provided. The fully differential DC offset device circuit includes a first amplifying circuit, a second amplifying circuit and a Miller capacitor. The first amplifying circuit includes a first transistor and a second transistor, wherein a base of the first transistor is electrically connected to a base of the second transistor. The second amplifying circuit includes a third transistor and a fourth transistor, wherein a base of the third transistor is electrically connected to a base of the fourth transistor. The Miller capacitor includes an amplifier, wherein a first input terminal of the amplifier is electrically connected to the base of the second transistor of the first amplifying circuit, and a second input terminal of the amplifier is electrically connected to the base of the third transistor of the second amplifying circuit.