An ultrasonic sensing circuitry (200, 300, 400) comprising: an ultrasonic sensor circuit, an input circuit, a reset circuit, a storage circuit, a selection circuit, a source follower, and a compensation circuit, wherein the ultrasonic sensor circuit is coupled to a first node and a first supply voltage terminal, and configured to emit and receive an ultrasonic signal, and generate a sensing voltage corresponding to the received ultrasonic signal to provide the sensing voltage to the first node; wherein the input circuit is coupled to a first control signal terminal, the first node, and a second node, and is configured to provide the sensing voltage of the first node to the second node based on a first control signal from the first control signal terminal; wherein the reset circuit is coupled to a reset control signal terminal, the second node, and the first supply voltage terminal, and is configured to provide a first supply voltage from the first supply voltage terminal to the second node based on a reset control signal (RESET) from the reset control signal terminal to reset the voltage of the second node; wherein the storage circuit is coupled between the second node and a Z second supply voltage terminal, and is configured to store a voltage difference between the second node and the second supply voltage terminal; wherein the selection circuit is coupled to a selection signal terminal, a third supply voltage terminal, and a third node, and is configured to provide a third supply voltage from the third supply voltage terminal to the third node based on a selection signal from the selection signal terminal; wherein the source follower comprises a first electrode coupled to the third node, a control electrode coupled to the compensation circuit via a fourth node, and a second electrode coupled to an output terminal (OUTPUT), and is configured to output a current corresponding to a voltage between the first electrode and the control electrode via the output terminal (OUTPUT); wherein the compensation circuit is coupled to the second supply voltage terminal, a second control signal terminal, a third control signal terminal, the second node, the third node, the fourth node, and the output terminal (OUTPUT), and is configured to receive the sensing voltage of the second node and provide a compensated sensing voltage to the control electrode of the source follower according to the sensing voltage and the third supply voltage; and wherein both the first supply voltage and the second supply voltage are lower than the third supply voltage. wherein the ultrasonic sensor circuit is coupled to a first node and a first supply voltage terminal, and configured to emit and receive an ultrasonic signal, and generate a sensing voltage corresponding to the received ultrasonic signal to provide the sensing voltage to the first node; wherein the input circuit is coupled to a first control signal terminal, the first node, and a second node, and is configured to provide the sensing voltage of the first node to the second node based on a first control signal from the first control signal terminal; wherein the reset circuit is coupled to a reset control signal terminal, the second node, and the first supply voltage terminal, and is configured to provide a first supply voltage from the first supply voltage terminal to the second node based on a reset control signal (RESET) from the reset control signal terminal to reset the voltage of the second node; wherein the storage circuit is coupled between the second node and a Z second supply voltage terminal, and is configured to store a voltage difference between the second node and the second supply voltage terminal; wherein the selection circuit is coupled to a selection signal terminal, a third supply voltage terminal, and a third node, and is configured to provide a third supply voltage from the third supply voltage terminal to the third node based on a selection signal from the selection signal terminal; wherein the source follower comprises a first electrode coupled to the third node, a control electrode coupled to the compensation circuit via a fourth node, and a second electrode coupled to an output terminal (OUTPUT), and is configured to output a current corresponding to a voltage between the first electrode and the control electrode via the output terminal (OUTPUT); wherein the compensation circuit is coupled to the second supply voltage terminal, a second control signal terminal, a third control signal terminal, the second node, the third node, the fourth node, and the output terminal (OUTPUT), and is configured to receive the sensing voltage of the second node and provide a compensated sensing voltage to the control electrode of the source follower according to the sensing voltage and the third supply voltage; and wherein both the first supply voltage and the second supply voltage are lower than the third supply voltage.