Abstract: This present invention is directed to a stage circuit for a pipelined analog-to-digital converter. The stage circuit includes an amplifier, a comparator, a first compensator and a second compensator, and three modes are developed for the stage circuit in signal processing: a sampling mode, a first amplifying mode and a second amplifying mode. In the sampling mode, the amplifier is inputted with an analog input signal; the comparator compares the analog input signal with a reference signal, and then generates a first digital output code. In the first amplifying mode, the first compensator selectively adds a first compensation value to the analog input signal according to the first digital output code, and then generates a first input signal; the amplifier amplifies the first input signal and then generates a first output signal; the comparator compares the first output signal with the reference signal and then generates a second digital output signal.

Abstract: This present invention is directed to a stage circuit for a pipelined analog-to-digital converter. The stage circuit includes an amplifier, a comparator, a first compensator and a second compensator, and three modes are developed for the stage circuit in signal processing: a sampling mode, a first amplifying mode and a second amplifying mode. In the sampling mode, the amplifier is inputted with an analog input signal; the comparator compares the analog input signal with a reference signal, and then generates a first digital output code. In the first amplifying mode, the first compensator selectively adds a first compensation value to the analog input signal according to the first digital output code, and then generates a first input signal; the amplifier amplifies the first input signal and then generates a first output signal; the comparator compares the first output signal with the reference signal and then generates a second digital output signal.