A low pass filter (LPF, 100), comprising: a first amplifier stage, comprising a differential operational amplifier, wherein the first amplifier stage is arranged to process a differential input signal (DIN1; DIN2) to generate a differential intermediate signal (DM1; DM2), wherein the differential input signal (DIN1; DIN2) has a first input signal and a second input signal, and the differential intermediate signal (DM1; DM2) has a first intermediate signal and a second intermediate signal; and a second amplifier stage, having no common-mode feedback, CMFB, and arranged to process the differential intermediate signal (DM1; DM2) to generate a differential output signal (DOUT1; DOUT2), wherein the differential output signal (DOUT1; DOUT2) has a first output signal (DOUT1) corresponding to the first input signal and a second output signal (DOUT2)corresponding to the second input signal. wherein the second amplifier stage comprises: - a first amplifier, having a first non-inverting input end, a first inverting input end and a first output end, wherein the first non-inverting input end is arranged to receive a reference voltage (VREF), the first inverting input end is arranged to receive the first intermediate signal, and the first output end is arranged to output the first output signal (DOUT1); and - a second amplifier, having a second non-inverting input end, a second inverting input end, and a second output end, wherein the second non-inverting input end is arranged to receive the reference voltage (VREF), the second inverting input end is arranged to receive the second intermediate signal, and the second output end is arranged to output the second output signal (DOUT2). a first amplifier stage, comprising a differential operational amplifier, wherein the first amplifier stage is arranged to process a differential input signal (DIN1; DIN2) to generate a differential intermediate signal (DM1; DM2), wherein the differential input signal (DIN1; DIN2) has a first input signal and a second input signal, and the differential intermediate signal (DM1; DM2) has a first intermediate signal and a second intermediate signal; and a second amplifier stage, having no common-mode feedback, CMFB, and arranged to process the differential intermediate signal (DM1; DM2) to generate a differential output signal (DOUT1; DOUT2), wherein the differential output signal (DOUT1; DOUT2) has a first output signal (DOUT1) corresponding to the first input signal and a second output signal (DOUT2)corresponding to the second input signal. wherein the second amplifier stage comprises: - a first amplifier, having a first non-inverting input end, a first inverting input end and a first output end, wherein the first non-inverting input end is arranged to receive a reference voltage (VREF), the first inverting input end is arranged to receive the first intermediate signal, and the first output end is arranged to output the first output signal (DOUT1); and - a second amplifier, having a second non-inverting input end, a second inverting input end, and a second output end, wherein the second non-inverting input end is arranged to receive the reference voltage (VREF), the second inverting input end is arranged to receive the second intermediate signal, and the second output end is arranged to output the second output signal (DOUT2). - a first amplifier, having a first non-inverting input end, a first inverting input end and a first output end, wherein the first non-inverting input end is arranged to receive a reference voltage (VREF), the first inverting input end is arranged to receive the first intermediate signal, and the first output end is arranged to output the first output signal (DOUT1); and - a second amplifier, having a second non-inverting input end, a second inverting input end, and a second output end, wherein the second non-inverting input end is arranged to receive the reference voltage (VREF), the second inverting input end is arranged to receive the second intermediate signal, and the second output end is arranged to output the second output signal (DOUT2).