Continuous time pipeline analog-to-digital converter and digital reconstruction filter thereof

The digital reconstruction filter comprises a first finite impulse response filter and a second finite impulse response filter, output values of the first finite impulse response filter and the second finite impulse response filter are obtained through a first transfer function and a second transfer function respectively, and an output value of the continuous time pipeline analog-to-digital converter can be generated. A second input value corresponding to the second finite impulse response filter is determined according to the output value of the analog filter; the first transfer function and the second transfer function are determined according to a transfer function of an infinite impulse response filter for fitting the analog filter. According to the invention, when the analog filter in the continuous time pipeline analog-to-digital converter is fitted, the order of a finite impulse response filter can be reduced to reduce power consumption, and the defect of poor system loop stability caused by the adopti