A 3nV/vHz programmable gain/BW mixed-signal 4th order Chebyshev high-pass filter for ADSL/VDSL analog front end in 28nm CMOS

A fourth-order Chebyshev high-pass filter (HPF) that achieves input-referred noise of 3nV/√Hz, MTPR greater than 72dB, and power consumption of less than 81mW with 0.7mm
²
area in 28nm CMOS is presented. Area and power reductions are realized via a mixed-signal filter topology.