I would like to design a phase shifter using active allpass filter. The filter is a part of a receive chain so it must have good noise and sfdr performance. The BW is 0.5 to 2.5MHz. Can you please recommend on a suitable op amp and matching circuit to reduce the noise?
The harmonics must not exceed 65dB when input is 0.1V p2p
Available are +/- 5V supplies