This paper presents a CMOS fully differential current feedback operational amplifier with controllable 3-dB bandwidth. The FDCFOA has the advantage of a wide range controllable 3-dB bandwidth (~57 MHz ...

This paper presents a ΔΣ modulator with ring amplifiers to decrease the power consumption. The proposed ΔΣ modulator employs a technique of cutting-off the current of ring amplifiers after they are ...