Low-Power CMOS Local-Feedback Amplifier Using Dynamic Biasing

This paper proposes a low-power CMOS local-feedback amplifier. The local-feedback amplifier, which has been proposed in [1], has two constant current sources for biasing. They determine the total power dissipation and depend on the maximum amplitude of the input signal voltage. The proposed circuit uses dynamic biasing to reduce the power dissipation when the input signal voltage is small. Results of computer simulations with MOSFET parameters of 0.18 $\mu \mathbf{m}$ standard CMOS technology show similar performance to the conventional one even with reduced power.