CMOS Embedded High-Efficiency Cardiac Pacemakers Design

Abstract

With the increasing incidence of sudden cardiac death in recent years, the importance of pacemakers has become particularly important. This paper study CMOS circuit design in pacemakers so that they can stay for a long time without charging. Firstly, compared with class A and B amplifier which has low efficiency and high distortion respectively, class AB amplifiers act as a balance between linearity and efficiency, achieving high current drive capability with very low static power consumption. A current mirror based on transduction multiplication to achieve ultra-low current consumption confirms the usefulness of AB amplifiers in pacemakers. This paper design a low power consumption circuit. Firstly, we compare the circuit diagrams of different A, B class amplifiers and analyze their characteristics. Secondly, we analyzed the principle of Class AB amplifier and verified its efficient characteristics. Finally, we studied the effect of this amplifier on a cardiac pacemaker.