CMOS Circuits for Electromagnetic Vibration Transducers : Interfaces for Ultra Low Voltage Energy Harvesting Chip integrated power management solutions are a must for ultra low power systems. This enables not only the optimization of innovative sensor applications. It is also essential for integration and miniaturization of energy harvesting supply strategies of portable and autonomous monitoring systems. The book particularly addresses interfaces for energy harvesting which are the key element to connect micro transducers to energy storage elements. Main features of the book are: A comprehensive technology and application review basics on transducer mechanics fundamental circuit and control design prototyping and testing up to sensor system supply and applications. Novel interfacing concepts including active rectifiers MPPT methods for efficient tracking of DC as well as AC sources and a fully integrated charge pump for efficient maximum AC power tracking at sub 100µW ultra low power levels. The chips achieve one of widest presented operational voltage range in standard CMOS technology: 0.44V to over 4.1V. Two special chapters on analog circuit design it studies benefits and obstacles on implemented chip prototypes with three goals: ultra low power wide supply voltage range and integration with standard technologies. Alternative design approaches are pursued using bulk input transistor stages in forward bias operation for amplifiers modulators and references. Comprehensive Appendix with additional fundamental analysis design and scaling guidelines circuit implementation tables and dimensions schematics source code listings bill of material etc. The discussed prototypes and given design guidelines are tested with real vibration transducer devices. The intended readership is graduate students in advanced courses academics and lecturers R&D engineers