title: A 8.9-ENOB 2.5-εW 150-KS/s non-binary redundant successive approximation ADC in 0.18-microm CMOS for bio-implanted devices.
abstract: A successive approximation analog-to-digital converter (SAR ADC) with a split-capacitor switching scheme implementing the generalized non-binary redundant SAR algorithm and an energy efficient level shifter is proposed for bio-implanted applications. The generalized non-binary redundant SAR algorithm removes the radix constraint in conventional non-binary redundant SAR algorithm, and the energy efficient level shifter allows optimal power supplies to be chosen independently for the analog and digital blocks. A FOM of 34.7fJ/step has been achieved.
authors.affiliation: Integrated Circuits and Systems Laboratory, Institute of Microelectronics, A*STAR (Agency of Science, Technology and Research), Singapore.
authors.forename: Kok Lim
authors.initials: KL
authors.lastname: Chan
authors.forename: Andreas Astuti
authors.initials: AA
authors.lastname: Lee
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Yuan
authors.forename: Kotlanka R
authors.initials: KR
authors.lastname: Krishna
authors.forename: Minkyu
authors.initials: M
authors.lastname: Je
mesh_terms: D000703:Analog-Digital Conversion; D015374:Biosensing Techniques / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D019736:Prostheses and Implants; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*