A 1.5V 120nW CMOS programmable monolithic reference generator for wireless implantable system

Author

Chang, Sun-Il ; AlAshmouny, K. ; Yoon, Euisik

Author_Institution

Electr. Eng. & Comput. Sci. Dept., Univ. of Michigan, Ann Arbor, MI, USA

fYear

2011

fDate

Aug. 30 2011-Sept. 3 2011

Firstpage

2981

Lastpage

2984

Abstract

We implement and characterize a 1.5V 120nW CMOS programmable monolithic reference generator for wireless implantable system. The proposed generator is optimized to be tolerable for power supply variation in a small area with programmability to generate various reference voltages and currents. The measured power line sensitivity are 0.02 / 1.1%/V for voltage and current reference, respectively. This reference generator can operate for input voltage ranging from 1.5V to 3.5V and implemented in an area of 0.011 mm², which is the smallest monolithic reference generator in 0.25μm technology to the best of our knowledge. The output can vary from 20nA to 33nA for current reference and from 0.71V to 1.03V for voltage reference.

Keywords

CMOS integrated circuits; electric generators; programmable circuits; prosthetic power supplies; reference circuits; CMOS programmable monolithic reference generator; current 20 nA to 33 nA; power 120 nW; power line sensitivity; power supply variation; voltage 0.71 V to 3.5 V; wireless implantable system; CMOS integrated circuits; Current measurement; Generators; MOSFETs; Temperature distribution; Voltage control; Voltage measurement; Electrodes, Implanted; Models, Theoretical; Radio Waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE

Conference_Location

Boston, MA

ISSN

1557-170X

Print_ISBN

978-1-4244-4121-1

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2011.6090818

Filename

6090818