Document Detail

A compact nanopower low output impedance CMOS operational amplifier for wireless intraocular pressure recordings.
MedLine Citation:
PMID:  18003395     Owner:  NLM     Status:  MEDLINE    
Wireless sensing has shown potential benefits for the continuous-time measurement of physiological data. One such application is the recording of intraocular pressure (IOP) for patients with glaucoma. Ultra-low-power circuits facilitate the use of inductively-coupled power for implantable wireless systems. Compact circuit size is also desirable for implantable systems. As a first step towards the realization of such circuits, we have designed a compact, ultra-low-power operational amplifier which can be used to record IOP. This paper presents the measured results of a CMOS operational amplifier that can be incorporated with a wireless IOP monitoring system or other low-power application. It has a power consumption of 736 nW, chip area of 0.023 mm2, and output impedance of 69 Omega to drive low-impedance loads.
Russell P Dresher; Pedro P Irazoqui
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2007     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2007  
Date Detail:
Created Date:  2007-11-16     Completed Date:  2008-03-28     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  6056-9     Citation Subset:  IM    
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MeSH Terms
Amplifiers, Electronic*
Computer-Aided Design
Electric Impedance
Equipment Design
Equipment Failure Analysis
Intraocular Pressure / physiology*
Nanotechnology / instrumentation*,  methods
Reproducibility of Results
Sensitivity and Specificity
Telemetry / instrumentation*
Tonometry, Ocular / instrumentation*,  methods

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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