Please wait, while we are loading the content...
Please wait, while we are loading the content...
Content Provider | IEEE Xplore Digital Library |
---|---|
Author | Carvalho, J. Oliveira, L.B. Oliveira, J.P. Goes, J. Silva, M.M. |
Copyright Year | 2012 |
Description | Author affiliation: CTS-UNINOVA and Faculty of Sciences and Technology (FCT), Universidade Nova de Lisboa (UNL), Campus de Caparica, Portugal (Carvalho, J.; Oliveira, L.B.; Oliveira, J.P.; Goes, J.) || INESC-ID, Technical University of Lisbon, Portugal (Silva, M.M.) |
Abstract | The oxygen level in blood, usually referred as SPO2 (Saturation of hemoglobin with oxygen as measured by pulseoximetry) is an essential medical information. Measuring the oxygen level of the human blood using non-intrusive techniques is a vital achievement in modern medicine. This can be performed by processing the infrared and red light transmitted by the patient's finger and received by a photoreceptor. Before being applied to an analog-to-digital converter (ADC), the incoming light has to be converted to a voltage and the range should be dynamically adjusted in order to use always the full input range of the ADC. Since the photoreceptor generates an output current, a transimpedance amplifier (TIA) with gain control is required. The two-stage TIA proposed in this paper, uses a regulated common-gate in first stage employing noise cancellation and balun operation using an additional CS stage, while the adjustable gain is implemented in the second-stage, which is based on an intrinsically noiseless MOS parametric amplifier (MPA). This MPA operates in the discrete-time domain, thus eliminating the need of an input sample-and-hold (S/H) block in the ADC. The proposed circuit has been designed in a 130 nm digital 1.2 V CMOS technology. The electrical simulations show that the overall power consumption is lower than 250 µ W and input referred noise power density is extremely low. |
Starting Page | 178 |
Ending Page | 182 |
File Size | 581189 |
Page Count | 5 |
File Format | |
ISBN | 9781457720925 |
e-ISBN | 9788393207589 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2012-05-24 |
Publisher Place | Poland |
Access Restriction | Subscribed |
Rights Holder | Dept of Microelectronics |
Subject Keyword | oximeter noise cancelation Logic gates Capacitance Noise cancellation CMOS integrated circuits Transimpedance amplifier (TIA) Photodiodes Blood |
Content Type | Text |
Resource Type | Article |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
Sl. | Authority | Responsibilities | Communication Details |
---|---|---|---|
1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
Loading...
|