國立虎尾科技大學 |

A CMOS Analog Front-End IC for Gas Sensors.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	A CMOS Analog Front-End IC for Gas Sensors./
Author:	Kim, Hyun Tae.
Description:	204 p.
Notes:	Source: Dissertation Abstracts International, Volume: 72-06, Section: B, page: 3621.
Contained By:	Dissertation Abstracts International72-06B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3449953
ISBN:	9781124579214

A CMOS Analog Front-End IC for Gas Sensors.
Kim, Hyun Tae.

A CMOS Analog Front-End IC for Gas Sensors. - 204 p.

Source: Dissertation Abstracts International, Volume: 72-06, Section: B, page: 3621.

Thesis (Ph.D.)--Arizona State University, 2011.

This thesis presents a gas sensor readout IC for amperometric and conductometric electrochemical sensors. The Analog Front-End (AFE) readout circuit enables tracking long term exposure to hazardous gas fumes in diesel and gasoline equipments, which may be correlated to diseases. Thus, the detection and discrimination of gases using microelectronic gas sensor system is required. This thesis describes the research, development, implementation and test of a small and portable based prototype platform for chemical gas sensors to enable a low-power and low noise gas detection system. The AFE reads out the outputs of eight conductometric sensor array and eight amperometric sensor arrays. The IC consists of a low noise potentiostat, and associated 9bit current-steering DAC for sensor stimulus, followed by the first order nested chopped SigmaDelta ADC. The conductometric sensor uses a current driven approach for extracting conductance of the sensor depending on gas concentration. The amperometric sensor uses a potentiostat to apply constant voltage to the sensors and an I/V converter to measure current out of the sensor. The core area for the AFE is 2.65x0.95 mm2. The proposed system achieves 91 dB SNR at 1.32 mW quiescent power consumption per channel. With digital offset storage and nested chopping, the readout chain achieves 500 muV input referred offset.

ISBN: 9781124579214Subjects--Topical Terms:

845382
Engineering, Electronics and Electrical.

A CMOS Analog Front-End IC for Gas Sensors.
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100 1 $a Kim, Hyun Tae. $3 845388
245 1 2 $a A CMOS Analog Front-End IC for Gas Sensors.
300 $a 204 p.
500 $a Source: Dissertation Abstracts International, Volume: 72-06, Section: B, page: 3621.
500 $a Adviser: Bertan Bakkaloglu.
502 $a Thesis (Ph.D.)--Arizona State University, 2011.
520 $a This thesis presents a gas sensor readout IC for amperometric and conductometric electrochemical sensors. The Analog Front-End (AFE) readout circuit enables tracking long term exposure to hazardous gas fumes in diesel and gasoline equipments, which may be correlated to diseases. Thus, the detection and discrimination of gases using microelectronic gas sensor system is required. This thesis describes the research, development, implementation and test of a small and portable based prototype platform for chemical gas sensors to enable a low-power and low noise gas detection system. The AFE reads out the outputs of eight conductometric sensor array and eight amperometric sensor arrays. The IC consists of a low noise potentiostat, and associated 9bit current-steering DAC for sensor stimulus, followed by the first order nested chopped SigmaDelta ADC. The conductometric sensor uses a current driven approach for extracting conductance of the sensor depending on gas concentration. The amperometric sensor uses a potentiostat to apply constant voltage to the sensors and an I/V converter to measure current out of the sensor. The core area for the AFE is 2.65x0.95 mm2. The proposed system achieves 91 dB SNR at 1.32 mW quiescent power consumption per channel. With digital offset storage and nested chopping, the readout chain achieves 500 muV input referred offset.
590 $a School code: 0010.
650 4 $a Engineering, Electronics and Electrical. $3 845382
690 $a 0544
710 2 $a Arizona State University. $b Electrical Engineering. $3 845389
773 0 $t Dissertation Abstracts International $g 72-06B.
790 1 0 $a Bakkaloglu, Bertan, $e advisor
790 1 0 $a Vermeire, Bert $e committee member
790 1 0 $a Spanias, Andreas $e committee member
790 1 0 $a Thornton, Trevor $e committee member
790 $a 0010
791 $a Ph.D.
792 $a 2011
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3449953