國立虎尾科技大學 |

A CMOS Analog Front-End IC for Gas Sensors.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	A CMOS Analog Front-End IC for Gas Sensors./
作者:	Kim, Hyun Tae.
面頁冊數:	204 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-06, Section: B, page: 3621.
Contained By:	Dissertation Abstracts International72-06B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	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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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.
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790 1 0 $a Thornton, Trevor $e committee member
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