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Content Provider | IEEE Xplore Digital Library |
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Author | Chih-Tien Chang Kow-Ming Chang Kun-Mou Chan |
Copyright Year | 2009 |
Description | Author affiliation: Department of Electronics Engineering, Institute of Electronics, National Chiao Tung University, Hsinchu, Taiwan 30050 (Chih-Tien Chang; Kow-Ming Chang; Kun-Mou Chan) |
Abstract | Solid state biosensors are a promising tool in biological applications because it is semiconductor technology producible and turns to be durable, small-size and low cost. Enzyme field-effective transistors (EnFETs) are typical ion-sensitive FET (ISFET) based biosensors, which immobilize enzyme on surface of gate dielectrics. Such biosensors require the readout circuits and stable reference systems for miniaturizing purpose. There are two combinations to achieve the purpose : one is the solid state reference electrode with a EnFET (SRE/EnFET) associated with a single ended readout circuit [1–2], the other is the metal electrode with an EnFET and a reference FET (QRE/EnFET/REFET) associated with two ended differential readout circuits [3–4]. Because of the concern of common mode signals, the electrical considerations for both combinations are different. For the first combination, design of readout circuits is simple if SRE provides stable potential. For the second combination, design of readout circuits is more complicated due to device match concerns. In this work, the sensor design characteristics and performances of the two combinations were studied. |
Starting Page | 1 |
Ending Page | 2 |
File Size | 252044 |
Page Count | 2 |
File Format | |
ISBN | 9781424460304 |
DOI | 10.1109/ISDRS.2009.5378064 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2009-12-09 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Biosensors Biomembranes Solid state circuits Biochemistry FETs Dielectrics Electrodes Conducting materials Transconductance Capacitance |
Content Type | Text |
Resource Type | Article |
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