Novel constant current driver for ISFET/MEMFETs characterization

Authors
Casans, S Navarro, AE Ramirez, D Pelegri, J Baldi, A Abramova, N
Citation
S. Casans et al., Novel constant current driver for ISFET/MEMFETs characterization, SENS ACTU-B, 76(1-3), 2001, pp. 629-633
Citations number
4
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
76
Issue
1-3
Year of publication
2001
Pages
629 - 633
Database
ISI
SICI code
0925-4005(20010601)76:1-3<629:NCCDFI>2.0.ZU;2-9
Abstract
In the present work a new constant current driver for ISFETs and MEMFETs se nsors has been developed. The proposed circuit maintains the ISFET/MEMFET o peration point at constant drain-source current and voltage. The combinatio n of some programmable current sources and an appropriate selection of a si mple precision resistor allow a good ISFET/MEMFET polarization. The use of operational amplifiers with low offset and drift are required to provide th e buffering function needed by the sensor. (C) 2001 Elsevier Science B.V. A ll rights reserved.