| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a processing system and a control using an ion-sensitive field-effect transistor. <P>SOLUTION: A signal processing circuit contains one or more ion-sensitive field-effect transistors, namely, ISFET, and a bias circuit for biasing them or each ion-sensitive field-effect transistor so as to operate in a weak inversion region. The method for using the ion-sensitive field-effect transistor to monitor properties of a medium includes the step of biasing the ion-sensitive field-effect transistor in a weak inversion region, exposing the ion-sensitive field-effect transistor to the medium, and analyzing the output of different ion-sensitive field-effect which depends on the properties. <P>COPYRIGHT: (C)2011,JPO&INPIT |
