Patent · US Active

Signal processing circuit comprising ion sensitive field effect transistor and method of monitoring a property of a fluid

US7649358B2 · kind B2 · utility

107Cited by

8References

8Claims

0Family size

Assignee

DNA Electronics, Inc. · GB

Inventors

Christofer Toumazou · London, GB
Bhusana Premanode · London, GB
Leila Shepherd · London, GB

Key dates

Filing date	Jun 22, 2005
Grant date	Jan 19, 2010
Priority date	—
Expiry date	Jul 4, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/0002
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A signal processing circuit includes an ion sensitive field effect transistor, a reference electrode for the ion sensitive field effect transistor, a metal oxide semiconductor transistor having its gate coupled to the reference electrode, and a biasing circuit. The biasing circuit is configured to bias the ion sensitive field effect transistor and the metal oxide semiconductor field effect transistor to operate in a weak inversion region and to provide an output current signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.