Measuring cell and measuring field comprising measuring cells of this type, use of a measuring and use of a measuring field

US7084641B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Ralf Brederlow · Poing, DE
• Bjorn-Oliver Eversmann · Munich, DE
• Ivo Koren · Hersbruck, DE
• Christian Paulus · Weilheim, DE
• Roland Thewes · Puchheim, DE

Key dates

• Filing date: Jan 9, 2004
• Grant date: Aug 1, 2006
• Expiry date: Jan 9, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/48728
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measuring cell for recording an electrical potential of an analyte situated on the measuring cell. The measuring cell has a sensor, a layer arranged above the sensor and electrically insulating the analyte from the sensor, and an amplifier circuit connected to the sensor on a substrate and having an input stage containing a field-effect transistor or a bipolar transistor, the sensor being at least indirectly connected to a control terminal of the field-effect transistor or of the bipolar transistor. An operating point of the amplifier circuit is set by means of a voltage or a current applied at the control terminal of the field-effect transistor or of the bipolar transistor of the input stage of the amplifier circuit.