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RESEARCH PRODUCT
Novel constant current driver for ISFET/MEMFETs characterization
Antonio BaldiNatalia AbramovaA. Edith NavarroS. CasansJosé Pelegrı́D. Ramirezsubject
business.industryComputer scienceMetals and AlloysLow offsetElectrical engineeringCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsOperation pointlaw.inventionlawHardware_INTEGRATEDCIRCUITSMaterials ChemistryOperational amplifierConstant currentElectrical and Electronic EngineeringISFETResistorbusinessInstrumentationVoltagedescription
Abstract In the present work a new constant current driver for ISFETs and MEMFETs sensors has been developed. The proposed circuit maintains the ISFET/MEMFET operation point at constant drain–source current and voltage. The combination of some programmable current sources and an appropriate selection of a simple precision resistor allow a good ISFET/MEMFET polarization. The use of operational amplifiers with low offset and drift are required to provide the buffering function needed by the sensor.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-06-01 | Sensors and Actuators B: Chemical |