FIELD: chemistry.SUBSTANCE: invention relates to analytical chemistry. Integrated circuit (100) sensor array, comprising semiconductor substrate (110); insulating layer (120) over said substrate; first transistor (140a) on said insulating layer, the first transistor comprising exposed functionalised channel region (146a) in between source region (142a) and drain region (144) for sensing an analyte in a medium; second transistor (140b) on said insulating layer, the second transistor comprising exposed channel region (146b) in between source region (142b) and drain region (144) for sensing a potential of said medium; and voltage bias generator (150) conductively coupled to the semiconductor substrate for providing said transistors with a bias voltage, said voltage bias generator being responsive to the second transistor. Sensing apparatus comprising such an IC and an analyte measurement method using such an IC are also disclosed.EFFECT: invention provides for the formation of a sensing apparatus with a simple d
