An integrated circuit includes a first clock island, a second clock island, a clock generator, and a first programmable delay element. The device utilizes a scavenging zone that contains a capture reagent for the analyte of interest. The lens satisfies the condition: Fomula, where t is the thickness of the lens, FWD is the free working distance between the lens and the carrier, where t, td and FWD are expressed in millimeters, and where FWD+tdnd<0. Movement of the accelerometer causes the capacitive elements to produce a signal proportional to the movement acceleration and not by temperature changes experienced by the accelerometer.