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A programmable intraocular CMOS pressure sensor system implant

: Stangel, K.; Kolnsberg, S.; Hammerschmidt, D.; Hosticka, B.J.; Trieu, H.-K.; Mokwa, W.


IEEE journal of solid-state circuits 36 (2001), No.7, pp.1094-1100
ISSN: 0018-9200
European Solid State Circuits Conference (ESSCIRC) <26, 2000, Stockholm>
Conference Paper
Fraunhofer IMS ()
pressure sensor; implant; intraocular pressure sensor; Augeninnendruck; transponder; implantierbares System

In this paper we present a programmable intraocular pressure sensor system implant integrated on a single CMOS chip. It contains on-chip micromechanical pressure sensor array, a temperature sensor, readout and calibration electronics, a µC-based digital control unit, and an RF-transponder. The transponder enables wireless data transmission and wireless power reception, thus making batteryless operation feasible. The chip has been fabricated in a 1.2 µm n-well CMOS process complemented by additional processing steps.