CLOCKED DOSIMETER COMPATIBLE WITH DIGITAL CMOS TECHNOLOGY

We present two versions of a radiation dosimeter, they are CMOS circui ts built around a PMOSFET radiation sensor, compatible with standard t echnology. These dosimeters are intended to be used as built-in sensor s in integrated circuits to signal misfunction danger due to radiation exposure, and so they have a binary output which changes its state wh en the total radiation dose exceeds a prefixed level. The first circui t is an improved version of a previously developed dosimeter which has less power consumption and sharper transfer characteristics. It has b een built in ES2 1.0 mu m technology and we present experimental resul ts. The second circuit is under development, it is a clocked dosimeter which samples the dose only during a very short time at each clock pe riod and then remains at rest, to further reduce the power consumption .