Patent ID: 9275747
Filing Date: 2016-03-01
CPC Classification: G11C

Claim Text:
1. An integrated circuit, comprising: a sensing circuit with at least one sensing transistor including a gate, a drain, and a source; a comparator circuit including a first input terminal connected to a reference, a second input terminal connected to the source of the at least one sensing transistor through a pass gate, and an output providing an output signal; a controller coupled with the at least one sensing transistor and with the pass gate, the controller being operative in a first mode to turn the at least one sensing transistor on and to turn the pass gate off, and the controller being operative in a second mode to turn the at least one sensing transistor off and to turn the pass gate on; and a deactivation circuit receiving the output signal from the comparator circuit and operative to selectively disable operation of a user circuit of the integrated circuit responsive to the output signal from the comparator circuit indicating that a total ionizing dose experienced by the integrated circuit is greater than or equal to a threshold value.