Abstract: Devices, systems and methods for uniquely identifying integrated circuits are provided. For at least one embodiment, an identifiable integrated circuit in a lot of integrated circuits includes a plurality of identifier devices. Each of the identifier devices, when tested, returns a series of first test results that form an analog identifier for the integrated circuit. For one embodiment, the identifier devices is a Zener diode. The test results may be based on reverse breakdown voltage measurements determined prior to packaging of the integrated circuit. Later testing of the integrated circuit returns a second series of reverse breakdown voltage measurements that monotonically vary over time and temperature, as compared to the first series of test results. Such monotonical variation facilitates correlation of the first series of test results with the second series of test results and, thereby, identification of the integrated circuit.

Abstract: Devices, systems and methods for uniquely identifying integrated circuits are provided. For at least one embodiment, an identifiable integrated circuit in a lot of integrated circuits includes a plurality of identifier devices. Each of the identifier devices, when tested, returns a series of first test results that form an analog identifier for the integrated circuit. For one embodiment, the identifier devices is a Zener diode. The test results may be based on reverse breakdown voltage measurements determined prior to packaging of the integrated circuit. Later testing of the integrated circuit returns a second series of reverse breakdown voltage measurements that monotonically vary over time and temperature, as compared to the first series of test results. Such monotonical variation facilitates correlation of the first series of test results with the second series of test results and, thereby, identification of the integrated circuit.

Abstract: Devices, systems and methods for uniquely identifying integrated circuits are provided. For at least one embodiment, a method for marking a given integrated circuit out of a plurality of integrated circuits, includes the operations of fabricating a plurality of identifier devices onto each integrated circuit of the plurality of integrated circuits; testing each of the plurality of identifier devices to obtain a test result for each identifier device; associating together each test result obtained for each identifier device fabricated onto each given integrated circuit to form an analog identifier for the given integrated circuit; and storing in a database each analog identifier for each of the plurality of integrated circuits. For at least one embodiment, a method for identifying an integrated circuit previously marked in an accordance with the present disclosure is provided. Articles of commerce marked using an embodiment of the present disclosure are also described.

Abstract: Devices, systems and methods for uniquely identifying integrated circuits are provided. For at least one embodiment, a method for marking a given integrated circuit out of a plurality of integrated circuits, includes the operations of fabricating a plurality of identifier devices onto each integrated circuit of the plurality of integrated circuits; testing each of the plurality of identifier devices to obtain a test result for each identifier device; associating together each test result obtained for each identifier device fabricated onto each given integrated circuit to form an analog identifier for the given integrated circuit; and storing in a database each analog identifier for each of the plurality of integrated circuits. For at least one embodiment, a method for identifying an integrated circuit previously marked in an accordance with the present disclosure is provided. Articles of commerce marked using an embodiment of the present disclosure are also described.