Abstract:
A circuit includes a first PMOS transistor that includes a first PMOS source coupled to a first input node, a first PMOS gate, and a first PMOS drain. A second PMOS transistor includes a second PMOS source coupled to a second input node, a second PMOS gate, and a second PMOS drain coupled to the second PMOS gate. A first resistor coupled between the first PMOS source and a ground node. A first diode element coupled between the first resistor and the ground node and a second diode element coupled between the second PMOS source and the ground node. A third PMOS transistor includes a third PMOS gate, a third PMOS source coupled to a supply node, and a third PMOS drain coupled to the first input node. A fourth PMOS transistor includes a fourth PMOS gate coupled to the third PMOS gate, a fourth PMOS source coupled to the supply node, and a fourth PMOS drain coupled to the second input node.
Abstract:
A device for detecting a laser attack made on an integrated circuit chip comprises a bipolar transistor of a first type formed in a semiconductor substrate, that bipolar transistor comprising a parasitic bipolar transistor of a second type. A buried region, forming the base of the parasitic bipolar transistor, operates as a detector of the variations in current flowing caused by impingement of laser light on the substrate.
Abstract:
The regulator with a low dropout voltage comprises an error amplifier comprising a differential pair of input transistors and a circuit with folded cascode structure connected to the output of the said differential pair, an output stage connected to the output node of the error amplifier, and a Miller compensation capacitor connected between the output stage and the cascode node on the output side (XP) of the cascode circuit; the error amplifier furthermore comprises at least one inverting amplifier module in a feedback loop between the said cascode node and the gate of the cascode transistor of the cascode circuit connected between the said cascode node and the said output node.
Abstract:
A device for detecting a laser attack made on an integrated circuit chip comprises a bipolar transistor of a first type formed in a semiconductor substrate, that bipolar transistor comprising a parasitic bipolar transistor of a second type. A buried region, forming the base of the parasitic bipolar transistor, operates as a detector of the variations in current flowing caused by impingement of laser light on the substrate.
Abstract:
An electronic circuit includes a functional circuit in series with at least one first current source between two terminals of application of a power supply voltage. The first current source is controllable between an operating mode where it delivers a fixed current, independent from the power consumption of said functional circuit, and an operating mode where it delivers a variable current, depending on the power consumption of the functional circuit.
Abstract:
A device for detecting a laser attack in an integrated circuit chip formed in the upper P-type portion of a semiconductor substrate incorporating an NPN bipolar transistor having an N-type buried layer, including a detector of the variations of the current flowing between the base of said NPN bipolar transistor and the substrate.