Esd protection
AssigneeNXP B.V.
InventorsSiamak Delshadpour, Dolphin Abessolo Bidzo
Life of this patent
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Abstract
An integrated circuit (IC) is disclosed. The IC includes a pin to electrically connect the IC to an external circuit and a transistor that includes a base, a collector and an emitter. The pin is coupled to an internal circuit that is configured to operate in a preselected operating frequency range. The base is coupled to the pin and a resistor is coupled between the base and the pin. The IC further includes an electrostatic discharge (ESD) rail coupled to the pin through a first ESD diode. A second ESD diode is coupled between the floating ESD rail and a power supply to provide a second ESD current sink path.
Claims14
An integrated circuit (IC), comprising:
- a pin to electrically connect the IC to an external circuit, wherein the pin is coupled to an internal circuit that is configured to operate in a preselected minimum operating frequency range;
- a transistor including a base, a collector and an emitter, wherein the base is coupled with the pin;
- a resistor coupled between the base and the pin;
- a floating electrostatic discharge (ESD) rail coupled to the pin through a first ESD diode;
- and
- a second ESD diode coupled between the floating ESD rail and a power supply to provide a second ESD current sink path.
An integrated circuit (IC), comprising:
- a pin to electrically connect the IC to an external circuit, wherein the pin is coupled to an internal circuit that is configured to operate in a preselected minimum operating frequency range;
- a transistor including a base, a collector and an emitter, wherein the base is coupled with the pin;
- a resistor coupled between the base and the pin;
- a floating electrostatic discharge (ESD) rail coupled to the pin through a first ESD diode;
- a second ESD diode coupled between the floating ESD rail and a power supply to provide a second ESD current sink path;
- and
- a second ESD rail coupled to the second ESD diode, wherein the second floating ESD rail includes a diode coupled across terminals of the second ESD rail.
Dependencies are inferred from the claim text.