Advanced micro devices, inc. (20250006722). INTEGRATED CIRCUIT LOW CAPACITANCE ELECTROSTATIC DISCHARGE DIODES

INTEGRATED CIRCUIT LOW CAPACITANCE ELECTROSTATIC DISCHARGE DIODES

Organization Name

advanced micro devices, inc.

Inventor(s)

Ravi Kumar Kallempudi of Bengaluru IN

Robert Scott Ruth of Fort Collins CO US

Suhas Shivaram of Bengaluru IN

INTEGRATED CIRCUIT LOW CAPACITANCE ELECTROSTATIC DISCHARGE DIODES

This abstract first appeared for US patent application 20250006722 titled 'INTEGRATED CIRCUIT LOW CAPACITANCE ELECTROSTATIC DISCHARGE DIODES

Original Abstract Submitted

a semiconductor electrostatic discharge (esd) protection circuit comprises an n diode for limiting negative going voltages with reference to ground (v) and a p diode for limiting positive going voltages with reference to a positive supply voltage (v). the n-diode is formed in a single p-well surrounded by an n-well ring. the p-diode is formed in a single n-well surrounded by a p-well ring. the n-diode comprises a plurality of n+ fingers, each n+ finger is surrounded by a p+ guard ring. the p-diode comprises a plurality of p+ fingers, each p+ finger surrounded by an n+ guard ring. the plurality of n+ fingers and p+ fingers are coupled to an input-output pad. the p+ guard rings are coupled to ground (v) and the n+ guard rings are coupled to the positive supply voltage (v).