Qualcomm Incorporated

Baldeo Sharan Sharma

David Anthony Kidd

Rui Li

Venkat Narayanan

De Lu

Min Chen

Samy Shafik Tawfik Zaynoun

Saravanan Marimuthu

Peeyush Kumar Parkar

Amit Patil

Aspects of the disclosure are directed to sensing integrated circuit (IC) Back End Of Line (BEOL) process corners. In one aspect, an apparatus for sensing IC BEOL process corners includes a ring oscillator including a plurality of ring oscillator stages configured to generate an output waveform with a frequency state; and a shield net circuit including a plurality of shield net stages corresponding to the plurality of ring oscillator stages, the shield net circuit having a toggle input. And, a method includes generating an output waveform with a frequency state using a ring oscillator that includes a plurality of ring oscillator stages; modifying a plurality of ring oscillator stage time delays through a coupling between a plurality of shield net stages and the plurality of ring oscillator stages; and selecting the frequency state using a toggle input of a shield net circuit which includes the plurality of shield net stages.

Back end of line (BEOL) process corner sensing

Growing community of inventors

Bengaluru, India

Baldeo Sharan Sharma