SUBSTITUTE POWER OF ATTORNEY Pursuant to a written Limited Power of Attorney for Section 16 Reporting Obligations granted by each of the following individuals (collectively, the "Powers of Attorney"), copies of which were previously filed with the Securities and Exchange Commission, the undersigned has been constituted and appointed true and lawful attorney-in-fact and agent, with full powers of substitution and revocation, to do and perform every act and thing whatsoever requisite, necessary or proper to be done in the exercise of the rights and powers granted in such Powers of Attorney: James A. Champy Anantha P. Chandrakasan Martin Cotter Bruce R. Evans Edward H. Frank Laurie H. Glimcher Karen M. Golz Joseph Hassett Gregory N. Henderson Mark M. Little Prashanth Mahendra-Rajah Steve Pietkiewicz Vincent Roche Kenton J. Sicchitano Ray Stata The undersigned, pursuant to the powers granted in the Powers of Attorney, hereby constitutes and appoints Eric French as substitute to the undersigned attorney-in-fact, with full power and authority to do and perform every act and thing whatsoever requisite, necessary or proper to be done in the exercise of the rights and powers granted to the undersigned in the Powers of Attorney. For the avoidance of doubt, the foregoing appointment shall not serve as a revocation of the powers granted to the undersigned in the Powers of Attorney. This Substitute Power of Attorney shall remain in full force and effect with respect to each individual listed above, until the underlying Power of Attorney is revoked or terminated, unless earlier revoked by the undersigned in a signed writing. IN WITNESS WHEREOF, the undersigned has caused this Substitute Power of Attorney to be executed as of this 19th day of January, 2021. /s/ Margaret K. Seif Signature Margaret K. Seif Print Name \\\DC - 57385/2 - #1301253 v1 \\\DC - 57385/2 - #1301253 v1