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What can replace AD9100/AD9101 S/H amplifiers?

Hi all,

I need to design a DC restore circuitry for high-speed camera. Key requirement is a shortest acquisition time possible. For a certain reasons, I can't use integrated solutions like SHC615/OPA 615. These two chips in header seem to be ideal solution to me bu they both are no obsolete, Is there any good substitution, anywhere in the world?