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Henry Sour Katzenstein (January 9, 1927 – January 10, 2003) was an American physicist and entrepreneur. He founded a company called Brooktree in 1983 to commercialize a new architecture for digital to analog converters that he developed.

The company name was taken from the street name where Dr. Katzenstein lived at the time he invented the then-novel circuit arrangement.

The company's first product

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