TI's wireless chief steps down

Gilles Delfassy, who helped make Texas Instruments the king of cell phone chips, is stepping down.

Delfassy, 51, has headed the company's wireless terminal unit since it was created in 1995. Since then, TI has become the dominant player in semiconductors for handsets. The company's main product is the digital signal processor, which fine tune the digital signals inside a handset and arguably act as the "brain" inside a phone. TI also makes microprocessors and other cell phone chips.

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