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Agere preamps based on 0.25?m SiGe technology

Posted: 17 Jun 2003 ?? ?Print Version ?Bookmark and Share

Keywords:agere systems? truestore preamplifiers ic? silicon germanium? sige?

Agere Systems has released its PA7500 product family of TrueStore preamplifiers, which it claims is the industry's first 0.25?m SiGe-based preamp IC that targets storage desktop PC HDDs, laptops, servers, digital cameras, PDAs, and MP3 players.

The ICs offer low-power, cost-effective solutions for creating fast, accurate desktop and high-end storage devices with write speeds of 1.7Gbps. The preamplifiers also improve hard disk drive yields and extend the life of the drive head. As a drive "reads" a signal from the disk drive platter, the preamplifier is used to amplify small analog signals before they are sent to a read-channel IC for digitization. It also amplifies data from the read-channel for the drive head to "write" on the platter.

Providing a balanced writer, the product also protects the drive head from electrical voltage overstresses that typically occur in HDD systems during power mode transitions.

Engineering samples of the preamplifier are currently shipping to customers, with product quantities expected in the Q3.

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