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ST ships preamplifier IC for mobile disk-drive apps

Posted: 30 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:stmicroelectronics? st? preamplifier ic? preamplifier chip? l6316?

STMicroelectronics (ST) announced the newest offering in its line of very low power preamplifier ICs for mobile disk-drive applications, as well as next generation 2.5-inch server drives.

According to the company, the new L6316 chip enables hard-disk drives (hdds) with higher data rates while offering a reduced demand on their power supplies, resulting in longer operation while running on batteries.

Designed to use ST's advanced silicon-germanium 5-metal-layer process, the IC offers uncompromised performance while requiring very low power and achieving read/write speeds in excess of 1.2Gbps under laptop power constraints, the press release said. The chip achieves this performance by using a new write-driver architecture, which ST has termed 'Continuously Matched' technology, assuring a true differential, fully matched impedance driver operating at all times during the write operation. In addition, the new driver architecture achieves the highest write voltages available, which ensures better data integrity (Bit Error Rate), boasted the company.

Offering flexibility and programmability, the new preamplifier allows development engineers to set write current, overshoot amplitude and duration independently of each other for optimization of write performance without compromise. Similarly, the device's continuously adjustable input impedance allows a perfect match to the impedance of the head interconnect during the read operation, ST said.

Gian Luca Bertino, GM of ST's Data Storage Division, commented, "This product can be used in mobile drives, which is the highest growth segment, and 7,200rpm 2.5-inch desktop and server drives. It covers a very large domain of applications, enabling a significant economy of scale resulting in a cost-effective solution for the hard disk drive market."

The L6316 preamplifier is priced at $1.75 in quantities of 1,000; however, the device is customized before going into high volume production with any client.

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