SUNNYVALE, Calif.--Marvell Semiconductor Inc. here rolled out an advanced read channel IC for high-density disk drives with 1 dB gain in signal-to-noise ratio. The improved signal-to-noise ratio (SNR) results from an enhanced encoder/decoder design and the additional Noise-Predictive Viteri detector, said the company.
The SNR performance of the digital signal processor-based 88C4300 device allows data bits to be packed closer together on platters in hard-disk drives, said Alan J. Armstrong, vice president of marketing for Marvell's Mass Storage Division. "This provides tremendous advantages for manufacturers of mobile and desktop storage systems, where improved SNR, support for increased areal densities and low powerconsumption are paramount," he added.
The 88C4300 mixed-signal IC leverages Marvell's 88C4200 read-channel chip architecture, allowing the new chip to be dropped into existing system sockets.