Title :
A 200-MSample/s trellis-coded PRML read/write channel with analog adaptive equalizer and digital servo
Author :
Alini, Roberto ; Betti, Giorgio ; Bietti, Ivan ; Bollati, Giacomino ; Brianti, Francesco ; Dati, Angelo ; Demicheli, Marco ; Gadducci, Paolo ; Marchese, Stefano ; Marconetti, Emanuele ; Pisati, Valerio ; Zuffada, Maurizio ; Castello, Rinaldo ; Heydari, Fe
Author_Institution :
SGS-Thomson Microelectron., Milan, Italy
Abstract :
A fully integrated partial response maximum likelihood (PRML) read/write IC with analog adaptive equalization operates up to 200 MSample/s. The chip implements both matched spectral null (MSN) trellis and standard PR4 Viterbi detectors in the digital domain as well as digital servo. The device is integrated in a mature 0.7-/spl mu/m BiCMOS technology, has a die size of 54 mm/sup 2/, and dissipates 2 W with MSN code or 1.5 W with PR4 code at 4.5-V supply and 200 MSample/s.
Keywords :
BiCMOS integrated circuits; Viterbi detection; adaptive equalisers; hard discs; maximum likelihood detection; mixed analogue-digital integrated circuits; partial response channels; servomechanisms; trellis codes; 0.7 micron; 1.5 W; 2 W; 4.5 V; BiCMOS technology; MSN code; PR4 Viterbi detectors; analog adaptive equalizer; die size; digital servo; hard disk drives; matched spectral null trellis; partial response maximum likelihood; trellis-coded PRML read/write channel; Adaptive equalizers; Analog integrated circuits; BiCMOS integrated circuits; Detectors; Digital integrated circuits; Digital signal processing chips; Maximum likelihood detection; Microelectronics; Servomechanisms; Viterbi algorithm;
Journal_Title :
Solid-State Circuits, IEEE Journal of
