An analog DFE for disk drives using a mixed-signal integrator |
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| Authors: | Le MQ Hurst PJ Dyer KC |
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| Affiliation: | Dept. of Electr. & Comput. Eng., California Univ., Davis, CA; |
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| Abstract: | An analog adaptive decision-feedback equalizer (DFE) is described. The DFE cancels intersymbol interference using four feedback taps, and a fifth tap cancels dc offset. The coefficient for each tap is adapted using a small mixed-signal integrator. The DFE dissipates 220 mW at a data rate of 150 Mb/s. The active area is 1.8 mm2 in a 1-μm CMOS process |
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