Patent ID: 6400520
Filing Date: 2002-06-04
Classification: G11B

Abstract:
A data storage system comprising:a plurality of data heads each providing a read signal indicative of data stored on one of a plurality of data storage surfaces; a plurality of preamplifiers each operatively coupled to and receiving the read signal from one of the plurality of data heads and providing as a preamplifier output an amplified read signal; a signal channel; and a connection device coupled to each of the plurality of preamplifiers, the connection device including detection circuitry operatively coupled to each of the plurality of preamplifiers, the detection circuitry detecting which of the plurality of preamplifiers is an active preamplifier, the connection device electrically coupling the amplified read signal from the active preamplifier to the signal channel while electrically isolating the others of the amplified read signals from the signal channel to thereby minimize parasitic capacitance on each of the plurality of preamplifiers.