Integration of filter into read/write preamplifier integrated circuit

A magnetic media storage system for storing and retrieving data, comprising:

• a. a magnetic medium on which data is stored and from which data is retrieved;
• b. a read/write head configured for writing data on the magnetic medium and reading data from the magnetic medium;
• c. a single serial filtering path including a pre-filter circuit configured for receiving a signal read by the read/write head from the magnetic medium for filtering the signal and then providing a single filtered output signal for transmission to a read channel including a read channel filter circuit;
• and
• d. an amplifier circuit coupled to the pre-filter circuit for amplifying the single filtered output signal and providing an amplified and filtered output signal for transmission to the read channel.

A system for storing and retrieving data, comprising:

• a. a hard disk drive including:
• i. a magnetic medium on which data is stored and from which data is retrieved;
• ii. a read/write head configured for writing data on the magnetic medium and reading data from the magnetic medium;
• and
• iii. a single serial filtering path including a pre-filter circuit configured for receiving a signal read by the read/write head from the magnetic medium for filtering the signal and providing a first filtered output signal;
• b. a read channel configured for receiving the first filtered output signal including:
• i. a read channel amplifier circuit for amplifying the first filtered output signal and providing an amplified signal;
• ii. a read channel filter circuit coupled to the read channel amplifier circuit for filtering the amplified signal and providing an amplified/filtered signal;
• iii. a peak detection circuit coupled to the read channel filter circuit for detecting peaks in the amplified/filtered signal and providing an output signal representing data read from the magnetic medium within the hard disk drive;
• and
• c. a transmission cable coupled between the hard disk drive and the read channel for providing the first filtered output signal to the read channel.