Disk drive slider with sense amplifier for coupling to a preamp through a supply/bias line and a read signal line

摘要

A disk drive slider is disclosed comprising a first read element for generating a first read signal, and a first sense amplifier comprising a first input terminal coupled to the first read element, a first output terminal coupled to a first output line, and a first supply terminal coupled to a supply line. The first sense amplifier is for amplifying the first read signal to generate a first amplified read signal, the first output line is for transmitting the first amplified read signal to a preamp, and the supply line is for coupling to the preamp in order to supply power to the first sense amplifier and supply a first bias to the first read element.

主权项

1. A disk drive comprising:
a disk; a slider actuated over the disk, the slider comprising a first read element and a second read element; and control circuitry configured to:
calibrate a first bias supplied to the first read element;calibrate a second bias supplied to the second read element;generate an operating bias based on the first bias and the second bias; andapply the operating bias to the first read element and the second read element when reading data from the disk.