(1 PC) ML4401YCQ MICRO LINEAR IC Analog Circuit, PLCC-28

GENERAL DESCRIPTION

The ML4401 provides all of the analog circuitry necessary for

the demodulation of di-bit servo signal information in

Winchester disk drives. It interfaces to the servo head preamp

and provides quadrature position signal outputs for the servo

controller circuitry.

The ML4401 includesa high-performance 592-type input

amplifier and differential AGC circuit. External logic is designed to meet the needs of the particular servo system utilizing the VCO and Charge Pump to create a PLL time base for

Peak Detector gating. The SYNC output provides servo channel timing information for the logic.

The ML4401 when combined with the ML4402

ML4406/07/08 Servo Driver, the ML4403, ML4413 Servo

Controller and the ML4404 Trajectory Generator,

provides a flexible closed-loop servo control system.