Disk-drive ICs - Optimized for Read-channel and Servo Loop Control

Read channel: AD897 integrates peak detector, data synchronizer. Servo loop: Single-chip AD7774 provides multichannel analog I/O

Hard-drive head circuitry has two major analog paths: the head-positioning control-servo loop and the read/write signal path (called the read channel, because most of its circuitry is for recovery data from the disk). Two new monolithic IC chips are designed to meet these needs. Read full article