The LD3511-XX is a high performance BiCMOS, read/write preamplifier IC, designed for use with 4-terminal GMR recording heads. The device provides a low noise GMR head amplifier, DC bias current control for GMR head, 8V thin film write driver, write current control to the write current drivers, thermal asperity (TA) detection and correction. Fast recovery mode can be also programmed to put the chip faster in read mode from any other existing modes. The device is programmable for read gain, write overshoot and undershoot, fast recovery, GMR resistance measurement and thermal asperity threshold level. The device features multiple channel write. Half or all of the heads can be simultaneously selected in the servo write mode. Features and thresholds are controlled through a 3-line serial interface with readback. This product requires a 5V & 8V supplies. This device also provides PLR circuit, and on-chip temperature monitor function. This device is available in flip-chip or TSSOP 30 & 38-Pin packages.