ld3300-xx 2, 4, 6, 8, 10, 12, 14, and 16-channel programmable +5v, -3v, mr head preamplifier r version 3.0 description the ld3300-xx is one in the family of integrated circuit products designed for use with magneto- resistive recording heads. it is a register-based design to provide maximum programmability. these devices support 2, 4, 6, 8, 10 up to 16 channel mr head. it contains an mr low noise read amplifier, a thin film head write driver and interface/command control block which provides the ability to program the multiple operation modes, write currents and mr bias voltages as well as control diagnostic functions. this product family requires dual supply voltage of 5v, and -3v. these devices are available in tqfp, or flip chip. features programmable bandwidth from 150 to 360mhz write current rise/fall time = 2.0ns programmable read amplifier gain 150, 250, 300, 350 v/v through iccb (serial port) programmable thermal asperity threshold detection and correction mr head: differential voltage sense, voltage bias head unsafe, including read and write unsafe sensing interface/command control block (iccb) with shadow register servo write capability power supply fault protection programmable write current and mr bias voltage available in tqfp & flip chip block diagram write dac read dac head unsafe write current bias vref current generator por 0.40 multiplier read bias source mux write data serial port control address decoder head select mode select write register read register 6 channel r/w, mr bias write driver dummy head prog. gain post pre amplifier read amp interface/command control block wdy cn veer vee vdd vss hus rdx rdy cby1 cbx1 hrx0 hry0 hwx0 hwy0 hrx5 hry5 hwx5 hwy5 sdata sclk sden mrrn iwrn chen rref cby2 cbx2 wdx prog thermal asp. detc. & correction
ld3300-xx 2, 4, 6, 8, 10, 12, 14, and 16-channel programmable +5v, -3v, mr head preamplifier p age 19 version 3.0
|
