6 / 4 Channel Voltage Sense Gmr Preamplifier

6 / 4 Channel Voltage Sense Gmr Preamplifier L6327 L6332 is a BICMOS monolithic integrated cir- cuit GMR differential preamplifier designed for use with four-terminal magneto-resistive GMR read/in- ductive write heads. It is available as either a six L6327 or four L6332 channel device. The devices consist of a voltage-sense, current-bias or voltage- bias (selectable), differential input and differential output, low-noise, high bandwidth read Amplifier and include fast current switching write drivers which sup- port data rates in excess of 550 Mb/s with 70nH write heads. The GMR preamplifier provides programmable read current / voltage bias and write current (5 bit DAC for the read bias, 5 bit DAC for the write current), fault detection circuitry and servo writing features. Read Amplifier gain, write current wave shape (overshoot, undershoot and damping) CAN be adjusted and a thermal asperity detection and correction circuit CAN be enabled and programmed with different thresh- olds (6 bit DAC) through a 16-bit bi-directional serial Interface (SDEN, SDATA, SCLK). The device oper- ates from a +5V supply and a -5V supply (nominal). No external components are required as a trimmed or untrimmed resistor for reference current setting is employed. By STMicroelectronics
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L6332




L6327 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
L6327 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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